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Started by BUBKWEY
Hi fellow metallurgists, Before trying this new prosuct "Eco-Goldex O series " to replace Sodium Cyanide in my VAT leaching operations, I would like to get some firsthand proof from anyone in here about the following: -Is "Eco-Goldex O se...
Hi fellow metallurgists, Before trying this new prosuct "Eco-Goldex O series " to replace Sodium Cyanide in my VAT leaching operations, I would like to get some firsthand proof from anyone in here about the following: -Is "Eco-Goldex O se...
Last replied to by Ivan Brezani
To start with: I have a scientific background in Mineral Processing I am working for an active gold mine/processing plant in the EU I have conducted a number of tests with Eco-Goldex O series as we...
To start with: I have a scientific background in Mineral Processing I am working for an active gold mine/processing plant in the EU I have conducted a number of tests with Eco-Goldex O series as we...
3
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1216
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Started by shastry
Hello, Our leaching plant is manually operated and we want to go for complete Automation ours is 2000 tonnes per day capacity plant. Hence please give me the inputs where to start from and what all the equipments required.
Hello, Our leaching plant is manually operated and we want to go for complete Automation ours is 2000 tonnes per day capacity plant. Hence please give me the inputs where to start from and what all the equipments required.
5
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1493
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Started by Jackson
Hello!! hope everyone is OK!!! well, going straight to my question;i was doing bottle rolling so as to establish some of the factors that will be optimum to the newly planned to process low grade sulfide gold ore gold processing plant. While doing t...
Hello!! hope everyone is OK!!! well, going straight to my question;i was doing bottle rolling so as to establish some of the factors that will be optimum to the newly planned to process low grade sulfide gold ore gold processing plant. While doing t...
3
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1172
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Started by Joeram
I tried every acid combination. I tried roast and smelt with different fluxes. I have 2 assay's and a Lab report on my ore.I sent cons not rock, so they could only give me the amount per what I sent not on per ton. Au,lr,pd,pt&rh. It takes 1 -5 gallo...
I tried every acid combination. I tried roast and smelt with different fluxes. I have 2 assay's and a Lab report on my ore.I sent cons not rock, so they could only give me the amount per what I sent not on per ton. Au,lr,pd,pt&rh. It takes 1 -5 gallo...
Last replied to by Jose Doneiber
Hello, Joeram.Nice to meet you.Can you please give me a copy of your manual cyanide pdf ?.I am very attentive.Thank you
Hello, Joeram.Nice to meet you.Can you please give me a copy of your manual cyanide pdf ?.I am very attentive.Thank you
2
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2333
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Started by Paulo Mrewa
I need help with design and schematics of 40tonne vat leach tanks, the old ones have had an unusually low flowrate, i need to build new ones
I need help with design and schematics of 40tonne vat leach tanks, the old ones have had an unusually low flowrate, i need to build new ones
Last commented on by SmartDog
I generally as long as your floor is sloped at least by at least 1% you should have flow, unless everything is plugged up as Paulo said.
I generally as long as your floor is sloped at least by at least 1% you should have flow, unless everything is plugged up as Paulo said.
4
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1151
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Started by Millza79
Hi All, Just hoping I can ask some technical questions. In any gold or silver plants you have run: · Did you add lead nitrate, and if so, where was it added (in ball mill, separate tank etc), how much (g/t), and what was the co...
Hi All, Just hoping I can ask some technical questions. In any gold or silver plants you have run: · Did you add lead nitrate, and if so, where was it added (in ball mill, separate tank etc), how much (g/t), and what was the co...
2
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870
VIEWS
Started by LLandwehr
I am looking for methods to predict the recovery of a single ore source from historical data, namely a blend of multiple ores in different ratios and overall recovery for each day. It's a CIL plant and the ore types are all similiar in composition an...
I am looking for methods to predict the recovery of a single ore source from historical data, namely a blend of multiple ores in different ratios and overall recovery for each day. It's a CIL plant and the ore types are all similiar in composition an...
Last replied to by Dave Tahija
As noted by Colette, the synergies between different ores in a blend are really important and make it impossible to precisely determine a specific recovery from a particular ore. If you have good data...
As noted by Colette, the synergies between different ores in a blend are really important and make it impossible to precisely determine a specific recovery from a particular ore. If you have good data...
4
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1113
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Started by oro
I am learning / testing a torch assay method for ores and leaches developed a couple decades ago by Charles Butler. He developed the system for small - medium scale hard rock miners so they can perform initial tests on ores in the field and leaches...
I am learning / testing a torch assay method for ores and leaches developed a couple decades ago by Charles Butler. He developed the system for small - medium scale hard rock miners so they can perform initial tests on ores in the field and leaches...
3
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1169
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Started by Seeker
I want to recover gold from gold cyanide solution. This solution contains hydrogen peroxide also. I have tried metal displacement method. It does not give complete gold recovery. Please suggest me some chemical method through which I can recover al...
I want to recover gold from gold cyanide solution. This solution contains hydrogen peroxide also. I have tried metal displacement method. It does not give complete gold recovery. Please suggest me some chemical method through which I can recover al...
