HOT NEWS GOLD MINING

Showing posts with label GOLD PROCESSING. Show all posts
Showing posts with label GOLD PROCESSING. Show all posts

Gold refining with aqua regia by machine, after the raw material is impure gold is melted in an induction furnace the form of grains or flakes to be fed to the Aqua region reactor. The Aqua region refining plant comprises of steps mix acid that is aqua reaction as the first step we're an impure alloy is dissolved.

Steam or heating issues as a step to enhance reaction and ensure good efficiency. this aqua region reactor is connected to a fume scrubber which takes care of neutralizing toxic fumes of acid mainly knocks generated due to nitric acid and also hydrochloric acid vapors.

Silver gets converted to white silver chloride crystals which are filtered in the silver chloride filter and once it is ensured that entire silver chloride is filtered.

Then the silver chloride crystals from the filter are collected and accumulated, these are then cemented in silver semen tation unit where it is reduced by a mixture of sodium hydroxide and glucose. The cemented silver is filtered casted into a node bar and is refined to pure silver of 999 quality an electrolytic silver refining setup.

The liquids after filtration of silver from electrolytic refining plant are also collected in liquid storage tanks. Clear gold chloride solution is transferred to another reactor where sodium metabisulfite is charged in as a reducing agent,  then this will precipitate gold from the solution, this is monitored by good pH control and viewing glass reactor for the right change in color.

The cemented gold is then filtered in the gold filter until it is ensured that entire gold is collected this wet gold is 99.5 quality and the liquids left out are transferred to exhaust liquid storage tanks.

Pure gold of 99.5 quality filtered from aqua region refining plant if it needs to be further purified should pass through the process of electrolytic gold refining in order to get 999.9 purity.

All the exhaust liquids are collected in storage tanks are passed through three tanks by overflow systems and then primarily in the first stage copper is cemented which is filtered and collected for further refining. The liquids after copper sementation are treated with alkali solution mixture of calcium and sodium hydroxide. These metallic hydroxy Tsar sedimented which are filtered in a filter press and then after clear water is discharged to drain.

The pure gold sand of 99.5 generated from the Aqua region process is first dried in an oven or it can be pure gold of 99.9 from electrolytic process. This gold is then melted in an induction furnace where after it follows the process depending on the configuration of gold bar desired, for gold bars up to 100 GMS configuration the molten gold is collected in a pre-designed mold for the desired configuration and strips, these gold strips are then passed through the rolling mill where the rollers are set to get the right thickness of the strip's getting converted two sheets.

These sheets are then passed through the cutting press with set of punching so that gold blocks are cut as desired these gold blocks are then annealed to remove oxide by a flame and then cooled and cleaned.

For gold bars above 100 GMS up to killobar configuration. The molten gold is collected in a pre-designed mold for the desired configuration. This is then cooled in the cooling table where bar is formed. A burner flame is used in order that oxides are not formed this is mainly a kneeling step and then the gold bar is cleaned.

Videos Gold Refining With Aqua Regia By Machine


See Also

Videos Gold Refining With Aqua Regia By Machine


Gold refining with aqua regia by machine, after the raw material is impure gold is melted in an induction furnace the form of grains or flakes to be fed to the Aqua region reactor. The Aqua region refining plant comprises of steps mix acid that is aqua reaction as the first step we're an impure alloy is dissolved.

Steam or heating issues as a step to enhance reaction and ensure good efficiency. this aqua region reactor is connected to a fume scrubber which takes care of neutralizing toxic fumes of acid mainly knocks generated due to nitric acid and also hydrochloric acid vapors.

Silver gets converted to white silver chloride crystals which are filtered in the silver chloride filter and once it is ensured that entire silver chloride is filtered.

Then the silver chloride crystals from the filter are collected and accumulated, these are then cemented in silver semen tation unit where it is reduced by a mixture of sodium hydroxide and glucose. The cemented silver is filtered casted into a node bar and is refined to pure silver of 999 quality an electrolytic silver refining setup.

The liquids after filtration of silver from electrolytic refining plant are also collected in liquid storage tanks. Clear gold chloride solution is transferred to another reactor where sodium metabisulfite is charged in as a reducing agent,  then this will precipitate gold from the solution, this is monitored by good pH control and viewing glass reactor for the right change in color.

The cemented gold is then filtered in the gold filter until it is ensured that entire gold is collected this wet gold is 99.5 quality and the liquids left out are transferred to exhaust liquid storage tanks.

Pure gold of 99.5 quality filtered from aqua region refining plant if it needs to be further purified should pass through the process of electrolytic gold refining in order to get 999.9 purity.

All the exhaust liquids are collected in storage tanks are passed through three tanks by overflow systems and then primarily in the first stage copper is cemented which is filtered and collected for further refining. The liquids after copper sementation are treated with alkali solution mixture of calcium and sodium hydroxide. These metallic hydroxy Tsar sedimented which are filtered in a filter press and then after clear water is discharged to drain.

The pure gold sand of 99.5 generated from the Aqua region process is first dried in an oven or it can be pure gold of 99.9 from electrolytic process. This gold is then melted in an induction furnace where after it follows the process depending on the configuration of gold bar desired, for gold bars up to 100 GMS configuration the molten gold is collected in a pre-designed mold for the desired configuration and strips, these gold strips are then passed through the rolling mill where the rollers are set to get the right thickness of the strip's getting converted two sheets.

These sheets are then passed through the cutting press with set of punching so that gold blocks are cut as desired these gold blocks are then annealed to remove oxide by a flame and then cooled and cleaned.

For gold bars above 100 GMS up to killobar configuration. The molten gold is collected in a pre-designed mold for the desired configuration. This is then cooled in the cooling table where bar is formed. A burner flame is used in order that oxides are not formed this is mainly a kneeling step and then the gold bar is cleaned.

Videos Gold Refining With Aqua Regia By Machine


See Also


Gold is the softest and most malleable, metal it can be pressed extremely thin crafted into various shapes even drawn out to form a fine wire. Gold isn't affected by water or oxygen as many metals are so it doesn't rust. Most gold comes from low deposits also called bein deposits concentrations of gold and other metals in the cracks of rocks. Low deposits require hard rock mining, the process of removing gold-bearing rock called or by drilling and blasting

Miners to send more than half kilometer underground there they drill holes for explosives using what's called a long whole air drill. They drill in a specific pattern set out in a plan prepared by the mines engineers. The engineers know exactly where those veins of gold are thanks to the mining companies geologists who studied or samples.

The company collects these samples by drilling deep into the rock at 50-meter intervals. These diamond drill cores as they're called are up to 100 meters long and measure three point five centimeters in diameter.

Gold in its natural state isn't cure it's usually intertwined with silver and other metals, so the mind or has to be processed afterward to isolate and extract the gold. A metric ton of ore yields only about six point five grams of gold. After blasting the rock apart with explosives or miners use what's called a mock machine to transfer the or two cars headed to the main shaft and then above ground to the mill. There a crusher reduces the large chunks into smaller rocks about the size of gravel a mil then processed into a pulp

The factory adds a water and cyanide solution than another mill and flows into large settling tanks. The wet solids being heavier sinks to the bottom, the water the top drains to another area. They transfer the solids to an agitation tank and blowing air the oxygen steps off a chemical reaction between the cyanide and the goal triggering the gold to dissolve and leach into the surrounding water.  

Drum filters then separate the water from the solids. This water now joins the water that was separated earlier they pour in zinc powder to solidify the dissolve gold and four pieces containing both zink and gold. To smelt it into bars they first have to mix several chemicals, manganese dioxide, flew right, silica flower, borax and sodium nitrate. 

