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1382
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Started by Guelb22
We have high grade deposit and traditional mining. W e have leached gold into cyanide solution but due to cost of electrowinning cell and power unavailibility in the desert we get stuck, any idea how to recover that gold from the solution without ele...
We have high grade deposit and traditional mining. W e have leached gold into cyanide solution but due to cost of electrowinning cell and power unavailibility in the desert we get stuck, any idea how to recover that gold from the solution without ele...
4
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1394
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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...
2
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1255
VIEWS
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(-...
3
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1249
VIEWS
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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1904
VIEWS
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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1365
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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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1746
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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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1398
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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1143
VIEWS
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 Mike
Thiocyanate leaching has not turned out very promising, perhaps you are thinking of thioures leaching. For some general discussion of thiocyanate see:https://redesign.911metallurgist.com/hydrometallu...
Thiocyanate leaching has not turned out very promising, perhaps you are thinking of thioures leaching. For some general discussion of thiocyanate see:https://redesign.911metallurgist.com/hydrometallu...
4
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2096
VIEWS
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...
2
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2280
VIEWS
Started by Charlie
Hello everyone, in any gold or silver leach plants: 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 conditioning residence time? Did you ever add peroxide, where was it a...
Hello everyone, in any gold or silver leach plants: 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 conditioning residence time? Did you ever add peroxide, where was it a...
4
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1325
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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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1313
VIEWS
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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1387
VIEWS
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://redesign.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 prec...
Hi https://redesign.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 prec...
3
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1780
VIEWS
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...
4
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1333
VIEWS
Started by epiphane
GOOD EVENING TO YOU; I WOULD LIKE TO KNOW IF THERE IS A FORMULA THAT ALLOWS CALCULATING THE CARBON TRANSFER TIME. HERE ARE DIFFERENT PARAMETERS:SETPOINT 21G / LTRANSFER PUMP FLOW: 60L / SVOLUME OF THE TANK: 4000M3.
GOOD EVENING TO YOU; I WOULD LIKE TO KNOW IF THERE IS A FORMULA THAT ALLOWS CALCULATING THE CARBON TRANSFER TIME. HERE ARE DIFFERENT PARAMETERS:SETPOINT 21G / LTRANSFER PUMP FLOW: 60L / SVOLUME OF THE TANK: 4000M3.
3
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1127
VIEWS
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...
1
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1363
VIEWS
Started by epiphane
Hello sir; I need your help. I would like to know what are the different factors that can cause a bad transfer of carbon in the CIL circuit. thank you!!!!!
Hello sir; I need your help. I would like to know what are the different factors that can cause a bad transfer of carbon in the CIL circuit. thank you!!!!!
Last replied to by David
Until somebody smart comes along, please read: https://redesign.911metallurgist.com/blog/gold-circuit-carbon-sampling-inventory-movement https://redesign.911metallurgist.com/hydrometallurgy/carbon-m...
Until somebody smart comes along, please read: https://redesign.911metallurgist.com/blog/gold-circuit-carbon-sampling-inventory-movement https://redesign.911metallurgist.com/hydrometallurgy/carbon-m...
1
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1244
VIEWS
Started by Collin Amonde
Good day All Could anyone help me to understand why leach tanks agitators break/snap off at the flanges where the agitator is bolt on. In some cases the bolts broke off or the agitator snap at the part of the flange of the agitator.
Good day All Could anyone help me to understand why leach tanks agitators break/snap off at the flanges where the agitator is bolt on. In some cases the bolts broke off or the agitator snap at the part of the flange of the agitator.
Last commented on by Collin Amonde
Jorge, thank you very much. We will definitely look into the above points
Jorge, thank you very much. We will definitely look into the above points
4
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1329
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Started by nagokumbirai@yahoo.co.uk
Am running a CIP plant regrinding a dump from stamp mills. Ores that make up the dump are from various areas, challenge is continuous settling of my leach tanks. How can I solve the problem of tank situation?
