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16
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4765
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Started by Maya Rothman
I would like know if anybody has studied the relationship of flotation efficiency in function of feed grade of ore, normally system set for a defined grade, what happen if the grade varies? About efficiency for me, flotation RECOVERY is importan...
I would like know if anybody has studied the relationship of flotation efficiency in function of feed grade of ore, normally system set for a defined grade, what happen if the grade varies? About efficiency for me, flotation RECOVERY is importan...
5
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2584
VIEWS
Started by
Should base metals concentrators use collectors other than xanthates? For example, dithiocarbamates etc? Xanthates have been used for a long time. There are other types of Flotation collectors that can be more selective against pyrite and pyrrhotit...
Should base metals concentrators use collectors other than xanthates? For example, dithiocarbamates etc? Xanthates have been used for a long time. There are other types of Flotation collectors that can be more selective against pyrite and pyrrhotit...
3
REPLIES
1972
VIEWS
Started by Gruppen
I was thinking of submitting an update on our new LTM flotation electromagnetic level probe for flotation plants. I tried to do a search first to see if anything about this subject has been published. Watch this space though. I'm waiting for my clien...
I was thinking of submitting an update on our new LTM flotation electromagnetic level probe for flotation plants. I tried to do a search first to see if anything about this subject has been published. Watch this space though. I'm waiting for my clien...
48
REPLIES
2934
VIEWS
Started by Gruppen
For a number of years a mine struggled to float a sulfide mineral and was getting less than 50% recovery even after installing a rotor and stator “upgrade”. We did minor modification to the rougher float cells and achieved a 19% increase in recov...
For a number of years a mine struggled to float a sulfide mineral and was getting less than 50% recovery even after installing a rotor and stator “upgrade”. We did minor modification to the rougher float cells and achieved a 19% increase in recov...
Last replied to by Raje Singh
Would you please suggest that what are the reliable laboratory test works which would provide the ultimate clean ability of a particular raw coal through fine coal beneficiation processes?Suppose we a...
Would you please suggest that what are the reliable laboratory test works which would provide the ultimate clean ability of a particular raw coal through fine coal beneficiation processes?Suppose we a...
6
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2911
VIEWS
Started by Bob Mathias
What type of starch and how much is typically used in the flotation of hematite?
What type of starch and how much is typically used in the flotation of hematite?
Last replied to by Raje Singh
QUALITYOF CHEMICAL:• Starch used is a specially made for flotation. It is made at very low temperature. You need to buy only from those who are supplying to Iron ore beneficiation. Others do not wor...
QUALITYOF CHEMICAL:• Starch used is a specially made for flotation. It is made at very low temperature. You need to buy only from those who are supplying to Iron ore beneficiation. Others do not wor...
2
REPLIES
2060
VIEWS
Started by
We travel the world talking with Processing Managers and maintenance personnel who all seem to want the same thing in their plants, Greater Throughput and Lower Cost. And why not! I mean, who wouldn't like to get more for less? Would you? When we a...
We travel the world talking with Processing Managers and maintenance personnel who all seem to want the same thing in their plants, Greater Throughput and Lower Cost. And why not! I mean, who wouldn't like to get more for less? Would you? When we a...
Last replied to by
That’s right, TEi Steel Trommels are 100% steel construction.TEi Steel Trommels are a completely consumable item with a solid screen and not panels. The increase in open area is principally achieved...
That’s right, TEi Steel Trommels are 100% steel construction.TEi Steel Trommels are a completely consumable item with a solid screen and not panels. The increase in open area is principally achieved...
11
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1563
VIEWS
Started by
I am seeing a grey /white deposit on stainless parts in a zinc flotation cell. The deposit is hard and can only be removed by HCl. Anyone seen this and know what it could be? I would like to prevent it happening. Do you think Zinc Sulphide from Spha...
I am seeing a grey /white deposit on stainless parts in a zinc flotation cell. The deposit is hard and can only be removed by HCl. Anyone seen this and know what it could be? I would like to prevent it happening. Do you think Zinc Sulphide from Spha...
