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Started by Fuloshixwa
Good day everyone, I wanted to know what method could possibly use to determine my Dense Medium cut point. While we are that, I would also like to know of any method used to determine your ore to dense medium ratio. Thank you.
Good day everyone, I wanted to know what method could possibly use to determine my Dense Medium cut point. While we are that, I would also like to know of any method used to determine your ore to dense medium ratio. Thank you.
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588
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Started by Blackcows
Has anyone built or seen a nugget trap design to catch oversized gold coming out of a large trommel. Trommel screen holes are 12mm * 20mm so anything over 20mm is ending up in the oversize. Have found a few large nuggets with the detector. Plant oper...
Has anyone built or seen a nugget trap design to catch oversized gold coming out of a large trommel. Trommel screen holes are 12mm * 20mm so anything over 20mm is ending up in the oversize. Have found a few large nuggets with the detector. Plant oper...
Last replied to by rob riggir
Hi David, Did you ever resolve your issue? Cheers, Rob
Hi David, Did you ever resolve your issue? Cheers, Rob
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390
VIEWS
Started by JJ1
Hi Am trying to work out what the grade of a concentrate will be. I have the ore head grade fed to the float plant, the optimal flotation recovery rate and corresponding mass pull. Are these all that is needed to calculate the concentrate grade o...
Hi Am trying to work out what the grade of a concentrate will be. I have the ore head grade fed to the float plant, the optimal flotation recovery rate and corresponding mass pull. Are these all that is needed to calculate the concentrate grade o...
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355
VIEWS
Started by Millza79
Hi all, What is the lowest DMC medium SG that is realistically possible in a coal prep plant and why?
Hi all, What is the lowest DMC medium SG that is realistically possible in a coal prep plant and why?
Last replied to by SmartDog
The dense media specific gravity is based on the amount of medium that is suspended in the water. So the answer to your question is obviously 1.0 which is when you have no media added. In effect t...
The dense media specific gravity is based on the amount of medium that is suspended in the water. So the answer to your question is obviously 1.0 which is when you have no media added. In effect t...
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513
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Started by Millza79
We are reviewing some testwork for a client. In their plant flowsheet, they have three stages of gravity separation (Knelsons), but in the testwork they only did two stages. Is this reasonable, or should they have done a 3rd stage to replicate t...
We are reviewing some testwork for a client. In their plant flowsheet, they have three stages of gravity separation (Knelsons), but in the testwork they only did two stages. Is this reasonable, or should they have done a 3rd stage to replicate t...
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560
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Started by Blackcows
Does anyone know what the right back pressure settings should be relating to a G700M Great concentrator. Pretty much the same as the big Knelson. We are losing fine gold in the tails still. Can't find anyone who know much about concentrators in gener...
Does anyone know what the right back pressure settings should be relating to a G700M Great concentrator. Pretty much the same as the big Knelson. We are losing fine gold in the tails still. Can't find anyone who know much about concentrators in gener...
Last replied to by David
" Pretty much the same as the big Knelson" PS: The only thing that is "pretty much the same as the big Knelson" is a Falcon & The only thing that is "pretty much the same as the big Falcon" is a Knel...
" Pretty much the same as the big Knelson" PS: The only thing that is "pretty much the same as the big Knelson" is a Falcon & The only thing that is "pretty much the same as the big Falcon" is a Knel...
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454
VIEWS
Started by Yathil
I am looking for methods that you may have for the separation of Alumina from MgO. I am working on a design for a refractory brick recycling plant and I need to separate these 2 oxides to have a viable final product.
I am looking for methods that you may have for the separation of Alumina from MgO. I am working on a design for a refractory brick recycling plant and I need to separate these 2 oxides to have a viable final product.
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625
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Started by Cpt.Popeye
Hello everyone. I am not really sure about the point of this site and I am probably doing something wrong but I am a mining engineering student and having a hard time with this question.Is it possible for me to get some help to understand and solve t...