2
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967
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Started by Jaime Jacob
Hello I am working with column leaching test for copper ores and I need to model the net and raw acid consumption.Anyone could help me with this? Send me some scientific study? I hope that can help meThank you very much Jaime
Hello I am working with column leaching test for copper ores and I need to model the net and raw acid consumption.Anyone could help me with this? Send me some scientific study? I hope that can help meThank you very much Jaime
Last replied to by Jaime Jacob
Hello David What I need to do is modelling the gross comsumption of acid from a column leaching test. For example, if we want to model a copper recovery, we use the expression: R = Rmax *(1-exp(-...
Hello David What I need to do is modelling the gross comsumption of acid from a column leaching test. For example, if we want to model a copper recovery, we use the expression: R = Rmax *(1-exp(-...
0
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1009
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Started by Millza79
Could anyone please tell me what the K and n values (Fleming numbers) mean for this test? What do high and low values off both values mean about the ore, and the design (in layman terms)?
Could anyone please tell me what the K and n values (Fleming numbers) mean for this test? What do high and low values off both values mean about the ore, and the design (in layman terms)?
9
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2541
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Started by ksherren
I am looking for companies who have expertise with designing/fabricating/operating vertical carbon adsorption columns in heap leach CIC circuits.
I am looking for companies who have expertise with designing/fabricating/operating vertical carbon adsorption columns in heap leach CIC circuits.
Last replied to by rob riggir
I have some drawings of columns including NIMCIX. Cheers
I have some drawings of columns including NIMCIX. Cheers
3
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1558
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Started by Seeker
We have a gold cyanide solution of 30 liters. We removed gold from gold fingers. We used 500 grams of commercial grade sodium cyanide and 1.5 liters of hydrogen peroxide of 36%. This solution contains 100 grams of gold around 5 grams of iron and 5 ...
We have a gold cyanide solution of 30 liters. We removed gold from gold fingers. We used 500 grams of commercial grade sodium cyanide and 1.5 liters of hydrogen peroxide of 36%. This solution contains 100 grams of gold around 5 grams of iron and 5 ...
1
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900
VIEWS
Started by Njau
Hello, i need to know the effect of sodium ions as salt composition during leaching. if there is effect at which concentration. pls i need help
Hello, i need to know the effect of sodium ions as salt composition during leaching. if there is effect at which concentration. pls i need help
Last replied to by Ron G
I am guessing that sodium is purely a spectator but it would help for you to give approximations of the concentrations of known ions present.
I am guessing that sodium is purely a spectator but it would help for you to give approximations of the concentrations of known ions present.
1
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976
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Started by BUBKWEY
I have stockpiled several thousand tons of TAILINGS in my former Mining Site, which have Very much content of Copper (>10,000 ppm). Silver and Sulphur are there as well though not at an alarming quantity as that of Copper (Silver ~4000ppm, Sulphur...
I have stockpiled several thousand tons of TAILINGS in my former Mining Site, which have Very much content of Copper (>10,000 ppm). Silver and Sulphur are there as well though not at an alarming quantity as that of Copper (Silver ~4000ppm, Sulphur...
2
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3
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948
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Started by Alex Loutou
Dear Collega, How to manage Mercury in pregnant solution (0.02 ppm) which is became 400-500ppm in the filtered cake.It is problem with environtent. any suggestion will highly apreciated regards, Alex L
Dear Collega, How to manage Mercury in pregnant solution (0.02 ppm) which is became 400-500ppm in the filtered cake.It is problem with environtent. any suggestion will highly apreciated regards, Alex L
2
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1621
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Started by John Urban
I made a mistake, and started off using nitric acid that was too concentrated. When I refine scrap jewellery from a customer, I calculate how much gold there is, and then melt in enough copper to bring it down to 4 kt. I pour the melt into a bucket o...
I made a mistake, and started off using nitric acid that was too concentrated. When I refine scrap jewellery from a customer, I calculate how much gold there is, and then melt in enough copper to bring it down to 4 kt. I pour the melt into a bucket o...
Last commented on by John Urban
Thanks, Dave. I think your answer is the most likely.
Thanks, Dave. I think your answer is the most likely.
5
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1083
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Started by sirjohnnyhuman
We are a small company operating in Brazil mining quartz hosted gold from a Greenstone Belt. I have recently started with the company, although I have been a long term follower and investor and I'm looking at all areas to try to understand the dif...
We are a small company operating in Brazil mining quartz hosted gold from a Greenstone Belt. I have recently started with the company, although I have been a long term follower and investor and I'm looking at all areas to try to understand the dif...
5
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1130
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Started by Teggry
Hi, I have touched on the subject before and am still looking for a cheap, inexpensive way to extract gold from old and undersized loaded carbon. Question- is it possible to heap leach carbon? I.E. Stack carbon on a pad and leach the gold out of it...
Hi, I have touched on the subject before and am still looking for a cheap, inexpensive way to extract gold from old and undersized loaded carbon. Question- is it possible to heap leach carbon? I.E. Stack carbon on a pad and leach the gold out of it...