Last replied to by Helena Russell
I must admit I would have said no, but then I remember the situation at Black Mountain when Anglo-American took over from Gold Fields. Although another Cu-Pb-Zn orebody at Aggeneys, the reason for the...
I must admit I would have said no, but then I remember the situation at Black Mountain when Anglo-American took over from Gold Fields. Although another Cu-Pb-Zn orebody at Aggeneys, the reason for the...
8
REPLIES
1636
VIEWS
Started by
Anybody with experience on Asbestos fiber rejection in copper flotation circuits. We have suffered high asbestos in our concentrate and have no solution for now.
Anybody with experience on Asbestos fiber rejection in copper flotation circuits. We have suffered high asbestos in our concentrate and have no solution for now.
Last replied to by Subhash-Kumar-Roy
I worked on a low grade Ni project for a few years where the ore was from an ultramafic deposit. We had a lot of success with a hydro cyclone used for fiber removal before the rougher float. Once the ...
I worked on a low grade Ni project for a few years where the ore was from an ultramafic deposit. We had a lot of success with a hydro cyclone used for fiber removal before the rougher float. Once the ...
7
REPLIES
3664
VIEWS
Started by Obergruppenfuhrer
My colleagues are developing an artificial vision system that analyses the froth flotation process, I am very interested to get involved in this development but I'm not really familiar with the parameters they are analyzing. I've heard of the followi...
My colleagues are developing an artificial vision system that analyses the froth flotation process, I am very interested to get involved in this development but I'm not really familiar with the parameters they are analyzing. I've heard of the followi...
Last replied to by Tarun Karakoti
Yes what you say is correct. There are standards we need to look at and adopt. Due to lack of knowledge in operation, many neglect these points. Many operators are discourages for their hard work in p...
Yes what you say is correct. There are standards we need to look at and adopt. Due to lack of knowledge in operation, many neglect these points. Many operators are discourages for their hard work in p...
9
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1916
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Started by
Does anyone have any information on how to strip thiophosphate flotation collector from sulphide concentrate on a Laboratory scale?
Does anyone have any information on how to strip thiophosphate flotation collector from sulphide concentrate on a Laboratory scale?
Last replied to by Sudhirkumar
Target the final tails should not have more than 1 % sulphur for compliance of environmental management.May think or try the following route•Float chalcopyrite and pyrite together as bulk concentrat...
Target the final tails should not have more than 1 % sulphur for compliance of environmental management.May think or try the following route•Float chalcopyrite and pyrite together as bulk concentrat...
18
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4278
VIEWS
Started by
If you are doing batch flotation tests in the lab for evaluating reagents, grind size effect and grade/recovery improvement, does the Percent solids have to match plant Percent solids or it doesn't matter. Also if can refer to me to notes/text books ...
If you are doing batch flotation tests in the lab for evaluating reagents, grind size effect and grade/recovery improvement, does the Percent solids have to match plant Percent solids or it doesn't matter. Also if can refer to me to notes/text books ...
Last commented on by David
Thanks for you input Nicomedk, Here is a test group on flotation density and is impact you make like to review and comment on https://www.911metallurgist.com/blog/effect-of-flotation-cell-size-labor...
Thanks for you input Nicomedk, Here is a test group on flotation density and is impact you make like to review and comment on https://www.911metallurgist.com/blog/effect-of-flotation-cell-size-labor...
3
REPLIES
1590
VIEWS
Started by Obergruppenfuhrer
I am trying to upgrade bismuthinite to 10% from bulk float conc. containing pyrrohite, pyrite & some copper minerals. Currently using lime and NaCN to depress gangue minerals. Has anyone done this before? Am not yet looking at slurry electrowinning p...
I am trying to upgrade bismuthinite to 10% from bulk float conc. containing pyrrohite, pyrite & some copper minerals. Currently using lime and NaCN to depress gangue minerals. Has anyone done this before? Am not yet looking at slurry electrowinning p...