Hello everyone. I am not really sure about the point of this site and I am probably doing something wrong but I am a mining engineering student and having a hard time with this question.Is it possible for me to get some help to understand and solve t...
Last replied to by SmartDog
Start here: https://www.911metallurgist.com/blog/hydrocyclone-efficiency-curves
Start here: https://www.911metallurgist.com/blog/hydrocyclone-efficiency-curves
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665
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Started by usman hameed
We are dealing in gold washing/placer gold mining at the Northern side of Pakistan. Unfortunately, the placer mining industry has not been flourished in Pakistan yet. The use of primitive gold washing techniques i.e., panning is common. The gold r...
We are dealing in gold washing/placer gold mining at the Northern side of Pakistan. Unfortunately, the placer mining industry has not been flourished in Pakistan yet. The use of primitive gold washing techniques i.e., panning is common. The gold r...
Last replied to by
In placer gold mines, gold usually exists in the form of single natural gold, and its density is generally greater than 16 tons/m3, which has a large difference with the density of gangue. Therefore, ...
In placer gold mines, gold usually exists in the form of single natural gold, and its density is generally greater than 16 tons/m3, which has a large difference with the density of gangue. Therefore, ...
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482
VIEWS
Started by richardh
Hi I need some assistance on something very new to me. Has anyone had any experience with a DMS cyclone using fine Barite as the medium? If so what would be the parameters used in terms of cyclone configuration and feed parameters? Thanks R...
Hi I need some assistance on something very new to me. Has anyone had any experience with a DMS cyclone using fine Barite as the medium? If so what would be the parameters used in terms of cyclone configuration and feed parameters? Thanks R...
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927
VIEWS
Started by Gerbrand
Hi Guy's I am new to your site. I was reading with interest discussions on the gravemetric processes to concentrate diamonds. I see references to soil/ clay used as medium to form the dense slurry . Could you enlighten me on what materials are used f...
Hi Guy's I am new to your site. I was reading with interest discussions on the gravemetric processes to concentrate diamonds. I see references to soil/ clay used as medium to form the dense slurry . Could you enlighten me on what materials are used f...
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820
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Started by David
We installed our iCon i150 some time back but something isn’t ok as there is no separation of gold and black sands despite following all the procedures. I wonder if there is perhaps a problem withthe electric engine RPM not being high enough....A...
We installed our iCon i150 some time back but something isn’t ok as there is no separation of gold and black sands despite following all the procedures. I wonder if there is perhaps a problem withthe electric engine RPM not being high enough....A...
Last replied to by Gene Cheeseman
From my experience high upgrade ratios will be difficult as the black sand tends to saturate the bowl quite quickly. The high fluidizing flow reccomendation is correct as it will keep the riffles di...
From my experience high upgrade ratios will be difficult as the black sand tends to saturate the bowl quite quickly. The high fluidizing flow reccomendation is correct as it will keep the riffles di...
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887
VIEWS
Started by Reid
Hello Everyone, Thank you for your time. I would like feedback on a project we attempted years ago, and would be interested in your input. I guess it would be best to tell you about the back story of what we are trying to do. About 12 years ago...
Hello Everyone, Thank you for your time. I would like feedback on a project we attempted years ago, and would be interested in your input. I guess it would be best to tell you about the back story of what we are trying to do. About 12 years ago...
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833
VIEWS
Started by midnightcrazy
Hello and welcome everyone. Thank you for your time reading this post. My name is Martin, 3rd year Petroleum Engineering student. As a part of my project I am designing a hydrocyclone to separate solid micro particles (clay and silt) from the liquid...
Hello and welcome everyone. Thank you for your time reading this post. My name is Martin, 3rd year Petroleum Engineering student. As a part of my project I am designing a hydrocyclone to separate solid micro particles (clay and silt) from the liquid...
Last replied to by midnightcrazy
Thank you SmartDog, greatly appreciated. I'm checking it now.
