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Started by oro
I need to setup an alkaline drip for a 1 t/hr solids feed to a small CIP plant. What is the most practical method to do this considering the low solubility of hydrated lime? I was wanting to use a 55 gal plastic drum but realize 400-500 grams ...
I need to setup an alkaline drip for a 1 t/hr solids feed to a small CIP plant. What is the most practical method to do this considering the low solubility of hydrated lime? I was wanting to use a 55 gal plastic drum but realize 400-500 grams ...
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Started by Ninontrans
pleasei have a gold ore that has a high copper content 1.52%, Sulphur of 0.12percent, silver of around 102grams per ton, how do I go about recovering the gold in the ore. I tried panning but it was not effective.
pleasei have a gold ore that has a high copper content 1.52%, Sulphur of 0.12percent, silver of around 102grams per ton, how do I go about recovering the gold in the ore. I tried panning but it was not effective.
Last replied to by Ninontrans
Thanks a lot I will check it out
Thanks a lot I will check it out
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996
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Started by WYOMing Prospector
Have read several studies where it is known that citric acid will dissolve 15 of the rare earths into solution. Question I have is what liquid can I use with the citric acid for solution and then to precipitate them back out what is the best method...
Have read several studies where it is known that citric acid will dissolve 15 of the rare earths into solution. Question I have is what liquid can I use with the citric acid for solution and then to precipitate them back out what is the best method...
Last replied to by SmartDog
The normal (if there is such a thing with rare earths) is to use gravity and flotation to produce a concentrate, then use a multi stage leaching process to separate the RE's. The leaching stage is t...
The normal (if there is such a thing with rare earths) is to use gravity and flotation to produce a concentrate, then use a multi stage leaching process to separate the RE's. The leaching stage is t...
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1013
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Started by ManUtd67
Hi, I am looking for operating experiences for controlling and minimizing copper loading on activated carbon in a gold CIP circuit. The project under consideration is still in design phase. The ore has some copper associated with chalcopyrite whi...
Hi, I am looking for operating experiences for controlling and minimizing copper loading on activated carbon in a gold CIP circuit. The project under consideration is still in design phase. The ore has some copper associated with chalcopyrite whi...
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1191
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Started by Rahel John [closed]
CIL leaching...to know the amount of cyanide that can be consumed during leaching an ore contain 16% sulfur and less than 5000ppm copper
CIL leaching...to know the amount of cyanide that can be consumed during leaching an ore contain 16% sulfur and less than 5000ppm copper
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Started by simon@p [closed]
can ammonia be used as an alternative to remove copper from gold loaded carbon instead of cold cyanide wash
can ammonia be used as an alternative to remove copper from gold loaded carbon instead of cold cyanide wash
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Started by AJ [closed]
Good Morning all, Using a Zadra elution circuit at what temperature does a cold strip become a hot strip and what are the essential differences between the two.
Good Morning all, Using a Zadra elution circuit at what temperature does a cold strip become a hot strip and what are the essential differences between the two.
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728
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Started by graeme23miller [closed]
I am trying to source data on the conductivity of copper electrowinning electrolytes: Cu 30 - 50 g/L, H2SO4 150 - 180 g/L & 50 Celsius.
I am trying to source data on the conductivity of copper electrowinning electrolytes: Cu 30 - 50 g/L, H2SO4 150 - 180 g/L & 50 Celsius.
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952
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Started by ManUtd67 [closed]
Considering a gold processing plant that is processing ore that contains some copper (chalcopyrite). Copper in the ore is around 300-1000ppm. The flowsheet includes a gravity circuit and so expect the gravity concentrate to also contain elevated c...
Considering a gold processing plant that is processing ore that contains some copper (chalcopyrite). Copper in the ore is around 300-1000ppm. The flowsheet includes a gravity circuit and so expect the gravity concentrate to also contain elevated c...
Last replied to by Gene Cheeseman
Luckily, chalcopyrite is not very soluble in cyanide and its relatively low SG means it won't be in very high concentrations in the gravity concentrate. It's the other copper minerals you need to...
Luckily, chalcopyrite is not very soluble in cyanide and its relatively low SG means it won't be in very high concentrations in the gravity concentrate. It's the other copper minerals you need to...
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1088
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Started by Wadzanayi [closed]
Hello Process Engineers In a CIL circuit, does pre-aration to increase DO levels, always result in the benefits of reduced cyanide consumption improved gold recovery
Hello Process Engineers In a CIL circuit, does pre-aration to increase DO levels, always result in the benefits of reduced cyanide consumption improved gold recovery
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903
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Started by Wadzanayi [closed]
I hope that I find you well. I would like to know the differences in performance if any, between Norit and Coconut based hydrocarb activated carbon for adsorption in a CIL circuit. The major issue is the difference in the cost between the t...
