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1106
VIEWS
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...
5
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2170
VIEWS
Started by Wadzanayi
I am currently working on a project to replace or find a cheaper alternative to Leach Aid during the intensive cyanidation of gold concentrates (Au 500-3,000 g/t, Ag 100-5,000 g/t).The intensive leaching of the gold concentrates is currently being ...
I am currently working on a project to replace or find a cheaper alternative to Leach Aid during the intensive cyanidation of gold concentrates (Au 500-3,000 g/t, Ag 100-5,000 g/t).The intensive leaching of the gold concentrates is currently being ...
Last replied to by Gene Cheeseman
Hi Bobin, We are currently doing an evaluation of our current practice of using peroxide and are considering switching to SeproLeach as well. We did four bottle rolls comparing oxygen, air, peroxid...
Hi Bobin, We are currently doing an evaluation of our current practice of using peroxide and are considering switching to SeproLeach as well. We did four bottle rolls comparing oxygen, air, peroxid...
2
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1924
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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1050
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.
1
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1082
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://www.911metallurgist.com/blog/gold-circuit-carbon-sampling-inventory-movement https://www.911metallurgist.com/hydrometallurgy/carbon-movement-st...
Until somebody smart comes along, please read: https://www.911metallurgist.com/blog/gold-circuit-carbon-sampling-inventory-movement https://www.911metallurgist.com/hydrometallurgy/carbon-movement-st...
1
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940
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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1051
VIEWS
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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1023
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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1532
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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1845
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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960
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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842
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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1103
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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912
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...
1
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935
VIEWS
Started by hasliclimber
Hello everybody. I’m working in the probably smallest zinc facility of the world… We do Zn recycling from fly ash of an incineration plant, means 100% secondary input. The process is like this: leaching of fly ash with HCL > Cementation with Z...
Hello everybody. I’m working in the probably smallest zinc facility of the world… We do Zn recycling from fly ash of an incineration plant, means 100% secondary input. The process is like this: leaching of fly ash with HCL > Cementation with Z...
Last commented on by hasliclimber
Hi Justin. Thanks for your quick answer! 1) No. The NaOH is added in the mixer directly. I will have a look on this idea! 2) Yes. Iron content is around 2 mg/L by entering the SX. 3) Yes we do. Moreo...
Hi Justin. Thanks for your quick answer! 1) No. The NaOH is added in the mixer directly. I will have a look on this idea! 2) Yes. Iron content is around 2 mg/L by entering the SX. 3) Yes we do. Moreo...
2
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1075
VIEWS
Started by jovanifirebird
hi guys. i work in a gold processing plant. we are facing with some issues. carbon started to go down while density was high( 46%). at the top, carbon is very less, while at the bottom, its high. in my point of view carbon can only go down when den...
hi guys. i work in a gold processing plant. we are facing with some issues. carbon started to go down while density was high( 46%). at the top, carbon is very less, while at the bottom, its high. in my point of view carbon can only go down when den...
Last commented on by jovanifirebird
Hi Rahil. Thanks for the reply. Definitely agree with you. The tanks are homoginized well. Density at the top and down the tanks are same. 46-47%. Yet most of the carbon is still down. Carbon is not ...
Hi Rahil. Thanks for the reply. Definitely agree with you. The tanks are homoginized well. Density at the top and down the tanks are same. 46-47%. Yet most of the carbon is still down. Carbon is not ...
4
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1017
VIEWS
Started by Mpiga
Hi, i am currently operating a vat leaching. The soil sample results was 6 ppm of Au and 8579 ppm of Cu. After running for two days the solution showed the following results: Cu 725 ppm and 2.53 ppm. The carbon samples result showed Au 544 ppm and Cu...
Hi, i am currently operating a vat leaching. The soil sample results was 6 ppm of Au and 8579 ppm of Cu. After running for two days the solution showed the following results: Cu 725 ppm and 2.53 ppm. The carbon samples result showed Au 544 ppm and Cu...
2
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1178
VIEWS
Started by HKen Erno
Hello dear metallurgists! I will be gratefull if you help please, to find how to optimize the consumption of reagents such as water, cyanide, soda cautic and leach aid in a plan of intensive leach with a tonnage of 12 tons of concentrates. Thank yo...
Hello dear metallurgists! I will be gratefull if you help please, to find how to optimize the consumption of reagents such as water, cyanide, soda cautic and leach aid in a plan of intensive leach with a tonnage of 12 tons of concentrates. Thank yo...
Last replied to by GregRasmussen
Hi HKen Erno, Can you tell me about the ILR equipment you are working with. The ILR supplied by Gekko does not require Leach Aid. Is this a gravity or flotation concentrate? Here are some guidel...
Hi HKen Erno, Can you tell me about the ILR equipment you are working with. The ILR supplied by Gekko does not require Leach Aid. Is this a gravity or flotation concentrate? Here are some guidel...
0
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843
VIEWS
Started by sherafat71
Hi cold beta purification process is remove cobalt from zinc sulphate solution by 1-nitroso2-naphthol or alfanitroso betanaphthol. in this process organic in solution remove by charcoal but organic compound exist in solution yet that effect in elect...