Thank you SmartDog, greatly appreciated. I'm checking it now.
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531
VIEWS
Started by MMKG
Hi community, I'm an ambitious graduate mechanical engineer trying to find a way of making emerald mining easier. Lets say we were to put the rocks containing the emerald through a crusher, could we then apply the HMS process to the substance and get...
Hi community, I'm an ambitious graduate mechanical engineer trying to find a way of making emerald mining easier. Lets say we were to put the rocks containing the emerald through a crusher, could we then apply the HMS process to the substance and get...
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1074
VIEWS
Started by Hamid72
Hello evrybody I wanna to know after performing davis tube test for a iron ore sample how can we predict the number of roughing and cleaning stage for plant design? Is this completely on previous experience? Thanks for your guidance
Hello evrybody I wanna to know after performing davis tube test for a iron ore sample how can we predict the number of roughing and cleaning stage for plant design? Is this completely on previous experience? Thanks for your guidance
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941
VIEWS
Started by darylwise
How do I set up a plant or operation to beneficiate Lithium Ore? We are mining Lithium Ore which is between 1.0% to 1.4%. We would like to start beneficiating it. We are looking for a simple process, do it yourself type of process. Our production pl...
How do I set up a plant or operation to beneficiate Lithium Ore? We are mining Lithium Ore which is between 1.0% to 1.4%. We would like to start beneficiating it. We are looking for a simple process, do it yourself type of process. Our production pl...
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1029
VIEWS
Started by Jackpot Joe
I had the opportunity to clean a rifle range. I came here. I learned. I built here it is: https://youtu.be/N_LRjNRIxAs It was done out of a wheelchair with what I had laying around. So don't be too hard on me. It work's great that is what cou...
I had the opportunity to clean a rifle range. I came here. I learned. I built here it is: https://youtu.be/N_LRjNRIxAs It was done out of a wheelchair with what I had laying around. So don't be too hard on me. It work's great that is what cou...
Last commented on by Jackpot Joe
I was under great time and funds limits. No power had to haul water in barrels. It rained and rained I was dealing with a muck and bullets mix at times water running out of the back stop dead center r...
I was under great time and funds limits. No power had to haul water in barrels. It rained and rained I was dealing with a muck and bullets mix at times water running out of the back stop dead center r...
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1601
VIEWS
Started by Seeker
Please help me! I have mixed metal dusts ( coarse grains ) of copper, solder & aluminum. Can I separate all those metals by using Air Knife for grain separation? Link to the video: https://www.youtube.com/watch?v=tVu3_0l0tmE Thanks in advance!
Please help me! I have mixed metal dusts ( coarse grains ) of copper, solder & aluminum. Can I separate all those metals by using Air Knife for grain separation? Link to the video: https://www.youtube.com/watch?v=tVu3_0l0tmE Thanks in advance!
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1021
VIEWS
Started by j.honarpazhouh
hello everyone We have hematite deposit that Our ore contain hematite(65%), quartz(25%) and feldspar(10%), and at 400 micron about 80 percent of our hematite particles are free. in your opinion Can I use Reichert cone for ore concentrating? And whic...
hello everyone We have hematite deposit that Our ore contain hematite(65%), quartz(25%) and feldspar(10%), and at 400 micron about 80 percent of our hematite particles are free. in your opinion Can I use Reichert cone for ore concentrating? And whic...
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877
VIEWS
Started by JGR
Hi, I have extensive experience in DMS for a number of commodities however, I have been asked to investigate the use of rotary pans for the recovery of diamonds. I have spent some time on the web trying to find a fairly detailed process flow diagram ...
Hi, I have extensive experience in DMS for a number of commodities however, I have been asked to investigate the use of rotary pans for the recovery of diamonds. I have spent some time on the web trying to find a fairly detailed process flow diagram ...