This chemical mix called flux will separate the gold from the impurities. Into the smelter whose temperature is a fiery 1,600 degrees Celsius. The rotate smelters so that the contents heat evenly, over two and a half hours the heavier gold eventually sinks to the bottom while the impurities called slag float to the surface.  They pour out the slag taking a sample to make sure it contains gold or no.

The gold cooled slightly so they reheat - 1600 degrees celsius, then cast into bar-shaped molds. The gold takes about four minutes to harden, and then another hour to cool completely in a basin of cold water. Then bullion cleaned of dirt remaining combustion. Gold bars or ingots, this stage the gold is eighty percent pure.

Video Process Basics How Gold Is Made In The Mining 


Video Process Basics How Gold Is Made In The Mining


Gold is the softest and most malleable, metal it can be pressed extremely thin crafted into various shapes even drawn out to form a fine wire. Gold isn't affected by water or oxygen as many metals are so it doesn't rust. Most gold comes from low deposits also called bein deposits concentrations of gold and other metals in the cracks of rocks. Low deposits require hard rock mining, the process of removing gold-bearing rock called or by drilling and blasting

Miners to send more than half kilometer underground there they drill holes for explosives using what's called a long whole air drill. They drill in a specific pattern set out in a plan prepared by the mines engineers. The engineers know exactly where those veins of gold are thanks to the mining companies geologists who studied or samples.

The company collects these samples by drilling deep into the rock at 50-meter intervals. These diamond drill cores as they're called are up to 100 meters long and measure three point five centimeters in diameter.

Gold in its natural state isn't cure it's usually intertwined with silver and other metals, so the mind or has to be processed afterward to isolate and extract the gold. A metric ton of ore yields only about six point five grams of gold. After blasting the rock apart with explosives or miners use what's called a mock machine to transfer the or two cars headed to the main shaft and then above ground to the mill. There a crusher reduces the large chunks into smaller rocks about the size of gravel a mil then processed into a pulp

The factory adds a water and cyanide solution than another mill and flows into large settling tanks. The wet solids being heavier sinks to the bottom, the water the top drains to another area. They transfer the solids to an agitation tank and blowing air the oxygen steps off a chemical reaction between the cyanide and the goal triggering the gold to dissolve and leach into the surrounding water.  

Drum filters then separate the water from the solids. This water now joins the water that was separated earlier they pour in zinc powder to solidify the dissolve gold and four pieces containing both zink and gold. To smelt it into bars they first have to mix several chemicals, manganese dioxide, flew right, silica flower, borax and sodium nitrate. 

This chemical mix called flux will separate the gold from the impurities. Into the smelter whose temperature is a fiery 1,600 degrees Celsius. The rotate smelters so that the contents heat evenly, over two and a half hours the heavier gold eventually sinks to the bottom while the impurities called slag float to the surface.  They pour out the slag taking a sample to make sure it contains gold or no.

The gold cooled slightly so they reheat - 1600 degrees celsius, then cast into bar-shaped molds. The gold takes about four minutes to harden, and then another hour to cool completely in a basin of cold water. Then bullion cleaned of dirt remaining combustion. Gold bars or ingots, this stage the gold is eighty percent pure.

Video Process Basics How Gold Is Made In The Mining 




Test process drilling for gold is an important step in the every prospecting and gold mining industry. Test drilling is a step that is used continuously to obtain samples of bedrock in the land of gold mining project. The sample is then tested to determine whether it is gold in the project area in mining and to estimate the amount of gold that can be mined in the area. 

In the process of drilling testing can produce a variety of results sample, because each gap can occur various kinds of different types of rocks and soils, The process of drilling test is a step that most highly effective to get the test results of rock in the ground in estimating the amount of gold ore deposits in the area which will do the mining.

Drilling is an absolute necessity to assess metal ores prior to the process of exploitation in an extensive mining operation. Drilling can be done for all large-scale mining, before the open pit mine development, or for the assessment of large commercial placer mines. 

Preliminary Prospecting Works In Test Drilling

Before test drilling for gold, there are several steps that can be done early, it is made to prospecting works. Often the area to test can bushes, hard terrain or other obstacles drilled, which may influence the outcome of exploratory drilling. It is important, therefore, it will be handled first.

One step that can be used is by ridding the area which will be conducted test drilling. This can help reduce the amount of land the ground which will done testing on drilling,thus support and make to be effective the test holes are drilled. 

Drill testing

In the process of test drilling in gold mining is intended to determine whether the area has gold potential which can be used for large-scale mining.This is very helpful in determining the amount of gold deposits
and grade gold contained in the soil in the area that will be in mine.

Test drilling can also specify the information that is significant of the general geology of the rock structures that exist in the soil at the prospect area, the geochemical structure and other information from other minerals besides gold deposits existing in the test drilling area 

The pattern of test holes, the distance and the number of test wells is mineral determined by the geometrical alignment of the drill, the geochemical composition of the area and the distribution of the target.

For most in scale test drilling in mining area is often gridded out into small grids that can determine the number of holes to be drilled. Sometimes in the drilling process is done in a manner soil formation such as rifts, ditches, river basins or even valleys. 

In most of the tests for the drilling of gold speed and cost are important factors that are considered by geologists.

If in the process the first step is successful, then to get a drilling method that is more accurate in determining the mineral content of gold or may be in the process of the most extensive can be implemented

Some of the methods most commonly used test holes, you can use includes hand drilling, rotary drilling, percussion drilling and diamond drilling. 

The significance of the test drilling for gold

test drilling is to enhance the importance of prospecting before a mining operation, and drill testing is one of the methods most commonly used for sampling.

Albeit with very expensive, it takes some of the risk and guesswork out of the mining process and an estimate of how much gold there is in the area

The type of drilling specifies the device to be used. 

Hand Drilling

This is carried out in at a little place for little operations. Hand drilling done by using a manual hand, the phase required prior training stage, as sample tubes and augers. These drills can not penetrate bedrock and thus limited in its application entirely.

Variety of hand drilling tools can be used for hand drilling, but hand test can only for little gold mining drilling.The advantage of the hard drilling reduced cost of major methods, and this may be the best method for individual miners who lack the resources for greater exploration.

 Percussion Drilling

This type test drilling where the drilling equipment can be used to enter into the bedrock up to a depth of approximately 10 meters. Percussion drilling is drilling that uses compressed air drilling equipment, this makes lebihh far stronger than using a hand drill.There is also drilling using large air drilling equipment ,which can be used in complex drilling in the mining area.

Rotary Drilling

Rotary drilling is drilling relatively expensive yet very easy to use in a variety of conditions. In the drilling process using a ring and an air compressor in the process of drilling holes to be tested. With the true tools and skilled workers, this type of exploratory drilling takes the least time of all available drills. The drill may obtain samples from between 20 and 100 foot holes. 

Diamond Drilling

This is the most versatile drill testing method that can use. The machines used for this type of drilling gets superior most samples since it can drill deep and at a certain angle and conditions.

In most cases, drills are used herein, can be powered by electric engines, gasoline, diesel, and even air. However, the process can only slow and very expensive in practice and thus it is used only for complex projects that require extensive drilling.

This Video  from Hellix Ventures Inc. - Margarita Gold Drill Program

Drill Testing To Sample Gold Deposits


Test process drilling for gold is an important step in the every prospecting and gold mining industry. Test drilling is a step that is used continuously to obtain samples of bedrock in the land of gold mining project. The sample is then tested to determine whether it is gold in the project area in mining and to estimate the amount of gold that can be mined in the area. 

In the process of drilling testing can produce a variety of results sample, because each gap can occur various kinds of different types of rocks and soils, The process of drilling test is a step that most highly effective to get the test results of rock in the ground in estimating the amount of gold ore deposits in the area which will do the mining.