Last replied to by Gruppen
What is your starting bismuthinite grade in the bulk concentrate? Of the two iron sulphides, which one is the predominant - pyrrotite or pyrite? What kind of copper minerals do you have? Finally, h...
What is your starting bismuthinite grade in the bulk concentrate? Of the two iron sulphides, which one is the predominant - pyrrotite or pyrite? What kind of copper minerals do you have? Finally, h...
15
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1615
VIEWS
Started by
In my flotation circuit, I need to increase recovery of Au in flotation of Cu from 0.8% to at least 1.0%, does anyone has the experience how would be the best practice to obtain this? I will appreciate your advice.
In my flotation circuit, I need to increase recovery of Au in flotation of Cu from 0.8% to at least 1.0%, does anyone has the experience how would be the best practice to obtain this? I will appreciate your advice.
Last replied to by
I am still working in getting data to be examined and to be able to take a determination. I am still working with the geologist to make a closer study of characterization of the ore and tails and the ...
I am still working in getting data to be examined and to be able to take a determination. I am still working with the geologist to make a closer study of characterization of the ore and tails and the ...
12
REPLIES
2500
VIEWS
Started by Maya Rothman
I'm wondering if any members out there have Designed and are operating a repulping circuit for sulphide concentrate and would I be interested in details of the specific unit operations used (repulping screens vs trommels, feed mechanisms etc) and th...
I'm wondering if any members out there have Designed and are operating a repulping circuit for sulphide concentrate and would I be interested in details of the specific unit operations used (repulping screens vs trommels, feed mechanisms etc) and th...
6
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2312
VIEWS
Started by Obergruppenfuhrer
Laboratory batch flotation testing generally involves the determination of recovery for a given component of the system, for example copper or gold. The method used to calculate recovery is not as straight forward as you may.
Laboratory batch flotation testing generally involves the determination of recovery for a given component of the system, for example copper or gold. The method used to calculate recovery is not as straight forward as you may.
Last replied to by
The sample selection is vital to have an answer on what a researcher is trying to find. I agree with that. It is also very important to understand the system sampling and assay errors. Every system is...
The sample selection is vital to have an answer on what a researcher is trying to find. I agree with that. It is also very important to understand the system sampling and assay errors. Every system is...
4
REPLIES
2005
VIEWS
Started by
Can anyone help me about the production cost of Pb Zn lead and zinc concentrate with flotation plant?
Can anyone help me about the production cost of Pb Zn lead and zinc concentrate with flotation plant?
Last replied to by
Thanks for your comment. Actually, I am doing a research and I want to compare different flotation plants process costs.
Thanks for your comment. Actually, I am doing a research and I want to compare different flotation plants process costs.
1
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2655
VIEWS
Started by
Estimados, soy ingeniero de minas e se poco de lo que voy a preguntar: ¿Para recuperar oro de los sulfuros una alternativa es colocar el mineral en hornos hasta que se hay oxidado el sulfuro, además de eso tengo entendido que al pulverizar en menos...
Estimados, soy ingeniero de minas e se poco de lo que voy a preguntar: ¿Para recuperar oro de los sulfuros una alternativa es colocar el mineral en hornos hasta que se hay oxidado el sulfuro, además de eso tengo entendido que al pulverizar en menos...
Last replied to by Helena Russell
Tu como minero debes saber que en algunos minerales de sulfuro, contienen como sub producto el oro en bajos ppm. Comúnmente mediante el proceso de flotación sulfuro se recuperan como sub productos; ...
Tu como minero debes saber que en algunos minerales de sulfuro, contienen como sub producto el oro en bajos ppm. Comúnmente mediante el proceso de flotación sulfuro se recuperan como sub productos; ...