Am running a CIP plant regrinding a dump from stamp mills. Ores that make up the dump are from various areas, challenge is continuous settling of my leach tanks. How can I solve the problem of tank situation?
5
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1305
VIEWS
Started by Munyabrwn
Hie Engineers,My name is Munga, I have a question based on what i am experiencing on the ground. I have gold ore with high copper content.My question is how can i suppress the copper during leaching so as to reduce my cyanide consumption? I hope to...
Hie Engineers,My name is Munga, I have a question based on what i am experiencing on the ground. I have gold ore with high copper content.My question is how can i suppress the copper during leaching so as to reduce my cyanide consumption? I hope to...
2
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1812
VIEWS
Started by Mpiga
hello friends,can some one help me a formula to calculate the capacity( in tons) of the round VAT leaching tank,also what are the indicators to show that the carbon is full,that need to be replaced? Thanks in advance.
hello friends,can some one help me a formula to calculate the capacity( in tons) of the round VAT leaching tank,also what are the indicators to show that the carbon is full,that need to be replaced? Thanks in advance.
Last replied to by Alex Spynu
For CIP and CIL tanks you can take operating volume about 90-95% of overall volume. Nobody determine is it full carbon or not by any indicators. There are precise time and volume when you should tr...
For CIP and CIL tanks you can take operating volume about 90-95% of overall volume. Nobody determine is it full carbon or not by any indicators. There are precise time and volume when you should tr...
2
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3022
VIEWS
Started by epiphane
Hello to you; I'm working on optimizing the carbon concentration in CIL tanks, my question is: HOW CAN SAMPLING IN CIL TANKS, AND DETERMINE CONCENTRATION?
Hello to you; I'm working on optimizing the carbon concentration in CIL tanks, my question is: HOW CAN SAMPLING IN CIL TANKS, AND DETERMINE CONCENTRATION?
Last replied to by Alex Spynu
There is "dip test" for determining how much carbon you have in tank. Method is how describe above by Todd H.
There is "dip test" for determining how much carbon you have in tank. Method is how describe above by Todd H.
2
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1250
VIEWS
Started by antz001
I would like to determine and/or calculate accurate the outflows for a gold heap leach?
I would like to determine and/or calculate accurate the outflows for a gold heap leach?
1
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1122
VIEWS
Started by Filip_D
Hello, I am doing research on hydrometallurgical metal recovery (as well as more conventional metal recycling) within the industry and I hit a wall. I am able to identify technologies employed, as well as the amount of processed materials in both ar...
Hello, I am doing research on hydrometallurgical metal recovery (as well as more conventional metal recycling) within the industry and I hit a wall. I am able to identify technologies employed, as well as the amount of processed materials in both ar...
3
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1383
VIEWS
Started by tgraham@minsep.com.au
Hi I am looking for advice on creating a good flowsheet for a gold tailings recovery plant. I am particularly interested in the best technology for splitting particle size fractions i.e. using fine wet screens vs cyclones, attrition cells. Thanks f...
Hi I am looking for advice on creating a good flowsheet for a gold tailings recovery plant. I am particularly interested in the best technology for splitting particle size fractions i.e. using fine wet screens vs cyclones, attrition cells. Thanks f...
1
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1204
VIEWS
Started by Stephan47
Hi everyone!I need any information on dealing with a problem of high oxygen comsumption in heap leaching operation due to the presens of oxygen-consuming minerals. Could you please provide me some practical examples or references where I can find cl...
Hi everyone!I need any information on dealing with a problem of high oxygen comsumption in heap leaching operation due to the presens of oxygen-consuming minerals. Could you please provide me some practical examples or references where I can find cl...
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Hello, maybe you can advise me. I am grinding fine using sod. cyan. Since I don't have a vat, I am using 5 gallon buckets, mixed and forced air. I started with 200 gram cyan. for 20 lbs ground fine or...