Drilling is an absolute necessity to assess metal ores prior to the process of exploitation in an extensive mining operation. Drilling can be done for all large-scale mining, before the open pit mine development, or for the assessment of large commercial placer mines. 

Preliminary Prospecting Works In Test Drilling

Before test drilling for gold, there are several steps that can be done early, it is made to prospecting works. Often the area to test can bushes, hard terrain or other obstacles drilled, which may influence the outcome of exploratory drilling. It is important, therefore, it will be handled first.

One step that can be used is by ridding the area which will be conducted test drilling. This can help reduce the amount of land the ground which will done testing on drilling,thus support and make to be effective the test holes are drilled. 

Drill testing

In the process of test drilling in gold mining is intended to determine whether the area has gold potential which can be used for large-scale mining.This is very helpful in determining the amount of gold deposits
and grade gold contained in the soil in the area that will be in mine.

Test drilling can also specify the information that is significant of the general geology of the rock structures that exist in the soil at the prospect area, the geochemical structure and other information from other minerals besides gold deposits existing in the test drilling area 

The pattern of test holes, the distance and the number of test wells is mineral determined by the geometrical alignment of the drill, the geochemical composition of the area and the distribution of the target.

For most in scale test drilling in mining area is often gridded out into small grids that can determine the number of holes to be drilled. Sometimes in the drilling process is done in a manner soil formation such as rifts, ditches, river basins or even valleys. 

In most of the tests for the drilling of gold speed and cost are important factors that are considered by geologists.

If in the process the first step is successful, then to get a drilling method that is more accurate in determining the mineral content of gold or may be in the process of the most extensive can be implemented

Some of the methods most commonly used test holes, you can use includes hand drilling, rotary drilling, percussion drilling and diamond drilling. 

The significance of the test drilling for gold

test drilling is to enhance the importance of prospecting before a mining operation, and drill testing is one of the methods most commonly used for sampling.

Albeit with very expensive, it takes some of the risk and guesswork out of the mining process and an estimate of how much gold there is in the area

The type of drilling specifies the device to be used. 

Hand Drilling

This is carried out in at a little place for little operations. Hand drilling done by using a manual hand, the phase required prior training stage, as sample tubes and augers. These drills can not penetrate bedrock and thus limited in its application entirely.

Variety of hand drilling tools can be used for hand drilling, but hand test can only for little gold mining drilling.The advantage of the hard drilling reduced cost of major methods, and this may be the best method for individual miners who lack the resources for greater exploration.

 Percussion Drilling

This type test drilling where the drilling equipment can be used to enter into the bedrock up to a depth of approximately 10 meters. Percussion drilling is drilling that uses compressed air drilling equipment, this makes lebihh far stronger than using a hand drill.There is also drilling using large air drilling equipment ,which can be used in complex drilling in the mining area.

Rotary Drilling

Rotary drilling is drilling relatively expensive yet very easy to use in a variety of conditions. In the drilling process using a ring and an air compressor in the process of drilling holes to be tested. With the true tools and skilled workers, this type of exploratory drilling takes the least time of all available drills. The drill may obtain samples from between 20 and 100 foot holes. 

Diamond Drilling

This is the most versatile drill testing method that can use. The machines used for this type of drilling gets superior most samples since it can drill deep and at a certain angle and conditions.

In most cases, drills are used herein, can be powered by electric engines, gasoline, diesel, and even air. However, the process can only slow and very expensive in practice and thus it is used only for complex projects that require extensive drilling.

This Video  from Hellix Ventures Inc. - Margarita Gold Drill Program



Gold refining is the final stage of the gold production and it consists of removing the impurities that remain in the precious metal after the smelting process. The companies that are specialized in refining are used to receiving both gold scrap and bars which they liquefy. Afterwards, the workers add borax and soda ash to the metal. With their help, the pure gold is separated from other precious metals and less precious metals.

When the procedure is over, a sample of the glittering metal is taken to a laboratory in order to determine if it is pure. If the gold is 99.9% pure then the workers can pour it into bars. The next step is determined to what the gold is intended.

When gold is combined with another metal they together form an alloy. You can tell alloys have been used with the precious metal by looking at its color: white- gold and nickel, silver, palladium; red/pink – gold and cooper; blue – gold an iron.

The glittering metal is measured in karats. This actually refers to how much gold is presented in an object versus another metal. If the karat is big, than the amount of precious metal is high. The 24 karat is 100% gold, the 12 karat has half as much.

People from different cultures prefer different types of karats. People from India like wearing 22 karat jewelry, while Europeans wear 18 karats and Americans are fond of 14 karat. This latter type of precious metal combines the glittering content with the affordability creating the perfect balance.



Related Article :

- Precious Metal Refiners Purify Gold ( Video )
- Precious Metal Recovery ( Video )

Gold Refining


Gold refining is the final stage of the gold production and it consists of removing the impurities that remain in the precious metal after the smelting process. The companies that are specialized in refining are used to receiving both gold scrap and bars which they liquefy. Afterwards, the workers add borax and soda ash to the metal. With their help, the pure gold is separated from other precious metals and less precious metals.

When the procedure is over, a sample of the glittering metal is taken to a laboratory in order to determine if it is pure. If the gold is 99.9% pure then the workers can pour it into bars. The next step is determined to what the gold is intended.

When gold is combined with another metal they together form an alloy. You can tell alloys have been used with the precious metal by looking at its color: white- gold and nickel, silver, palladium; red/pink – gold and cooper; blue – gold an iron.

The glittering metal is measured in karats. This actually refers to how much gold is presented in an object versus another metal. If the karat is big, than the amount of precious metal is high. The 24 karat is 100% gold, the 12 karat has half as much.

People from different cultures prefer different types of karats. People from India like wearing 22 karat jewelry, while Europeans wear 18 karats and Americans are fond of 14 karat. This latter type of precious metal combines the glittering content with the affordability creating the perfect balance.



Related Article :

- Precious Metal Refiners Purify Gold ( Video )
- Precious Metal Recovery ( Video )



Fire assaying for mineral is the oldest and is considered to be the most reliable method of determining the content of gold and silver in rock or concentrate samples. This method is still the industry standard. The reason why it is called ”fire” assay is simply because it involves smelting the sample which has been mixed with lead oxide.

There are six basic steps in the fire assay procedure: 
  • Splitting 
  • weighing 
  • mixing 
  • firing 
  • cupelling
  • parting.
How the process fire assaying for Mineral

First, the crushed and ground sample of ore or concentrate is carefully split down to smaller samples only around 30 grams. These samples are weighed out and added to a crucible. A mixture of lead oxide, a reducing agent and fluxes is then added. The fluxes usually consist of silica sand, borax and sometimes additional additives like fluorite. The fluxes, reductant, lead oxide and sample are then mixed and fired in a muffle furnace.

The contents of the test material into the container then let all the ingredients to melt in the furnace smelting. In the presence of the reducing agent, typically carbon in any form, e.g. flour, the lead oxide is smelted to lead metal which “collects” any silver and gold that may have been in the sample.

The molten mass is taken from the furnace and mixed before being poured into a cone-shaped mold and allowed to cool. The molten lead sinks to the bottom of the mold, carrying any gold and silver with it, while the rest of the components of the ore along with the flux turn into a glassy slag that floats on top.

After cooling, the metallic lead at the bottom of the mold is separated from the glassy slag which is discarded. The lead is called a “button.”

This metallic lead button is then placed into a cupel, a small dish made from bone ash, and placed into a cupelling furnace. In the “cupelling” process, lead metal turns back into oxide which separates away from the precious metals and soaks into the bone ash cupel, leaving the minute amount of precious metals as a metallic speck called a “bead.”

The next step in the process is called parting, where the bead is weighed to determine the amount of gold and silver that was extractable from the original ore sample.

