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772
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Started by Eng. Cosmas Wambura
Hello Friends, some one help me the way to obtain the tonnage of round vat tank; As i know; Vol. = (pi*D²*Height)/4 To obtain mass , i use Density = mass/volume Now; if this formula is correct, what is the density of raw ore? Else; if it`s not...
Hello Friends, some one help me the way to obtain the tonnage of round vat tank; As i know; Vol. = (pi*D²*Height)/4 To obtain mass , i use Density = mass/volume Now; if this formula is correct, what is the density of raw ore? Else; if it`s not...
2
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661
VIEWS
Started by OGUZTURE
Hello dear friends, Proffessors We have a factory that recovers precious metals from electronic waste. Here we first shred the motherboards of electronic scraps. And we separate the parts. We throw the precious metals in a furnace and melt them. We ...
Hello dear friends, Proffessors We have a factory that recovers precious metals from electronic waste. Here we first shred the motherboards of electronic scraps. And we separate the parts. We throw the precious metals in a furnace and melt them. We ...
4
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900
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Started by Eng. Cosmas Wambura
Controlling Copper is a big problem at my site, so I need help on which reagent can I use in the cyanidation of gold. Which reagent can I apply to control Copper in old vat leaching?
Controlling Copper is a big problem at my site, so I need help on which reagent can I use in the cyanidation of gold. Which reagent can I apply to control Copper in old vat leaching?
2
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583
VIEWS
Started by idahalen
I am currently researching Nickel hydrometallurgy and I am looking to understand the hazards on a HPAL circuit, specifically the Fleaters and Autoclaves. I understand that under certain conditions autoclaves can explode but I do not see how this ca...
I am currently researching Nickel hydrometallurgy and I am looking to understand the hazards on a HPAL circuit, specifically the Fleaters and Autoclaves. I understand that under certain conditions autoclaves can explode but I do not see how this ca...
Last replied to by idahalen
belated thanks SmartDog. I guess the hint is the presence of safety valves. I have modelled a deflagration at operating pressures at varying free-volumes - quite significant collateral damage. T...
belated thanks SmartDog. I guess the hint is the presence of safety valves. I have modelled a deflagration at operating pressures at varying free-volumes - quite significant collateral damage. T...
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615
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4
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773
VIEWS
Started by pz
Hi everyone. I wonder how is oxidizing gas (O2/air) flow rate is calculated for the atmospheric cyanide leach. I have experience with pressure oxidation of sulfides. The calculation method is very straightforward. First – calculate stoichiometric ...
Hi everyone. I wonder how is oxidizing gas (O2/air) flow rate is calculated for the atmospheric cyanide leach. I have experience with pressure oxidation of sulfides. The calculation method is very straightforward. First – calculate stoichiometric ...
Last commented on by Mike
Depends on tank size, particle size, solids concentration, agitator size, agitator blad configuration, and agitator transmission/belting. Also wether you are trying for high shear or low shear mixing...
Depends on tank size, particle size, solids concentration, agitator size, agitator blad configuration, and agitator transmission/belting. Also wether you are trying for high shear or low shear mixing...
1
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605
VIEWS
Started by saeidar
Hi everyone. I want to remove Strontium from barite ore. I would appreciate if you help me in this regard.
Hi everyone. I want to remove Strontium from barite ore. I would appreciate if you help me in this regard.
Last replied to by Wieslaw Wodecki
Dzień dobry. Jaki minerał tworzy Sr w tym barycie i ile go tam jest. Pozdrawiam Wiesław
Dzień dobry. Jaki minerał tworzy Sr w tym barycie i ile go tam jest. Pozdrawiam Wiesław
1
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15236
VIEWS
Started by simon@p
I would like to ask about the state of gold in eluant and it's chemical formula if any
I would like to ask about the state of gold in eluant and it's chemical formula if any
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671
VIEWS
Started by graeme23miller
i am looking for anyone with experience in selecting materials of construction in high concentration chloride brine. we are doing a class 5 feasibility study without any corrosion test work. as a result the selection of materials are generally non-...
i am looking for anyone with experience in selecting materials of construction in high concentration chloride brine. we are doing a class 5 feasibility study without any corrosion test work. as a result the selection of materials are generally non-...