1
REPLY
2339
VIEWS
Started by Marshal Meru
Surface Analysis versus Mineral Chemistry Fundamentals. Systematic flotation fundamentals anyone? We have learned, 'on-the-job', some basic flotation lingo as process mineralogists, but is there some basic stuff we're missing? We know of relative flo...
Surface Analysis versus Mineral Chemistry Fundamentals. Systematic flotation fundamentals anyone? We have learned, 'on-the-job', some basic flotation lingo as process mineralogists, but is there some basic stuff we're missing? We know of relative flo...
Last replied to by
Is the "Fe on the surface" of pentlandite and sphalerite comes from Ni/S or Zn/S depletion of this surface, from the Fe content of the mineral, or from precipitation of Fe ions arising from the galvan...
Is the "Fe on the surface" of pentlandite and sphalerite comes from Ni/S or Zn/S depletion of this surface, from the Fe content of the mineral, or from precipitation of Fe ions arising from the galvan...
7
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3273
VIEWS
Started by
Do you know a mineral of molybdenum with unacceptable floatability? Molybdenum is a valuable mineral which could be found in porphyry copper deposits and molybdenum is the main mineral of molybdenite. According to our recent studies we have observed ...
Do you know a mineral of molybdenum with unacceptable floatability? Molybdenum is a valuable mineral which could be found in porphyry copper deposits and molybdenum is the main mineral of molybdenite. According to our recent studies we have observed ...
Last replied to by
I am a late entrant to this discussion. As per SME Mineral Processing Handbook there are 12-14 minerals of Moly but the main is molybdenite. Molybdenite is naturally floating and there should not be a...
I am a late entrant to this discussion. As per SME Mineral Processing Handbook there are 12-14 minerals of Moly but the main is molybdenite. Molybdenite is naturally floating and there should not be a...
6
REPLIES
4548
VIEWS
Started by
Can you list the factors affects the floatability of pyrite from refractory low grade ore.I used a Wemco lab flotation cell and aimed on analysing factors like collector dosages (PAX), Activator (Copper sulphate),MIBC , pH and others like pulp densit...
Can you list the factors affects the floatability of pyrite from refractory low grade ore.I used a Wemco lab flotation cell and aimed on analysing factors like collector dosages (PAX), Activator (Copper sulphate),MIBC , pH and others like pulp densit...
Last replied to by
From my understanding, you would like to get a high pyrite flotation recovery because the gold is locked in the pyrite. And you are trying to analysing the effect of various factors on pyrite flotatio...
From my understanding, you would like to get a high pyrite flotation recovery because the gold is locked in the pyrite. And you are trying to analysing the effect of various factors on pyrite flotatio...
13
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1695
VIEWS
Started by Zander Barcalow
We are running Outotec 50 m3 Tank Cells followed by Wemco Cells (8 m3), in Tanks we just float fines/ultra-fines even gangue, but in Wemco it is desired flotation, is there any idea what is going on? The point is our feed slurry is pumped directly fr...
We are running Outotec 50 m3 Tank Cells followed by Wemco Cells (8 m3), in Tanks we just float fines/ultra-fines even gangue, but in Wemco it is desired flotation, is there any idea what is going on? The point is our feed slurry is pumped directly fr...
Last replied to by
I think you need to be aware about the froth carry rate limit so that could be easier to understand the stability of the froth. Also the type of the reagents employed such as collector type, frother, ...
I think you need to be aware about the froth carry rate limit so that could be easier to understand the stability of the froth. Also the type of the reagents employed such as collector type, frother, ...
6
REPLIES
2323
VIEWS
Started by Jean Rasczak
Can anyone suggest what will be the next process after processing and beneficiation of low grade graphite ore by froth flotation? What flowsheet is my plant needing and how I remove coated graphite form the clay particle after flotation?
Can anyone suggest what will be the next process after processing and beneficiation of low grade graphite ore by froth flotation? What flowsheet is my plant needing and how I remove coated graphite form the clay particle after flotation?
Last replied to by
It's a matter of how you design grinding and classification process before the flotation. If there is overgrinding problem in the process you will have graphite slime coating on clay particles and thi...