The bead is then heated in hot nitric acid which dissolves the silver, leaving any gold that may have been present. The parted bead is then carefully weighed and amount of gold is related back to the weight of ore or concentrate sample in the first crucible that was burned.

In more modern laboratories, the bead of precious metals that is recovered in the cupel after the lead has been removed is dissolved in aqua regia. The resulting solution is then analyzed by atomic absorption spectrometry, allowing the grade of gold and silver in the original sample to be back calculated.

Fire assaying is a science, and also to some extent is still an art. Certain types of ore contain elements that may interfere with the result. A good fire assayer knows how to modify the composition of the flux to avoid these problems. The fire assayer knows how to determine the gold and silver content of the assay ton of sample that has been presented.


Video Fire Assay Explained- The Workhorse of Precious Metal Analysis - Gold, Silver and PGMs

Read Also :


- Precious Metal Refiners Purify Gold 
- Gold Analysis Technical By Chemical

How Process Fire Assaying For Mineral (Video)


Fire assaying for mineral is the oldest and is considered to be the most reliable method of determining the content of gold and silver in rock or concentrate samples. This method is still the industry standard. The reason why it is called ”fire” assay is simply because it involves smelting the sample which has been mixed with lead oxide.

There are six basic steps in the fire assay procedure: 
  • Splitting 
  • weighing 
  • mixing 
  • firing 
  • cupelling
  • parting.
How the process fire assaying for Mineral

First, the crushed and ground sample of ore or concentrate is carefully split down to smaller samples only around 30 grams. These samples are weighed out and added to a crucible. A mixture of lead oxide, a reducing agent and fluxes is then added. The fluxes usually consist of silica sand, borax and sometimes additional additives like fluorite. The fluxes, reductant, lead oxide and sample are then mixed and fired in a muffle furnace.

The contents of the test material into the container then let all the ingredients to melt in the furnace smelting. In the presence of the reducing agent, typically carbon in any form, e.g. flour, the lead oxide is smelted to lead metal which “collects” any silver and gold that may have been in the sample.

The molten mass is taken from the furnace and mixed before being poured into a cone-shaped mold and allowed to cool. The molten lead sinks to the bottom of the mold, carrying any gold and silver with it, while the rest of the components of the ore along with the flux turn into a glassy slag that floats on top.

After cooling, the metallic lead at the bottom of the mold is separated from the glassy slag which is discarded. The lead is called a “button.”

This metallic lead button is then placed into a cupel, a small dish made from bone ash, and placed into a cupelling furnace. In the “cupelling” process, lead metal turns back into oxide which separates away from the precious metals and soaks into the bone ash cupel, leaving the minute amount of precious metals as a metallic speck called a “bead.”

The next step in the process is called parting, where the bead is weighed to determine the amount of gold and silver that was extractable from the original ore sample.

The bead is then heated in hot nitric acid which dissolves the silver, leaving any gold that may have been present. The parted bead is then carefully weighed and amount of gold is related back to the weight of ore or concentrate sample in the first crucible that was burned.

In more modern laboratories, the bead of precious metals that is recovered in the cupel after the lead has been removed is dissolved in aqua regia. The resulting solution is then analyzed by atomic absorption spectrometry, allowing the grade of gold and silver in the original sample to be back calculated.

Fire assaying is a science, and also to some extent is still an art. Certain types of ore contain elements that may interfere with the result. A good fire assayer knows how to modify the composition of the flux to avoid these problems. The fire assayer knows how to determine the gold and silver content of the assay ton of sample that has been presented.


Video Fire Assay Explained- The Workhorse of Precious Metal Analysis - Gold, Silver and PGMs

Read Also :


- Precious Metal Refiners Purify Gold 
- Gold Analysis Technical By Chemical


Throughout the world there are mines that are extracting precious metals out of the ground and sending them to gold refiners where they can be purified. Taking the lumps of rock and ore that are mixed together in veins the precious metal refiners are able to extract the gold from the rest of the rock by melting it down.

Once in a liquid form the gold can be poured and cast into ingots or molded to form chains and other jewelry. By superheating the raw minerals to their boiling point gold refiners are able separate the rock and purify the precious metal to its full glory.

As gold is not always as shiny and brilliant when it is unearthed as it is once it has been refined most people do not recognize the valuable mineral if they were to stumble upon it while hiking. Running in veins through the rock the precious ore is mixed with all kinds of material that has to be separated and sifted before the gold receives its luster.

In many instances only the dull yellow tint of a rock reveals the gold that is hidden beneath the earth. Through the process of refining the dirt and other minerals fall away until all that remains in pure gold. However, most of the minerals that are surrounding the vein of gold contain other precious metals refiners can use in their work. Platinum, palladium, rhodium and silver can be found alongside the gold 


Precious Metal Refiners Purify Gold ( Video )


Throughout the world there are mines that are extracting precious metals out of the ground and sending them to gold refiners where they can be purified. Taking the lumps of rock and ore that are mixed together in veins the precious metal refiners are able to extract the gold from the rest of the rock by melting it down.

Once in a liquid form the gold can be poured and cast into ingots or molded to form chains and other jewelry. By superheating the raw minerals to their boiling point gold refiners are able separate the rock and purify the precious metal to its full glory.

As gold is not always as shiny and brilliant when it is unearthed as it is once it has been refined most people do not recognize the valuable mineral if they were to stumble upon it while hiking. Running in veins through the rock the precious ore is mixed with all kinds of material that has to be separated and sifted before the gold receives its luster.

In many instances only the dull yellow tint of a rock reveals the gold that is hidden beneath the earth. Through the process of refining the dirt and other minerals fall away until all that remains in pure gold. However, most of the minerals that are surrounding the vein of gold contain other precious metals refiners can use in their work. Platinum, palladium, rhodium and silver can be found alongside the gold 




The process of separating gold with spiral concentrator is the process of separating gold using equipment by utilizing gravity system for obtaining gold ore. Spiral concentrator is one of the most effective ways and low cost in the mining industry which is used in the separation of mineral ore. One of the benefits of a spiral concentrator devices have no moving parts. The separation process mineral ore concentrates in gold mining in general should be done gradually, and a function of the mineral separation process to separate gold ore from dirt mineral or bearer minerals

Gold Separation Process With Spiral Concentrators ( Video )


The process of separating gold with spiral concentrator is the process of separating gold using equipment by utilizing gravity system for obtaining gold ore. Spiral concentrator is one of the most effective ways and low cost in the mining industry which is used in the separation of mineral ore. One of the benefits of a spiral concentrator devices have no moving parts. The separation process mineral ore concentrates in gold mining in general should be done gradually, and a function of the mineral separation process to separate gold ore from dirt mineral or bearer minerals



Gold processing techniques using activated carbon or Gold leaching process with Carbon In Pulp  in gold mining is a way to separate the gold metal or extraction of separation of minerals gold with other impurities. Where part of the processing of Carbon In Pulp using cyanide solution to separation. The processing of gold first time with using a Carbon In Pulp (CIP) introduced in gold mining in the early 1980s, and is considered as a process that is simple and cheap in the gold mining industry. But processing using cyanide in gold mining if not done correctly, would harm the surrounding environment.

For separation gold process by means of Carbon In Pulp needed an activated carbon which serves as metal absorbent material and activated carbon material mostly made from coconut shells. In addition to from that required cyanide to stage gold mineral dissolution process of the sludge. Before the  leaching process in Carbon In pulp, mineral rock must have a size that such as flour, which later on will used as a slurry.