Last replied to by Mike
Some of it comes around to the volume of material you will be handling on a hourly and daily basis. There are some ootb thoughts that can be used if proper care and thought is used. First though j...
Some of it comes around to the volume of material you will be handling on a hourly and daily basis. There are some ootb thoughts that can be used if proper care and thought is used. First though j...
3
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727
VIEWS
Started by ManUtd67
What are the best options to prevent build up of sticky material in a drum agglomerator. This is an acid agglomerator. Build-up of a ring of material occurs part way down the agglomerator between the acid spray pipe and the water spray pipe. (See...
What are the best options to prevent build up of sticky material in a drum agglomerator. This is an acid agglomerator. Build-up of a ring of material occurs part way down the agglomerator between the acid spray pipe and the water spray pipe. (See...
Last replied to by graeme23miller
from the look of your agglomerator the water addition is too high=> very sticky materials and build up. this is due to the moisture addition being at or even slightly above the material max stickin...
from the look of your agglomerator the water addition is too high=> very sticky materials and build up. this is due to the moisture addition being at or even slightly above the material max stickin...
1
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664
VIEWS
Started by ecublens
Hi guys, what is the difference between activated carbon adsorption and zinc cementation (merrill crowe)? How are these methods selected in a newly established gold enrichment facility? Thank you
Hi guys, what is the difference between activated carbon adsorption and zinc cementation (merrill crowe)? How are these methods selected in a newly established gold enrichment facility? Thank you
1
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677
VIEWS
Started by Austin Muvimi
Hi guys. May you please school me on how to culculate the optimum mechanical agitator rotation speed in gold CIP plants taking into consideration the tank size and pulp density Thanks in advance
Hi guys. May you please school me on how to culculate the optimum mechanical agitator rotation speed in gold CIP plants taking into consideration the tank size and pulp density Thanks in advance
Last replied to by Mike
The normal process is to use the coarsest particle size expected and then determining the minimal settling velocity for that size given the pulp specific gravity and partical specifc gravity. This g...
The normal process is to use the coarsest particle size expected and then determining the minimal settling velocity for that size given the pulp specific gravity and partical specifc gravity. This g...
3
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874
VIEWS
Started by CharlieAlAfensh
There is a solution that contains sodium chloride and potassium chloride, and we want to dissolve the largest possible amount of potassium chloride in the solution
There is a solution that contains sodium chloride and potassium chloride, and we want to dissolve the largest possible amount of potassium chloride in the solution
1
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652
VIEWS
Started by awunderl
Looking for any resources or research on chalcopyrite leaching for recovery vs particle size. Looking to see the effect of different particle size distributions on a copper recovery curve for run of mine material. Focusing on larger size fraction...
Looking for any resources or research on chalcopyrite leaching for recovery vs particle size. Looking to see the effect of different particle size distributions on a copper recovery curve for run of mine material. Focusing on larger size fraction...
4
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903
VIEWS
Started by Fahmy
Hi guys, I’d like to know what does the blue color indicate in the barren solution from VAT leaching, plus excessive dropping of cyanide concentration, I understand this occurs from the presence of higher amounts of other metals in the ore, but I d...
Hi guys, I’d like to know what does the blue color indicate in the barren solution from VAT leaching, plus excessive dropping of cyanide concentration, I understand this occurs from the presence of higher amounts of other metals in the ore, but I d...
1
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704
VIEWS
Started by Crisady
Can you tank gold amalgamation tailings straight to the regrind and the to cip without passing through vat leach and still achieve the same recovery.Iam just brainstorming on ways to cut costs without losing my gold.Can someone assist from experience...
Can you tank gold amalgamation tailings straight to the regrind and the to cip without passing through vat leach and still achieve the same recovery.Iam just brainstorming on ways to cut costs without losing my gold.Can someone assist from experience...
2
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1527
VIEWS
Started by ca1
Hello, We operate a small carbon in pulp plant without thermal reactivation abilities. We would like to find solutions to recover our process solution after it has been discharged to the tailings. Are anionic flocculants considered to be pore b...