Last replied to by rob riggir
Hi Ian, I can help you with your investigations, having been involved with the operation and design of diamond pans in South Africa, Brazil and Australia. I have design calculations as well. You ca...
Hi Ian, I can help you with your investigations, having been involved with the operation and design of diamond pans in South Africa, Brazil and Australia. I have design calculations as well. You ca...
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1285
VIEWS
Started by Peter J
What equipment is best to separate mill oversize from carbon after a disastrous mill run put about 200tons of grit into CIP circuit? I once used a spiral wheel but it would be very slow at this tonnage: Would an agricultural grain destoner work?
What equipment is best to separate mill oversize from carbon after a disastrous mill run put about 200tons of grit into CIP circuit? I once used a spiral wheel but it would be very slow at this tonnage: Would an agricultural grain destoner work?
Last replied to by SIMetallurgist
We use a coal spiral to separate grit and carbon. Our ore SG in 2.6 so similar to yours.
We use a coal spiral to separate grit and carbon. Our ore SG in 2.6 so similar to yours.
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981
VIEWS
Started by Char
Hi, can someone tell me from experience, what the smallest gold particle size is that will fall through water due to gravity of 1g? I.e. will not stay suspended. If possible, can you give a range for clear and silty water? Thanks C
Hi, can someone tell me from experience, what the smallest gold particle size is that will fall through water due to gravity of 1g? I.e. will not stay suspended. If possible, can you give a range for clear and silty water? Thanks C
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793
VIEWS
Started by Hamid72
Hello everyone We have an manganese deposit that contain todorokite, cryptomelane, pyrolusite, hausmannite. at 60 micron about 80 percent of our manganese particles are free. in your opinion what is the best method for this ore concentrating? thank...
Hello everyone We have an manganese deposit that contain todorokite, cryptomelane, pyrolusite, hausmannite. at 60 micron about 80 percent of our manganese particles are free. in your opinion what is the best method for this ore concentrating? thank...
Last replied to by SmartDog
Flotation
Flotation
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803
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Started by Cash Positive
Has anyone done any research with light spectrum to increase recovery on gold table? Has anyone done any work with different light spectrums and or dyes to increase recovering on gold shaker tables?
Has anyone done any research with light spectrum to increase recovery on gold table? Has anyone done any work with different light spectrums and or dyes to increase recovering on gold shaker tables?
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953
VIEWS
Started by Eduardo JImenez
Good day for all: Do sanding in cilindrical flotation cells, Wemco type, in continiuos service, will produce an increase or decrease in motor power draw? https://www.google.com/search?q=fls+flotation+cells&rlz=1C1GCEU_enCL842CL842&source=lnms&tbm=i...
Good day for all: Do sanding in cilindrical flotation cells, Wemco type, in continiuos service, will produce an increase or decrease in motor power draw? https://www.google.com/search?q=fls+flotation+cells&rlz=1C1GCEU_enCL842CL842&source=lnms&tbm=i...
Last replied to by SmartDog
First off let us discuss why and how sanding occurs, because that does have an impact. Sanding can occur for many reasons, the two main and most common being; 1) poor classification ahead of flotati...
First off let us discuss why and how sanding occurs, because that does have an impact. Sanding can occur for many reasons, the two main and most common being; 1) poor classification ahead of flotati...
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1316
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Started by tichalfred
On carrying out tracer tests on a HMS cyclone; the tracers of varying density report to both the floats and the sinks. Seems no separation is occuring and it's a random placement of the tracers. Have varied the pressure and SG to no avail. Have also ...
On carrying out tracer tests on a HMS cyclone; the tracers of varying density report to both the floats and the sinks. Seems no separation is occuring and it's a random placement of the tracers. Have varied the pressure and SG to no avail. Have also ...
2
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1118
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Started by Sam
I recently purchased a trommel from a friend. It was built by an engineer who is now deceased. It incorporates a shaker deck, a scrubber trommel and a jig. It works fine without the jig (sluicing). The friend didn’t use it. I am curious as to what ...