Gold Leaching Process With Carbon In Pulp ( Video )


Gold processing techniques using activated carbon or Gold leaching process with Carbon In Pulp  in gold mining is a way to separate the gold metal or extraction of separation of minerals gold with other impurities. Where part of the processing of Carbon In Pulp using cyanide solution to separation. The processing of gold first time with using a Carbon In Pulp (CIP) introduced in gold mining in the early 1980s, and is considered as a process that is simple and cheap in the gold mining industry. But processing using cyanide in gold mining if not done correctly, would harm the surrounding environment.

For separation gold process by means of Carbon In Pulp needed an activated carbon which serves as metal absorbent material and activated carbon material mostly made from coconut shells. In addition to from that required cyanide to stage gold mineral dissolution process of the sludge. Before the  leaching process in Carbon In pulp, mineral rock must have a size that such as flour, which later on will used as a slurry.



Underground mining process is done when the mineral stone, or precious metals found in very long distances to be at a depth of soil. Underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds. And The processing of underground gold mines is used where the depth of mineral ore below the surface makes open-cut mining uneconomic

Processing Of Underground Gold Mines ( Videos )


Underground mining process is done when the mineral stone, or precious metals found in very long distances to be at a depth of soil. Underground mining techniques used to excavate hard minerals, mainly those containing metals such as ore containing gold, silver, iron, copper, zinc, nickel, tin and lead, but also involves using the same techniques for excavating ores of gems such as diamonds. And The processing of underground gold mines is used where the depth of mineral ore below the surface makes open-cut mining uneconomic



Goldcorp (TSX: G; NYSE: GG) has been so growth-oriented over the past decade. In 2015 Goldcorps. Inc focus mining exploration on the discovery of high grade HG Young at the Red Lake mine. And in the Campbell Complex red lake gold mining district is completed underground drilling has commenced and will continue throughout 2015. Exploration drilling will also continue to focus on expansion of the R zone, NXT zone and the High Grade Zone (HGZ) up-plunge and at depth.

The Red Lake gold mine in the town of Red Lake in the province’s northwest is the world’s richest gold mine and is mined at the rate of 450 tonnes per day with an average grade of over 45 grams per tonne (1.3 ounces per tonne).

MINING OPERATIONS IN RED LAKE MINE

Mineral Ore Processing In Red Lake Mine


Goldcorp (TSX: G; NYSE: GG) has been so growth-oriented over the past decade. In 2015 Goldcorps. Inc focus mining exploration on the discovery of high grade HG Young at the Red Lake mine. And in the Campbell Complex red lake gold mining district is completed underground drilling has commenced and will continue throughout 2015. Exploration drilling will also continue to focus on expansion of the R zone, NXT zone and the High Grade Zone (HGZ) up-plunge and at depth.

The Red Lake gold mine in the town of Red Lake in the province’s northwest is the world’s richest gold mine and is mined at the rate of 450 tonnes per day with an average grade of over 45 grams per tonne (1.3 ounces per tonne).

MINING OPERATIONS IN RED LAKE MINE


Trommel Machine for Amalgamation Processing

The process of amalgamation or the processing of gold from rock using trommel machines are gold processing techniques the simplest and cheapest, and is typically used by small-scale miners. In the processing of gold rock using a trommel machine, most tools needed for processing is a trommel machine that functions as crusher and trap of gold ore from gold rock material as well as the tool is made of a steel drum. Many some people who do not know the form and the workings of this trommel machine. For this trommel machine we can make their own in a simple way.

HOW TO MAKING MACHINE TROMMEL FOR AMALGAMATION

How To Making Trommel Machine For Amalgamation

Trommel Machine for Amalgamation Processing

The process of amalgamation or the processing of gold from rock using trommel machines are gold processing techniques the simplest and cheapest, and is typically used by small-scale miners. In the processing of gold rock using a trommel machine, most tools needed for processing is a trommel machine that functions as crusher and trap of gold ore from gold rock material as well as the tool is made of a steel drum. Many some people who do not know the form and the workings of this trommel machine. For this trommel machine we can make their own in a simple way.

HOW TO MAKING MACHINE TROMMEL FOR AMALGAMATION



Kanowna Belle gold mines lies within the archaean Norseman-Wiluna greenstone belt and consists of a series of stacked lenses that have been identified over a strike length of 600m and to a depth of over 1,000m. The Kanowna Belle Gold Mine is a gold mines located 19 km north east of Kalgoorlie, Western Australia, near the ghost town of Kanowna. Gold prospecting in Kanowna Belle Australia was first discovered in 1893 about a year after Bayley and Ford discovered the Coolgardie Field and not long after Paddy Hannan located the gold-bearing alluvials that led to the discovery of the Golden Mile at Kalgoorlie-Boulder, also in 1893.

In mid-1999, Delta Gold bought North’s 50% share for AUS$90m, and became the sole owner. Delta subsequently merged with fellow Australian company, Goldfields Ltd, to form AurionGold, which in turn was bought by Canada's Placer Dome. In early 2006, Barrick Gold Corp acquired Placer Dome in a US$10.4bn takeover, and now wholly owns the Kanowna group of operations, which includes Kanowna Belle, the Paddington mill and various other open-pit gold mines in the area.

Gold Prospecting And Gold Deposit Kanowna Belle Australia

Mining Operations And Processing Minerals Ore Gold In Kanowna Belle Gold Mine


Kanowna Belle gold mines lies within the archaean Norseman-Wiluna greenstone belt and consists of a series of stacked lenses that have been identified over a strike length of 600m and to a depth of over 1,000m. The Kanowna Belle Gold Mine is a gold mines located 19 km north east of Kalgoorlie, Western Australia, near the ghost town of Kanowna. Gold prospecting in Kanowna Belle Australia was first discovered in 1893 about a year after Bayley and Ford discovered the Coolgardie Field and not long after Paddy Hannan located the gold-bearing alluvials that led to the discovery of the Golden Mile at Kalgoorlie-Boulder, also in 1893.

In mid-1999, Delta Gold bought North’s 50% share for AUS$90m, and became the sole owner. Delta subsequently merged with fellow Australian company, Goldfields Ltd, to form AurionGold, which in turn was bought by Canada's Placer Dome. In early 2006, Barrick Gold Corp acquired Placer Dome in a US$10.4bn takeover, and now wholly owns the Kanowna group of operations, which includes Kanowna Belle, the Paddington mill and various other open-pit gold mines in the area.

Gold Prospecting And Gold Deposit Kanowna Belle Australia


How to process gold ore in the mining ? This is the  Video How To Process Gold Ore In Nevada Gold Mines


Gold mining is the gold mining process or gold ores from the ground. There are several techniques and process of gold which may be extracted from the underground. Gold mining in Nevada, a state of the United States, is a major industry, and one of the largest sources of gold in the world 

Until recently, gold exploration and gold mining production in Nevada has been focused on low grade surface deposits mined as open pits. As they probed deeper, they discovered even richer gold deposits. Development of these higher grade gold deposits as underground mines and the probability of discovering similar high grade deposits below Nevada's scarcely explored vast overburden has added new excitement to the state's gold potential.

Gold Mining in Nevada has a vast assortment of rocks and minerals. Igneous rocks include those from gabbro, diorite, and granite intrusions, and basalt, andesite, and rhyolite flows, breccias, and tuffs. Sedimentary rocks include conglomerate, sandstone, siltstone, shale, argillite, limestone, and dolomite. Metamorphic rocks include gneiss, schist, phyllite, slate, marble, hornfels, and skarn and various other types of metaigneous and metasedimentary rocks. Many types of minerals, both common and obscure, are also present.