It's a matter of how you design grinding and classification process before the flotation. If there is overgrinding problem in the process you will have graphite slime coating on clay particles and thi...
1
REPLY
2069
VIEWS
Started by
Can anyone please tell me which Flotation Reagents are being used in major concentrators in Zambia and the Democratic Republic of Congo (DRC)?
Can anyone please tell me which Flotation Reagents are being used in major concentrators in Zambia and the Democratic Republic of Congo (DRC)?
Last replied to by
1) For the Copper-Cobalt sulphides ores treatment: Frothers (Sasfroth G41, Dowfroth or FQZ 8), Collectors (Sodium ethyl xanthate, Sodium isopropyl xanthate or MX 150).a) If the ores contains too much...
1) For the Copper-Cobalt sulphides ores treatment: Frothers (Sasfroth G41, Dowfroth or FQZ 8), Collectors (Sodium ethyl xanthate, Sodium isopropyl xanthate or MX 150).a) If the ores contains too much...
14
REPLIES
2011
VIEWS
Started by Helena Russell
Can anyone tell me of an operating mine floating 4 concentrates - Cu, Pb, Zn and Pyrite? I was thinking on the pyrite concentrate for environmental purpose - to mitigate risk of ARD.This search is a little more complicated to find than anticipated...
Can anyone tell me of an operating mine floating 4 concentrates - Cu, Pb, Zn and Pyrite? I was thinking on the pyrite concentrate for environmental purpose - to mitigate risk of ARD.This search is a little more complicated to find than anticipated...
Last replied to by
If copper is in oxidised form then it is easy to leach. 1st float lead copper --separate lead from copper. Then 2nd stage float Zinc. Pyrite can be depressed using cyanide in all concentrates.
If copper is in oxidised form then it is easy to leach. 1st float lead copper --separate lead from copper. Then 2nd stage float Zinc. Pyrite can be depressed using cyanide in all concentrates.
3
REPLIES
2881
VIEWS
Started by Maya Rothman
Fluorite flotation: please anybody suggest good depressants for silica and calcite in fluorite flotation.My specs are now: Raw fluorspar has CaF2 =60%, CaCO3=19.5% and SiO2=9.7%, I am already using water glass, pH=10, with oleac acid as collecter...
Fluorite flotation: please anybody suggest good depressants for silica and calcite in fluorite flotation.My specs are now: Raw fluorspar has CaF2 =60%, CaCO3=19.5% and SiO2=9.7%, I am already using water glass, pH=10, with oleac acid as collecter...
Last replied to by JohnnyD
Many people failed to depress silica. The answer for Natalia's comment, is that we do not have 100% pure silica, it is in interlocked form. It also behaves like fluorite due to interlocking. Fine grin...
Many people failed to depress silica. The answer for Natalia's comment, is that we do not have 100% pure silica, it is in interlocked form. It also behaves like fluorite due to interlocking. Fine grin...
8
REPLIES
3657
VIEWS
Started by
Hello, in the flotation of Platinum Group Metal Ores, is it considered wise or cost effective to introduce pH control? Is there any mine that mine PGMs that does pH control in their metallurgical plants?The reason why i ask is because i did some t...
Hello, in the flotation of Platinum Group Metal Ores, is it considered wise or cost effective to introduce pH control? Is there any mine that mine PGMs that does pH control in their metallurgical plants?The reason why i ask is because i did some t...
Last replied to by David
Great papers Effect of pH on the Recovery and Grade of Base Metal Sulphides (PGMs) by Flotation and a Patent on FLOTATION OF PLATINUM GROUP METAL ORE MATERIALS
Great papers Effect of pH on the Recovery and Grade of Base Metal Sulphides (PGMs) by Flotation and a Patent on FLOTATION OF PLATINUM GROUP METAL ORE MATERIALS
10
REPLIES
2275
VIEWS
Started by Helena Russell
I am processing copper ores with high carbon content (shale). The feature of the flotation foam large bubbles with high surface tension. I'm looking for a reagent that can help decrease the stability of the bubble, but that does not affect the reco...