Hello, We operate a small carbon in pulp plant without thermal reactivation abilities. We would like to find solutions to recover our process solution after it has been discharged to the tailings. Are anionic flocculants considered to be pore b...
Last replied to by Mike
As operations move to closed water circuits, matching the right flocculent to the leach circuit is an important issue. The chemistry of the whole process can become rather complex. While the flocculen...
As operations move to closed water circuits, matching the right flocculent to the leach circuit is an important issue. The chemistry of the whole process can become rather complex. While the flocculen...
2
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932
VIEWS
Started by DY
Hello, All I can't find optimal solid / liquid ratio for processes intensive gold cyanidation at Consep Acacia unit, Gekko Inline Leach Reactor and Sepro Leach Reactor. Where I can find this information? May be somebody know this information.
Hello, All I can't find optimal solid / liquid ratio for processes intensive gold cyanidation at Consep Acacia unit, Gekko Inline Leach Reactor and Sepro Leach Reactor. Where I can find this information? May be somebody know this information.
2
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993
VIEWS
Started by Seeker
I want to recover ruthenium metal from ruthenium hydroxide. Ruthenium hydroxide reaction with nitric acid gives ruthenium crystals and some part of it is dissolved in nitric acid. Would it be correct if I first completely dissolve ruthenium hydroxide...
I want to recover ruthenium metal from ruthenium hydroxide. Ruthenium hydroxide reaction with nitric acid gives ruthenium crystals and some part of it is dissolved in nitric acid. Would it be correct if I first completely dissolve ruthenium hydroxide...
1
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770
VIEWS
Started by Millza7979
Are coarse bottle roll tests a good way of simulating column leach tests? Do they tend to get the same gold recoveries?
Are coarse bottle roll tests a good way of simulating column leach tests? Do they tend to get the same gold recoveries?
1
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1587
VIEWS
Started by jmambsu
In CIL/CIP, what is the minimum density difference (carbon vs. pulp density) where the carbon will start to settle? And the limits of agitation on carbon settling?
In CIL/CIP, what is the minimum density difference (carbon vs. pulp density) where the carbon will start to settle? And the limits of agitation on carbon settling?
7
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768
VIEWS
Started by Seeker
Somebody, please help me! I want to know about the recovery of precious metals from the spent catalyst used in the manufacturing of lubricants. Thanks in advance!
Somebody, please help me! I want to know about the recovery of precious metals from the spent catalyst used in the manufacturing of lubricants. Thanks in advance!
1
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698
VIEWS
Started by John KK
Hello , Is mineral processing industry ready for industry 4.0 , smart plants that can respond in real time or close to real time and use machine learning. It could be more productive ,fun and fascinating to see this in mineral processing. 😉
Hello , Is mineral processing industry ready for industry 4.0 , smart plants that can respond in real time or close to real time and use machine learning. It could be more productive ,fun and fascinating to see this in mineral processing. 😉
1
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739
VIEWS
Started by Austin Muvimi
Can someone please help me on how to calculate leach residence time, adsorption residence time and pulp retention time in CIP
Can someone please help me on how to calculate leach residence time, adsorption residence time and pulp retention time in CIP
Last replied to by Mike
Is this for an existing operation where you want to know what is going on or for a new operation? If it is an existing operation an approximation can be made by knowing the flow rates and the volumes...
Is this for an existing operation where you want to know what is going on or for a new operation? If it is an existing operation an approximation can be made by knowing the flow rates and the volumes...
1
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800
VIEWS
Started by Han
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fire ass...
First of all,for the processing of gold and tellurium ores,how exactly does the pos-roasting(calsine ores contain % 60- 62 Fe ) process work,what is the way to obtain tellurium. Second,which do you prefer for chemical analysis,aquea regea or fire ass...
1
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797
VIEWS
Started by Ceverett
Has anybody tried using a peristaltic pump to transport carbon using little to no water? Our concern is that the carbon will grind against itself and fracture into smaller pieces that make be lost to the undersize of our tailing screen.
Has anybody tried using a peristaltic pump to transport carbon using little to no water? Our concern is that the carbon will grind against itself and fracture into smaller pieces that make be lost to the undersize of our tailing screen.