Video How To Process Gold Ore In Nevada Gold Mines

How to process gold ore in the mining ? This is the  Video How To Process Gold Ore In Nevada Gold Mines


Gold mining is the gold mining process or gold ores from the ground. There are several techniques and process of gold which may be extracted from the underground. Gold mining in Nevada, a state of the United States, is a major industry, and one of the largest sources of gold in the world 

Until recently, gold exploration and gold mining production in Nevada has been focused on low grade surface deposits mined as open pits. As they probed deeper, they discovered even richer gold deposits. Development of these higher grade gold deposits as underground mines and the probability of discovering similar high grade deposits below Nevada's scarcely explored vast overburden has added new excitement to the state's gold potential.

Gold Mining in Nevada has a vast assortment of rocks and minerals. Igneous rocks include those from gabbro, diorite, and granite intrusions, and basalt, andesite, and rhyolite flows, breccias, and tuffs. Sedimentary rocks include conglomerate, sandstone, siltstone, shale, argillite, limestone, and dolomite. Metamorphic rocks include gneiss, schist, phyllite, slate, marble, hornfels, and skarn and various other types of metaigneous and metasedimentary rocks. Many types of minerals, both common and obscure, are also present.



The Cortez gold mine is located 100 kilometers southwest of Elko, Nevada in Lander County. The Cortez is found on the southern portion of the Battle Mountain-Eureka Trend in north central Nevada. Cortez Gold Mine is a large gold mining and processing facility in Lander and Eureka County, Nevada, United States, located approximately 75 miles (120 km) southwest of Elko. 

Cortez gold mines in Nevada is owned and operated by Barrick Gold and comprises the Pipeline and South Pipeline deposits and the Cortez Hills deposit.The Cortez Pipeline property is 11 kilometers northwest and the Cortez Pediment property (which includes the Cortez Hills deposit) is 4 kilometers southeast of the original Cortez milling complex. The Pipeline and South Pipeline deposits are mined by conventional open-pit methods.  

The Cortez property covers approximately 2,800 square kilometers on one of the world’s most highly prospective mineral trends. Pipeline and South Pipeline are open pit mines, while Cortez Hills is an underground and open pit mining operation. Under continuous operation, Cortez has been open longer than any gold mine in the state of Nevada. It is Barrick's and Nevada's largest gold producer.

Mining Operations Cortez Gold Mines In Nevada United States of America

The Pipeline and South Pipeline deposits are currently being mined using traditional open pit mining techniques, while the Cortez Hills deposit be mined out using both open pit and underground mining techniques.

Mining Operations And Gold Processing In Cortez Mine Nevada


The Cortez gold mine is located 100 kilometers southwest of Elko, Nevada in Lander County. The Cortez is found on the southern portion of the Battle Mountain-Eureka Trend in north central Nevada. Cortez Gold Mine is a large gold mining and processing facility in Lander and Eureka County, Nevada, United States, located approximately 75 miles (120 km) southwest of Elko. 

Cortez gold mines in Nevada is owned and operated by Barrick Gold and comprises the Pipeline and South Pipeline deposits and the Cortez Hills deposit.The Cortez Pipeline property is 11 kilometers northwest and the Cortez Pediment property (which includes the Cortez Hills deposit) is 4 kilometers southeast of the original Cortez milling complex. The Pipeline and South Pipeline deposits are mined by conventional open-pit methods.  

The Cortez property covers approximately 2,800 square kilometers on one of the world’s most highly prospective mineral trends. Pipeline and South Pipeline are open pit mines, while Cortez Hills is an underground and open pit mining operation. Under continuous operation, Cortez has been open longer than any gold mine in the state of Nevada. It is Barrick's and Nevada's largest gold producer.

Mining Operations Cortez Gold Mines In Nevada United States of America

The Pipeline and South Pipeline deposits are currently being mined using traditional open pit mining techniques, while the Cortez Hills deposit be mined out using both open pit and underground mining techniques.


        Gold processing methods with the Carbon in pulp are often used in large-scale gold mining processing, where the active carbon in pulp method used for recovery of gold ore minerals in the washing tank. Tanks that are used are usually equipped with an agitator and air bubbles equipment and tools are designed to maintain solids in suspension in the slurry, and the achievement of leaching. In the process adsorption ore minerals in the soil material condition of the tank should be good enough to form a slurry that can flow under gravity or when pumped. To form a slurry, mineral ore in the mix with water and the reagent was added to the tank to get the gold leaching reaction

How to work the gold extraction process with carbon adsorption in the pulp can be explained by the following system

Gold Processing With Method Carbon In Pulp

        Gold processing methods with the Carbon in pulp are often used in large-scale gold mining processing, where the active carbon in pulp method used for recovery of gold ore minerals in the washing tank. Tanks that are used are usually equipped with an agitator and air bubbles equipment and tools are designed to maintain solids in suspension in the slurry, and the achievement of leaching. In the process adsorption ore minerals in the soil material condition of the tank should be good enough to form a slurry that can flow under gravity or when pumped. To form a slurry, mineral ore in the mix with water and the reagent was added to the tank to get the gold leaching reaction

How to work the gold extraction process with carbon adsorption in the pulp can be explained by the following system


      Heap leaching mining was developed as a mineral processing low-grade metal that is more efficient and minimal cost. Compared with conventional cyanidation process of the mineral leaching process with stirred tank Heap leaching has several advantages in the form of designs that use a very simple, operating costs are also minimal, and in requiring less investment, because the heap leaching recovery is around 60% to 80 %.

 In large-scale process technology was first used and applied to the mining of gold ore at Carlin Nevada USA in 1970. This process has really made ​​a lot of mines that can easily take on geological resources that have a low grade and transforming them into the category of proven ore. Ore value as low as 0.01 oz Au can be processed by heap leaching system is economically.
       Besides gold and silver, cyanidation is also often used to recover copper content in the rock, due to the nature of this metal is very easily soluble in both the cyanide. And sometimes too much copper in the rocks encountered in the content of gold and silver cyanidation method on the rocks so that it is still economical given.

Heap leaching generally requires 60 to 90 days for processing of ore that can be leached in 24 hours in a conventional agitated leach process. Gold recovery is usually 70% compared with 90% in agitated leach plant. Even with this low performance, the heap leaching process has facilitated the processing of natural resources, because the processing cost is much reduced compared with agitated leaching.
        The process involves the leaching of rocks and placed as well as the destruction of rock minerals that contain metal ore in a heap on the building on a floor stand. The foundations of leaching (leaching pad) can be made permanently using a hardening of the concrete floor or foundation and geo-coated membrane (high density polyethylene) cyanide solution is distributed at the top of the stack and then the liquid seeps down through the pile of ore and dissolves the gold through a pile interrupted. Gold laden minerals flowing out from the bottom of the pile and is collected for gold recovery by carbon adsorption either with or zinc precipitation. Barren solution is then recycled to the next pile.
Some of the benefits or advantages from the use of heap leaching system are as follows:
  1. Extraction from the heap leaching is usually carried out on the rocks -3 / 4 inches, whereas extraction in agitated leaching in stirred tank requires a reduction to -200 mesh size of 100 mesh or need. 
  2. Solid liquid separation step is not necessary to heap leaching on the heap leaching system.
  3. Tailings disposal costs are high enough for the modern agitated leach plant. Large dam expensive fluid retention is required. For comparison, heap leach pads can generally be left in place after reclamation.
Some Disadvantages heap leaching system, in addition to a lower recovery compared with agitated leaching heap leaching, including: 
  1. Ore stacked must be porous enough to allow solution to drip or drain water solution through the slit pore. There are plenty of recovery failure due to inability to obtain the flow solution. It's a lot of experience when the ore has high clay content or in rocks containing clay very much. This problem is often solved by agglomeration prior to stacking piles. 
  2. In areas of high rainfall, the solution of balance problems can arise, so it requires a lot of care and discharge processes. 
  3. In areas where extremely cold, freezing the pile can result in low recovery period. Modification of operational procedures such as subsurface application solutions has been reduced, but not eliminated this concern.
System Flow Chart In a Simple Heap Leaching 
In general, processing system gold using heap leaching method can be described as the chart below