I hope that I find you well. I would like to know the differences in performance if any, between Norit and Coconut based hydrocarb activated carbon for adsorption in a CIL circuit. The major issue is the difference in the cost between the t...
Last replied to by SmartDog
Every operation is different and no general answer will be always correct. The only way to know for sure is to do lab testing or even pilot testing.
Every operation is different and no general answer will be always correct. The only way to know for sure is to do lab testing or even pilot testing.
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1595
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Started by Seeker [closed]
What is the best chemical way to recover tin and lead separately from the solution containing chlorides of lead and tin? How to recover lead and tin separately from the solution containing chlorides of lead and tin through electrodeposition? Thanks...
What is the best chemical way to recover tin and lead separately from the solution containing chlorides of lead and tin? How to recover lead and tin separately from the solution containing chlorides of lead and tin through electrodeposition? Thanks...
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938
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Started by mashafaei [closed]
We have a copper mine, which combines copper sulfur and copper oxide, that copper oxide extracted using "HEAP LEACH" process . It is now the copper sulfur was remained in the "HEAP LEACH" with a concentration about 1-5%. My questions are: Is...
We have a copper mine, which combines copper sulfur and copper oxide, that copper oxide extracted using "HEAP LEACH" process . It is now the copper sulfur was remained in the "HEAP LEACH" with a concentration about 1-5%. My questions are: Is...
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1072
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Started by JPExit [closed]
Would there be a significant difference in Carbon Activity results if I use a Hot Plate rather than an Oven to dry carbon samples prior to Carbon Activity Determination Test?
Would there be a significant difference in Carbon Activity results if I use a Hot Plate rather than an Oven to dry carbon samples prior to Carbon Activity Determination Test?
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979
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Started by CA [closed]
Hello. We operate a small scale leach plant in a region where it is difficult to find hydrated lime for us in pH control. We tend to only have access to a milled lime ore (artisinal) that comes from local sources. We are dealing with a very acidi...
Hello. We operate a small scale leach plant in a region where it is difficult to find hydrated lime for us in pH control. We tend to only have access to a milled lime ore (artisinal) that comes from local sources. We are dealing with a very acidi...
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905
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Started by Praymore [closed]
What is the best mesh size of activated carbon to use for gold adsorption in a CIL/CIP circuit comparing 6*12 and 8*16 Carbon? Does the mesh size affect the desorption rate of gold?
What is the best mesh size of activated carbon to use for gold adsorption in a CIL/CIP circuit comparing 6*12 and 8*16 Carbon? Does the mesh size affect the desorption rate of gold?
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807
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Started by Millza79 [closed]
Hi All, for determining heap leach recoveries, is this the formula: [(Total PLS flow (m3) * PLS Au (ppm) * Solution SG) - (Total barren liquor flow (m3) * barren liquor Au (ppm) * Solution SG)] / (Total tonnes on heap leach * Head Au gr...
Hi All, for determining heap leach recoveries, is this the formula: [(Total PLS flow (m3) * PLS Au (ppm) * Solution SG) - (Total barren liquor flow (m3) * barren liquor Au (ppm) * Solution SG)] / (Total tonnes on heap leach * Head Au gr...
Last commented on by Millza79
Thankyou.
Thankyou.
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972
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Started by Millza79 [closed]
Does anyone have any papers or links on the metallurgical accounting for heap leach operations? I.e., where are sampling points (each solution flow, each lift etc), how are recoveries determined etc?
Does anyone have any papers or links on the metallurgical accounting for heap leach operations? I.e., where are sampling points (each solution flow, each lift etc), how are recoveries determined etc?
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938
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Started by Edson aman [closed]
In most cases leaching process is done using sodium cyanide due to its high activity while in adsorption the activated carbons work well when there are many calcium ions in the pulp therefore in other words it seems like not necessary using sodium ...
In most cases leaching process is done using sodium cyanide due to its high activity while in adsorption the activated carbons work well when there are many calcium ions in the pulp therefore in other words it seems like not necessary using sodium ...
Last replied to by SmartDog
Cyanide is the general descriptive term applied usually to sodium cyanide (NaCN). However, the early work in cyanidation was based on the use of potassium cyanide and strengths of solution as well as ...
Cyanide is the general descriptive term applied usually to sodium cyanide (NaCN). However, the early work in cyanidation was based on the use of potassium cyanide and strengths of solution as well as ...
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Started by simon@p [closed]
hellow, I have gold ore which contains high amount of copper. I have heard that apart from flotation I could use ammonia pre-treatment to reduce the amount of copper in the ore I have bottle rolling test so I'm asking for the procedures to do th...
hellow, I have gold ore which contains high amount of copper. I have heard that apart from flotation I could use ammonia pre-treatment to reduce the amount of copper in the ore I have bottle rolling test so I'm asking for the procedures to do th...