Hi cold beta purification process is remove cobalt from zinc sulphate solution by 1-nitroso2-naphthol or alfanitroso betanaphthol. in this process organic in solution remove by charcoal but organic compound exist in solution yet that effect in elect...
1
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971
VIEWS
Started by Sikini Nyakisinda
Hello fello Metallurgist, i am facing one critical problem in our Process Plant though we have very poor grinding manual due to absence of liners and lifters to be replaced in the Mill as well as Pebble crusher for recycled scats and Cyclone Cluster ...
Hello fello Metallurgist, i am facing one critical problem in our Process Plant though we have very poor grinding manual due to absence of liners and lifters to be replaced in the Mill as well as Pebble crusher for recycled scats and Cyclone Cluster ...
1
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1111
VIEWS
Started by epiphane
HelloI want to study on the efficiency of the transfer of carbon inter tank at the level of the CIL. What are the different settings I can perform to have concentrations conforming to the set-point?
HelloI want to study on the efficiency of the transfer of carbon inter tank at the level of the CIL. What are the different settings I can perform to have concentrations conforming to the set-point?
2
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1162
VIEWS
Started by Philibert
I have been leaching gold ore which have also copper and Silver by using carbon in leach (CIC) leaching method. when i take pregnant carbon to elution at the end i found large amount of copper and silver, this means cyanide also dissolved silver and ...
I have been leaching gold ore which have also copper and Silver by using carbon in leach (CIC) leaching method. when i take pregnant carbon to elution at the end i found large amount of copper and silver, this means cyanide also dissolved silver and ...
1
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1130
VIEWS
Started by Ron G
I read David's excellent article Jan-2017 on various methods of gold recovery from cyanide leach here: https://www.911metallurgist.com/cyanide-chemistry-gold-extraction/ I am a gold electroplater and was particularly interested in the cuprous ion...
I read David's excellent article Jan-2017 on various methods of gold recovery from cyanide leach here: https://www.911metallurgist.com/cyanide-chemistry-gold-extraction/ I am a gold electroplater and was particularly interested in the cuprous ion...
4
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1345
VIEWS
Started by Trajork
I recently read that sodium thiosulfate can be used for gold and silver leaching in much the same way as cyanide, but with no worries about toxicity. This intrigues me: aqua regia is a pain to work with, and cyanide is too toxic for an amateur, but t...
I recently read that sodium thiosulfate can be used for gold and silver leaching in much the same way as cyanide, but with no worries about toxicity. This intrigues me: aqua regia is a pain to work with, and cyanide is too toxic for an amateur, but t...
1
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997
VIEWS
Started by Samuel Trindade
Dear All, I conducted some carbon activity tests but I'd like to test the desorption capacity of carbon from different suppliers. Could you guys help-me how to do that? Is there any procedure? Thank you in advance!
Dear All, I conducted some carbon activity tests but I'd like to test the desorption capacity of carbon from different suppliers. Could you guys help-me how to do that? Is there any procedure? Thank you in advance!
1
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922
VIEWS
Started by 15uzu
do any one have any useful information about extraction of yttrium from xenotime
do any one have any useful information about extraction of yttrium from xenotime
Last replied to by Cyril Bourget
May I know the origin and composition of the xenotime ore as well as the name of the company that owns the project ? Are we talking about leaching and/or solvent extraction of yttrium ?
May I know the origin and composition of the xenotime ore as well as the name of the company that owns the project ? Are we talking about leaching and/or solvent extraction of yttrium ?
4
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1374
VIEWS
Started by Adimulu
Dear All We running gold plant (CIL) we have a problem during GIC end month inventory we always get 15-20 unaccounted gain or loss which is very difficult .The gold is hosted as free gold by quartz-sulfide vein in altered microgranite, with minor go...
Dear All We running gold plant (CIL) we have a problem during GIC end month inventory we always get 15-20 unaccounted gain or loss which is very difficult .The gold is hosted as free gold by quartz-sulfide vein in altered microgranite, with minor go...
1
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797
VIEWS
Started by Lina Avila
Hi i would like to ask about which material should i use for this application is it better Titanium or can I go with 17-4 PH
Hi i would like to ask about which material should i use for this application is it better Titanium or can I go with 17-4 PH
1
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1089
VIEWS
Started by Philibert
I would like to thanks for all members for technical support that they give to every question I want to start a new Vant leaching plant with one leaching tank and have a barren tank of 2000 liter, i would like to to operate the process at 900ppm of ...
I would like to thanks for all members for technical support that they give to every question I want to start a new Vant leaching plant with one leaching tank and have a barren tank of 2000 liter, i would like to to operate the process at 900ppm of ...
1
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1406
VIEWS
Started by jtval
Hi About POX for treatment of refractory gold ore, considering that using only one autoclave can decrease the availability of the process plant, how many autoclaves should be used in POX process? Thanks for the help.
Hi About POX for treatment of refractory gold ore, considering that using only one autoclave can decrease the availability of the process plant, how many autoclaves should be used in POX process? Thanks for the help.
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