I recently purchased a trommel from a friend. It was built by an engineer who is now deceased. It incorporates a shaker deck, a scrubber trommel and a jig. It works fine without the jig (sluicing). The friend didn’t use it. I am curious as to what ...
Last replied to by David
Hi Mike, here is what Sam sent me https://youtu.be/ysFnPB57zXY
Hi Mike, here is what Sam sent me https://youtu.be/ysFnPB57zXY
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807
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Started by ALanyon
Hi, I am wanting to examine some methods to reduce the vibration in our Falcon unit. Primarily the high vibration occurs early in the cycle (first 5 minutes). I can see the fluidized bed coming away from the bowl when the high level of vibration...
Hi, I am wanting to examine some methods to reduce the vibration in our Falcon unit. Primarily the high vibration occurs early in the cycle (first 5 minutes). I can see the fluidized bed coming away from the bowl when the high level of vibration...
2
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946
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Started by Millza79
Hi all, could somebody please tell me the typical top size/maximum size that can feed a Knelson and a Falcon?
Hi all, could somebody please tell me the typical top size/maximum size that can feed a Knelson and a Falcon?
Last replied to by Gene Cheeseman
Typically the recommended protection screen size would be 10M (2 mm). They can handle particles up to 1/4" as SmartDog mentioned but you will see a massive increase in wear rates with minimal benef...
Typically the recommended protection screen size would be 10M (2 mm). They can handle particles up to 1/4" as SmartDog mentioned but you will see a massive increase in wear rates with minimal benef...
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652
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Started by spsatyananda05
I've activated bentonite with HCl. due to the activation the SiO2 has increased and Al2O3 decreased, i don't have the reason why the SiO2 has increased and Al2O3 decreased. Do anyone know the exact reason why this change happening?
I've activated bentonite with HCl. due to the activation the SiO2 has increased and Al2O3 decreased, i don't have the reason why the SiO2 has increased and Al2O3 decreased. Do anyone know the exact reason why this change happening?
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798
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Started by Sam
I have a project in Arizona. Old manganese mines that contain medium quality gold ore. The manganese ranges from10% to plus 30%. I have 900 tons of ore reserves on two small claims. Water is an issue. Lack of it. I have captured gold via dry washing ...
I have a project in Arizona. Old manganese mines that contain medium quality gold ore. The manganese ranges from10% to plus 30%. I have 900 tons of ore reserves on two small claims. Water is an issue. Lack of it. I have captured gold via dry washing ...
Last replied to by SmartDog
The big issue is the amount of ore you have. 900 tons is not a lot of ore. Any system beyond what you are already have is going to be in the 50+ t/hr range and cost over $50,000 plus auxiliary equip...
The big issue is the amount of ore you have. 900 tons is not a lot of ore. Any system beyond what you are already have is going to be in the 50+ t/hr range and cost over $50,000 plus auxiliary equip...
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1091
VIEWS
Started by Raulacun
I have a Knelson 7.5 with vibrating screen. Someone stole the electric motors of the concentrator and the screen. To replace them locally, I need to know the rpm of the motor and the diameter of the original pulley, here we use 110/220 V 60 hz monofa...
I have a Knelson 7.5 with vibrating screen. Someone stole the electric motors of the concentrator and the screen. To replace them locally, I need to know the rpm of the motor and the diameter of the original pulley, here we use 110/220 V 60 hz monofa...
Last replied to by jaimecarmonaa@gmail.com
Good morning Raul. Chris' answer is correct. You should only know that the cone should rotate at 400 RPM. Commercially the 3 / 4HP engine can be purchased at 1750 RPM. I do not remember the diameter...
Good morning Raul. Chris' answer is correct. You should only know that the cone should rotate at 400 RPM. Commercially the 3 / 4HP engine can be purchased at 1750 RPM. I do not remember the diameter...
Do a tracer test to determine your cut-point.