Transport of rock minerals on lands open pit using dump trucks
 
Rock mineral that is ready to be destroyed and soften
 

Destruction of rock done to get smaller sized rocks. Size obtained usually ± 20mm. And used machines are machines Hammer Mill, Stone Crusher or Jaws Crusher
 
 
Placement of material that has been crushed and refined into the foundation leaching 











Cyanide solution through water storage tank in the pump and the pipe through the hose and spray the spray solution of sodium cyanide on rock minerals on the leaching
 











Recharge cycles in which the metal minerals will drop to flow down through the rock broke into the flow of irrigation. The solution then percolates through the pile and dissolve both the target and other minerals. Leach solution containing dissolved minerals are then collected, processed in a factory process to recover the mineral targets. In heap leaching using carbon adsorption techniques in column Carbon (CIC) in which the solution containing the gold complex flows in tanks containing activated carbon in series and multilevel 
 

In heap leaching using carbon adsorption techniques in column Carbon (CIC) in which the solution containing the gold complex flows in tanks containing activated carbon in series and terraced. 
 

Activated carbon that has been filtered and removed from the vat of mineral-rich bath solution can absorb gold from 100 up to 400 ounces per ton of carbon, the efficiency will drop if content of the solution decreases. Precious metals in the capture of carbon by passing a hot solution of caustic soda and cyanide mixture (1% NaOH and 1% NaCN) Activated carbon can be reused by reactivation in advance using the rotary kiln at a temperature of 730 degrees Celsius for 20 minutes
 

Melting Process of activated carbon and Metal Refining Gold.

gold bullion metals

Heap Leaching Mining

      Heap leaching mining was developed as a mineral processing low-grade metal that is more efficient and minimal cost. Compared with conventional cyanidation process of the mineral leaching process with stirred tank Heap leaching has several advantages in the form of designs that use a very simple, operating costs are also minimal, and in requiring less investment, because the heap leaching recovery is around 60% to 80 %.

 In large-scale process technology was first used and applied to the mining of gold ore at Carlin Nevada USA in 1970. This process has really made ​​a lot of mines that can easily take on geological resources that have a low grade and transforming them into the category of proven ore. Ore value as low as 0.01 oz Au can be processed by heap leaching system is economically.
       Besides gold and silver, cyanidation is also often used to recover copper content in the rock, due to the nature of this metal is very easily soluble in both the cyanide. And sometimes too much copper in the rocks encountered in the content of gold and silver cyanidation method on the rocks so that it is still economical given.

Heap leaching generally requires 60 to 90 days for processing of ore that can be leached in 24 hours in a conventional agitated leach process. Gold recovery is usually 70% compared with 90% in agitated leach plant. Even with this low performance, the heap leaching process has facilitated the processing of natural resources, because the processing cost is much reduced compared with agitated leaching.
        The process involves the leaching of rocks and placed as well as the destruction of rock minerals that contain metal ore in a heap on the building on a floor stand. The foundations of leaching (leaching pad) can be made permanently using a hardening of the concrete floor or foundation and geo-coated membrane (high density polyethylene) cyanide solution is distributed at the top of the stack and then the liquid seeps down through the pile of ore and dissolves the gold through a pile interrupted. Gold laden minerals flowing out from the bottom of the pile and is collected for gold recovery by carbon adsorption either with or zinc precipitation. Barren solution is then recycled to the next pile.
Some of the benefits or advantages from the use of heap leaching system are as follows:
  1. Extraction from the heap leaching is usually carried out on the rocks -3 / 4 inches, whereas extraction in agitated leaching in stirred tank requires a reduction to -200 mesh size of 100 mesh or need. 
  2. Solid liquid separation step is not necessary to heap leaching on the heap leaching system.
  3. Tailings disposal costs are high enough for the modern agitated leach plant. Large dam expensive fluid retention is required. For comparison, heap leach pads can generally be left in place after reclamation.
Some Disadvantages heap leaching system, in addition to a lower recovery compared with agitated leaching heap leaching, including: 
  1. Ore stacked must be porous enough to allow solution to drip or drain water solution through the slit pore. There are plenty of recovery failure due to inability to obtain the flow solution. It's a lot of experience when the ore has high clay content or in rocks containing clay very much. This problem is often solved by agglomeration prior to stacking piles. 
  2. In areas of high rainfall, the solution of balance problems can arise, so it requires a lot of care and discharge processes. 
  3. In areas where extremely cold, freezing the pile can result in low recovery period. Modification of operational procedures such as subsurface application solutions has been reduced, but not eliminated this concern.
System Flow Chart In a Simple Heap Leaching 
In general, processing system gold using heap leaching method can be described as the chart below

Transport of rock minerals on lands open pit using dump trucks
 
Rock mineral that is ready to be destroyed and soften
 

Destruction of rock done to get smaller sized rocks. Size obtained usually ± 20mm. And used machines are machines Hammer Mill, Stone Crusher or Jaws Crusher
 
 
Placement of material that has been crushed and refined into the foundation leaching 











Cyanide solution through water storage tank in the pump and the pipe through the hose and spray the spray solution of sodium cyanide on rock minerals on the leaching
 











Recharge cycles in which the metal minerals will drop to flow down through the rock broke into the flow of irrigation. The solution then percolates through the pile and dissolve both the target and other minerals. Leach solution containing dissolved minerals are then collected, processed in a factory process to recover the mineral targets. In heap leaching using carbon adsorption techniques in column Carbon (CIC) in which the solution containing the gold complex flows in tanks containing activated carbon in series and multilevel 
 

In heap leaching using carbon adsorption techniques in column Carbon (CIC) in which the solution containing the gold complex flows in tanks containing activated carbon in series and terraced. 
 

Activated carbon that has been filtered and removed from the vat of mineral-rich bath solution can absorb gold from 100 up to 400 ounces per ton of carbon, the efficiency will drop if content of the solution decreases. Precious metals in the capture of carbon by passing a hot solution of caustic soda and cyanide mixture (1% NaOH and 1% NaCN) Activated carbon can be reused by reactivation in advance using the rotary kiln at a temperature of 730 degrees Celsius for 20 minutes
 

Melting Process of activated carbon and Metal Refining Gold.

gold bullion metals

      Gold mining was first carried out in alluvial areas. Processing system is also very simple to do that is by panning using a tray, which then developed with gold mining wave table, and followed by gravity separation method using the amalgamation process with the capture of mercury. Gold exploration in the lower layers of soil to get the primary sediment deposits began in 1860 with gold using a cyanide treatment system. And in 1960 the method of processing low-grade gold began being applied, which carried out the processing system through leaching heap, this process is basically developed from gold processing system using cyanidation . Of all the gold mineral processing must go through several stages in all these stages it is absolutely live to get the desired results, as for some stages it can be underlined by the diagram below

GOLD ORE
 CRUSHING / MILLING

GOLD BARS


Explanation Of The Gold Processing In A Simple Diagram Above :


Diagram Of Gold Mining Processing

      Gold mining was first carried out in alluvial areas. Processing system is also very simple to do that is by panning using a tray, which then developed with gold mining wave table, and followed by gravity separation method using the amalgamation process with the capture of mercury. Gold exploration in the lower layers of soil to get the primary sediment deposits began in 1860 with gold using a cyanide treatment system. And in 1960 the method of processing low-grade gold began being applied, which carried out the processing system through leaching heap, this process is basically developed from gold processing system using cyanidation . Of all the gold mineral processing must go through several stages in all these stages it is absolutely live to get the desired results, as for some stages it can be underlined by the diagram below

GOLD ORE
 CRUSHING / MILLING

GOLD BARS


Explanation Of The Gold Processing In A Simple Diagram Above :



Panning fine gold concentrates by hand is difficult and tedious, however, when set up and operated properly, the Blue Bowl can recover Gold as fine as talcum powder!