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953
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Started by jonas chihoyi [closed]
gentlemen assist me with initial cn and lime additions in a heap leach operation
gentlemen assist me with initial cn and lime additions in a heap leach operation
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996
VIEWS
Started by Jaime Jacob [closed]
Hello I need to modell a copper column leaching, the movement of solutions inside and the extracction of copper. Any could help me Thanks a lot
Hello I need to modell a copper column leaching, the movement of solutions inside and the extracction of copper. Any could help me Thanks a lot
Last replied to by SmartDog
Your main title was about heap leaching, while your actual words described column modelling. These are different things. That said, to model either one you will need to study Computation Fluid dyn...
Your main title was about heap leaching, while your actual words described column modelling. These are different things. That said, to model either one you will need to study Computation Fluid dyn...
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1059
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Started by vaheedghassemy [closed]
help please.I need fundamental information about solvent extraction of copper . i want to design a factory to produce 1000 kg/day copper cathode . cu in PLS is 2.5 gr/lit. please help me. thanks
help please.I need fundamental information about solvent extraction of copper . i want to design a factory to produce 1000 kg/day copper cathode . cu in PLS is 2.5 gr/lit. please help me. thanks
Last commented on by vaheedghassemy
thanks dear for your help.
thanks dear for your help.
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1061
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Started by Millza79 [closed]
Is there a particle size where agglomeration is NOT required prior to heap leaching? I am reading a testwork report, where the fine fraction (half inch) was agglomerated, but the coarse size fraction 92 inch) wasn't agglomerated.
Is there a particle size where agglomeration is NOT required prior to heap leaching? I am reading a testwork report, where the fine fraction (half inch) was agglomerated, but the coarse size fraction 92 inch) wasn't agglomerated.
Last replied to by SmartDog
A simple answer is that particle size and shape are two important parameters in optimizing heap permeability. Without agglomeration, fines clog spaces between larger ore particles in the ore bed, prev...
A simple answer is that particle size and shape are two important parameters in optimizing heap permeability. Without agglomeration, fines clog spaces between larger ore particles in the ore bed, prev...
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Started by viyana [closed]
hi we have hot filter cake (from zinc plant residuals) and it contains 1-2% Co and 12% manganese, i am going to recover cobalt by solvent extraction with D2EHPA, now, I need some references about design of solvent extraction plant, Is there anyone t...
hi we have hot filter cake (from zinc plant residuals) and it contains 1-2% Co and 12% manganese, i am going to recover cobalt by solvent extraction with D2EHPA, now, I need some references about design of solvent extraction plant, Is there anyone t...
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942
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Started by ksherren [closed]
I am looking for information from anyone who is using thiourea in conjunction with NaCN and NaOH in their Au/Ag elution circuits. We are experiencing problems with eluting Ag and I am wondering if Thiourea could be the problem? If not, any thoughts o...
I am looking for information from anyone who is using thiourea in conjunction with NaCN and NaOH in their Au/Ag elution circuits. We are experiencing problems with eluting Ag and I am wondering if Thiourea could be the problem? If not, any thoughts o...
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990
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Started by Seeker [closed]
I need a reaction vessel to remove tin, lead and zinc impurities from copper powder using HCL purity 35%. The temp. can reach up to 100°C or even more during reaction. Kindly suggest what grade of steel or some other metal can I use for this vessel?...
I need a reaction vessel to remove tin, lead and zinc impurities from copper powder using HCL purity 35%. The temp. can reach up to 100°C or even more during reaction. Kindly suggest what grade of steel or some other metal can I use for this vessel?...
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844
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Started by kahonde [closed]
what is the use of Aluminium sulphate and Sodium sulphate in vat leaching or leaching of ores.
what is the use of Aluminium sulphate and Sodium sulphate in vat leaching or leaching of ores.
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Started by 14500477mada [closed]
Discuss the Procedures of; 1.Carbon-in-Pulp Extraction 2. Carbon screening and washing 3. Stripping
Discuss the Procedures of; 1.Carbon-in-Pulp Extraction 2. Carbon screening and washing 3. Stripping
Last replied to by Jorge
Follow the links below, https://www.911metallurgist.com/blog/gold-cil-process-explained
Follow the links below, https://www.911metallurgist.com/blog/gold-cil-process-explained
Carbon-In-Pulp Process Exampleshttps://www.911metallurgist.com/carbon-pulp-...
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Update: I collected some samples from the mining area. There is no visible gold in the ore. However I tossed a few chunks into a fire pit and the next morning there were significant gold color specs. ...