6
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1096
VIEWS
Started by jovanifirebird
hello guys. we have gravity gold fed to the plant for the past 9 months. do we expect for some of the gold to go down the bottom of the leach tanks before cyanidation occurs. because we did a weekly GIC, but we still got gold losses. but from the lab...
hello guys. we have gravity gold fed to the plant for the past 9 months. do we expect for some of the gold to go down the bottom of the leach tanks before cyanidation occurs. because we did a weekly GIC, but we still got gold losses. but from the lab...
Last commented on by James Wise
Check all processing launders/pipes or any access where a fine ribbed cloth or mat etc can be laid to highly concentrate fine gold in no time flat.
Check all processing launders/pipes or any access where a fine ribbed cloth or mat etc can be laid to highly concentrate fine gold in no time flat.
1
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862
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Started by Ethan
Hello friends, can someone help me with how to precipitate gold thio-cyanate ?as well as from which materials are resins made of?
Hello friends, can someone help me with how to precipitate gold thio-cyanate ?as well as from which materials are resins made of?
Last replied to by SmartDog
Thiocyanate leaching has not turned out very promising, perhaps you are thinking of thioures leaching. For some general discussion of thiocyanate see:https://www.911metallurgist.com/hydrometallurgy/t...
Thiocyanate leaching has not turned out very promising, perhaps you are thinking of thioures leaching. For some general discussion of thiocyanate see:https://www.911metallurgist.com/hydrometallurgy/t...
4
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1802
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Started by Japan Man
Hello Everyone, We are a small mining operation working out of Japan tying to maximize gold recovery with copper rich ore using cyanidation. In a previous cycle of cyanidation we ran with 800tons of dust (gold tailings) we recovered 1.3kilos of gol...
Hello Everyone, We are a small mining operation working out of Japan tying to maximize gold recovery with copper rich ore using cyanidation. In a previous cycle of cyanidation we ran with 800tons of dust (gold tailings) we recovered 1.3kilos of gol...
Last replied to by Jorge Quintanilla
Hello everyone:I had that problem years ago and I solved it in several ways at the same time.I had the CIP CIP CIC system, with modified ZADRA. The real problem was the copper build up in tailings dam...
Hello everyone:I had that problem years ago and I solved it in several ways at the same time.I had the CIP CIP CIC system, with modified ZADRA. The real problem was the copper build up in tailings dam...
4
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1048
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Started by Teggry
Hi, Due to costs and transport, stripping of undersized carbon is not feasible where I am. It gets buried. Would it be possible to place the carbon into an Acacia Reactor and strip the gold from it that way? (would that be similar to leaching gold f...
Hi, Due to costs and transport, stripping of undersized carbon is not feasible where I am. It gets buried. Would it be possible to place the carbon into an Acacia Reactor and strip the gold from it that way? (would that be similar to leaching gold f...
2
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1035
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Started by Alex Spynu
Hello! Does anybody know how distribute a loss of carbon in CIP(CIL) process?What part of carbon of total break does degradate in the leaching, transportation, screening, elution, thermal regeneration?
Hello! Does anybody know how distribute a loss of carbon in CIP(CIL) process?What part of carbon of total break does degradate in the leaching, transportation, screening, elution, thermal regeneration?
2
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1106
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Started by amressam
Hello I'm work in a mining company and use cyanide in the extraction process, I want an easy way to get rid of the cyanide resulting in tailing. Thank you
Hello I'm work in a mining company and use cyanide in the extraction process, I want an easy way to get rid of the cyanide resulting in tailing. Thank you
Last replied to by David
Hi https://www.911metallurgist.com/profile/ECD40/ sent this to me to give you. INCO Treatment of Tailings Pulps or SlurriesThe precious metals mining industry’s use of cyanide to extract precious ...
Hi https://www.911metallurgist.com/profile/ECD40/ sent this to me to give you. INCO Treatment of Tailings Pulps or SlurriesThe precious metals mining industry’s use of cyanide to extract precious ...
3
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1481
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Started by Jeffreybch
Hi, My name is Jeffrey, I manage a little benefitiation plant in Costa Rica. We concentrate artisanal tailings (gravity-flotation,which works well) and later we remove the gold (problem). We produce gravity concentrates in the order of 150-500 g...
Hi, My name is Jeffrey, I manage a little benefitiation plant in Costa Rica. We concentrate artisanal tailings (gravity-flotation,which works well) and later we remove the gold (problem). We produce gravity concentrates in the order of 150-500 g...
3
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845
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Started by oro
In a heap leach application of milled tailings collected from various small mining sites there is always a certain amount of debris (plant material, wood and leaves and plastic, sometimes a bit of grease / oil). I understand the carbonaceous mater...
In a heap leach application of milled tailings collected from various small mining sites there is always a certain amount of debris (plant material, wood and leaves and plastic, sometimes a bit of grease / oil). I understand the carbonaceous mater...
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One aspect which we ignore is the particle size and dry moisture content of the ore. you nees to dry the tailings ,reduce the size into powder and mix with lime. During your solution dosing, let the...