Last replied to by Mike
The issue of carbon degrading due to pumping at high solids concentrations is an issue regardless of the type of pump. Centrifugal pumps can exacerbate this with the impellor and additional grinding...
The issue of carbon degrading due to pumping at high solids concentrations is an issue regardless of the type of pump. Centrifugal pumps can exacerbate this with the impellor and additional grinding...
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875
VIEWS
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796
VIEWS
Started by martie
Hello! Can anyone please explain to me why the presence of titanium is a challenge during the separation of rare earth elements by SX?
Hello! Can anyone please explain to me why the presence of titanium is a challenge during the separation of rare earth elements by SX?
1
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834
VIEWS
Started by Austin Muvimi
Hi guys. I want to start Vat leaching. Bottle roll results are Au 2.6g/t and Cu 15.2g/t. Is there a method of calculating the amount of cyanide to be mixed in the make-up tank according to the required cyanide strength in relation to the amount of wa...
Hi guys. I want to start Vat leaching. Bottle roll results are Au 2.6g/t and Cu 15.2g/t. Is there a method of calculating the amount of cyanide to be mixed in the make-up tank according to the required cyanide strength in relation to the amount of wa...
1
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912
VIEWS
Started by alonso771
Hi everyone, I'm looking for a paper that is mentioned on this website, https://redesign.911metallurgist.com/hydrochloric-acid-copper-leaching/ The paper is: Harvey, W. W. and Dudas, F. O., “Hydrochloric Acid Leach Processes for Copper Concentr...
Hi everyone, I'm looking for a paper that is mentioned on this website, https://redesign.911metallurgist.com/hydrochloric-acid-copper-leaching/ The paper is: Harvey, W. W. and Dudas, F. O., “Hydrochloric Acid Leach Processes for Copper Concentr...
Last replied to by Mike
The link you posted IS the preprint. Alternatively you can download it form https://www.onemine.org (charges an access fee).
The link you posted IS the preprint. Alternatively you can download it form https://www.onemine.org (charges an access fee).
1
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913
VIEWS
Started by Mining Mogul
Hello im leaching my sands with a grade of 2.25. Head has been reporting above 2.83g/t for more than 7 days without without reducing, the tail is 0.02 and 0.00 in some days. Cyanide strength is at 0.2%. What do I do to reduce the number of days leac...
Hello im leaching my sands with a grade of 2.25. Head has been reporting above 2.83g/t for more than 7 days without without reducing, the tail is 0.02 and 0.00 in some days. Cyanide strength is at 0.2%. What do I do to reduce the number of days leac...
Last replied to by Mike
What does your test work show? Compare how you are operating against the lab & pilot testing. You did do lab & pilot testing didn't you?
What does your test work show? Compare how you are operating against the lab & pilot testing. You did do lab & pilot testing didn't you?
16
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1118
VIEWS
Started by Philipo
Hello Guys;I work at a CIP Gold processing plant. Currently the CIP tank has a problem with the slurry flow. There are 9 tanks, 2 leaching and 7 adsorption. Slurry from some tanks donot flow to the next tank, like from tank#7 to tank#8. Besides the d...
Hello Guys;I work at a CIP Gold processing plant. Currently the CIP tank has a problem with the slurry flow. There are 9 tanks, 2 leaching and 7 adsorption. Slurry from some tanks donot flow to the next tank, like from tank#7 to tank#8. Besides the d...
Last replied to by rob riggir
Hi Philipo, Just a further comment on tank agitators; Tank agitators should be designed to fully suspend the slurry in the tank by themselves and also to re-suspend settled solids after a power supp...
Hi Philipo, Just a further comment on tank agitators; Tank agitators should be designed to fully suspend the slurry in the tank by themselves and also to re-suspend settled solids after a power supp...
1
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854
VIEWS
Started by martie
Hello, I am undertaking a study on the dry digestion of high silica slags from the electric arc furnace. Does anyone have any knowledge on the impact of having a major amorphous component in the slag on the performance of dry digestion/ leaching? Or ...
Hello, I am undertaking a study on the dry digestion of high silica slags from the electric arc furnace. Does anyone have any knowledge on the impact of having a major amorphous component in the slag on the performance of dry digestion/ leaching? Or ...
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