This Concentrator Kit weighs about 5 pounds and includes the Blue Bowl, leg levelers for using on a 5 gallon bucket, 1/4 ounce plastic vial for displaying your gold, 750 gallon per hour 12 volt pump, three feet of 3/4 inch flex hose, a pair of battery clips, and how-to instructions.

    Concentrator Kit includes the Blue Bowl, 3 plastic leg levelers, 1/4 ounce plastic vial for storing your gold, 750 gallon per hour 12 volt pump, 3 feet of 3/4 inch flex hose, pair of battery clips, and instructions.
    The Blue Bowl Gold Concentrator is completely portable and will quickly remove your fine gold from your concentrates. It is designed to work forever, with no moving parts to wear out or break.
    Pre-screen your concentrates to at least 30-mesh using a classifier before adding to your Blue Bowl.
    To recover micro-fines, prescreen the concentrates using a 50 or 100 mesh classifier.
  
READ MORE >>> Blue Bowl Concentrator Kit with Pump, Leg Levelers, Vial - Gold Mining Equipment

Panning Gold Equipment

Panning fine gold concentrates by hand is difficult and tedious, however, when set up and operated properly, the Blue Bowl can recover Gold as fine as talcum powder!

This Concentrator Kit weighs about 5 pounds and includes the Blue Bowl, leg levelers for using on a 5 gallon bucket, 1/4 ounce plastic vial for displaying your gold, 750 gallon per hour 12 volt pump, three feet of 3/4 inch flex hose, a pair of battery clips, and how-to instructions.

    Concentrator Kit includes the Blue Bowl, 3 plastic leg levelers, 1/4 ounce plastic vial for storing your gold, 750 gallon per hour 12 volt pump, 3 feet of 3/4 inch flex hose, pair of battery clips, and instructions.
    The Blue Bowl Gold Concentrator is completely portable and will quickly remove your fine gold from your concentrates. It is designed to work forever, with no moving parts to wear out or break.
    Pre-screen your concentrates to at least 30-mesh using a classifier before adding to your Blue Bowl.
    To recover micro-fines, prescreen the concentrates using a 50 or 100 mesh classifier.
  
READ MORE >>> Blue Bowl Concentrator Kit with Pump, Leg Levelers, Vial - Gold Mining Equipment

Kit includes: Mountain Goat Trommel, Desert Fox Automatic Gold Panning Machine (w/ speed control), and Trommel Transefer Kit. Speed up your gold processing work and increase gold recovery with the Mountain Goat Gold Trommel. This machine is aptly named because it can eat almost anything and is light enough to carry up a mountain! The Mountain Goat Trommel is a reverse helix system built on the same principle as the huge mining trommels used by large mining companies all over the world, but this is light and portable. It is not to be confused with gravel pit trommels, though, which are designed to classify gravels. 
The reverse helix system came from the Archimedes Screw Pump invented over 2,000 years ago by the mathematician Archimedes. Someone discovered that the pump brought up GOLD along with the water they were pumping out of the Nile river! The Mountain Goat is very efficient because the spiral riffles inside of the tube turn and bring the heavy materials up to the high end of the tube while allowing the lighter materials to flow out of the back of the tube as tailings. This system makes the trommel self-cleaning, which eliminates the need to break down for clean-up as is necessary with sluice box type equipment. Recover 50 times MORE GOLD with the Desert Fox Automatic Gold Panning Machine! With the Desert Fox, you can work concentrates down much faster. Not only will your speed increase, your gold recovery and efficiency will improve by a factor of 50. That's not a misprint! You will recover 50 times more gold with the Desert Fox than working by hand with a gold pan. More gold, less time, and a lot less work. And with the new proprietary variable speed model, you can adjust for maximum gold recovery no matter what type of material you are panning.

Gold Panning Machine Speed Up Your Gold Processing Work

Kit includes: Mountain Goat Trommel, Desert Fox Automatic Gold Panning Machine (w/ speed control), and Trommel Transefer Kit. Speed up your gold processing work and increase gold recovery with the Mountain Goat Gold Trommel. This machine is aptly named because it can eat almost anything and is light enough to carry up a mountain! The Mountain Goat Trommel is a reverse helix system built on the same principle as the huge mining trommels used by large mining companies all over the world, but this is light and portable. It is not to be confused with gravel pit trommels, though, which are designed to classify gravels. 
The reverse helix system came from the Archimedes Screw Pump invented over 2,000 years ago by the mathematician Archimedes. Someone discovered that the pump brought up GOLD along with the water they were pumping out of the Nile river! The Mountain Goat is very efficient because the spiral riffles inside of the tube turn and bring the heavy materials up to the high end of the tube while allowing the lighter materials to flow out of the back of the tube as tailings. This system makes the trommel self-cleaning, which eliminates the need to break down for clean-up as is necessary with sluice box type equipment. Recover 50 times MORE GOLD with the Desert Fox Automatic Gold Panning Machine! With the Desert Fox, you can work concentrates down much faster. Not only will your speed increase, your gold recovery and efficiency will improve by a factor of 50. That's not a misprint! You will recover 50 times more gold with the Desert Fox than working by hand with a gold pan. More gold, less time, and a lot less work. And with the new proprietary variable speed model, you can adjust for maximum gold recovery no matter what type of material you are panning.



New Kwik Kiln Propane Melting chamber Set 21A Designed to melt around 2-5 ounces of Gold. This Kwik Kiln set can be used with Silver, Copper, Aluminum, Brass and other precious metals. The Kwik Kiln uses 2 propane or MAPP gas bottles (Not Included). 

Kiln Dimensions - Outer - 4" (101mm) Dia. x 4" (101mm) Height Inner - 1.756" (44mm) Dia. x 1.53" (39mm) Depth Wall Thickness 1.15"(30mm) Kiln Set Includes - 1 - Kiwk Kiln 1 pair of 13" Long Heat Resistant Gloves 1 - 1 oz Gold Graphite Ingot Mold 1 - 5/16" x 12" Graphite Stir Rod 1 - 4 oz Borax Casting Flux 1 - Set of Tongs 2 - Graphite Crucibles (Holds up to 6 oz of Gold Each) Propane Bottles not included This unit is portable - Take it with you and melt up to 5 ounces of gold! Designed for Jewelers, Metalsmiths and Refiners

Furnace Set Melting Oven Kit Set for Melting Gold Silver Copper Precious Metals



New Kwik Kiln Propane Melting chamber Set 21A Designed to melt around 2-5 ounces of Gold. This Kwik Kiln set can be used with Silver, Copper, Aluminum, Brass and other precious metals. The Kwik Kiln uses 2 propane or MAPP gas bottles (Not Included). 

Kiln Dimensions - Outer - 4" (101mm) Dia. x 4" (101mm) Height Inner - 1.756" (44mm) Dia. x 1.53" (39mm) Depth Wall Thickness 1.15"(30mm) Kiln Set Includes - 1 - Kiwk Kiln 1 pair of 13" Long Heat Resistant Gloves 1 - 1 oz Gold Graphite Ingot Mold 1 - 5/16" x 12" Graphite Stir Rod 1 - 4 oz Borax Casting Flux 1 - Set of Tongs 2 - Graphite Crucibles (Holds up to 6 oz of Gold Each) Propane Bottles not included This unit is portable - Take it with you and melt up to 5 ounces of gold! Designed for Jewelers, Metalsmiths and Refiners