I am processing copper ores with high carbon content (shale). The feature of the flotation foam large bubbles with high surface tension. I'm looking for a reagent that can help decrease the stability of the bubble, but that does not affect the reco...
Last commented on by David
And hopefully the grain size it not ultra-fine to the point where carbon is smeared all over the key sulfides. If you loose to my good sulfides, you can re-clean that (collector-free) using SMBS to k...
And hopefully the grain size it not ultra-fine to the point where carbon is smeared all over the key sulfides. If you loose to my good sulfides, you can re-clean that (collector-free) using SMBS to k...
8
REPLIES
2540
VIEWS
Started by Bob Mathias
I am looking for support and suggestions on how to go about further development and placement of our in mineral processing innovation, given that we are a small engineering and research firm trying to figure out how to knock on right doors and talk t...
I am looking for support and suggestions on how to go about further development and placement of our in mineral processing innovation, given that we are a small engineering and research firm trying to figure out how to knock on right doors and talk t...
Last replied to by David
5
REPLIES
1890
VIEWS
Started by Victor Bergman
Our mineralogy are very complex with: chalcopyrite, bornite, chalcocite tennantite, malachite, sphalerite I and II, pyrite, galena, chalcocite, covellite, gray copper, magnetite. It also have soluble salts of Cu, Fe, Pb, Zn.We have flotation bulk, co...
Our mineralogy are very complex with: chalcopyrite, bornite, chalcocite tennantite, malachite, sphalerite I and II, pyrite, galena, chalcocite, covellite, gray copper, magnetite. It also have soluble salts of Cu, Fe, Pb, Zn.We have flotation bulk, co...
Last commented on by Victor Bergman
Thanks for your comments, I am going to review your suggestions in the blog, but the problem is the salts of Cu, Pb, Fe, Zn. and we need to change the chemistry of flotation in our operations.
Thanks for your comments, I am going to review your suggestions in the blog, but the problem is the salts of Cu, Pb, Fe, Zn. and we need to change the chemistry of flotation in our operations.
13
REPLIES
3585
VIEWS
Started by Helena Russell
Am looking at what can be used to depress pyrite in sulphide ore without affecting copper recovery greatly. Am currently undertaking a project on the depression of pyrite, am trying to use aeration and milling at high pH and its proving to work but a...
Am looking at what can be used to depress pyrite in sulphide ore without affecting copper recovery greatly. Am currently undertaking a project on the depression of pyrite, am trying to use aeration and milling at high pH and its proving to work but a...
Last replied to by Helena Russell
I have been following very well and i did reply to the questions posed whether i know the mineralogy of the ore very well and if it was fully liberated at the grind size am operating at,,,most of all ...
I have been following very well and i did reply to the questions posed whether i know the mineralogy of the ore very well and if it was fully liberated at the grind size am operating at,,,most of all ...
4
REPLIES
1680
VIEWS
Started by
I have encountered a problem for my project. I am working on mechanical flotation of barite and calculating its selectivity indices. I need to know how could I derive/calculate barite grade in both tailing and concentration for every flotation test w...
I have encountered a problem for my project. I am working on mechanical flotation of barite and calculating its selectivity indices. I need to know how could I derive/calculate barite grade in both tailing and concentration for every flotation test w...
Last replied to by
Thank you guys
Thank you guys
7
REPLIES
3153
VIEWS
Started by Maya Rothman
How can one recover molybdenum from both copper oxide and sulphide concentrates?
How can one recover molybdenum from both copper oxide and sulphide concentrates?
Last replied to by Bob Mathias
The economies of the process must be considered in parallel with the chemical/mineralogical aspects. Frequently, making a very high grade concentrate is counterproductive. It is mentioned in several o...
The economies of the process must be considered in parallel with the chemical/mineralogical aspects. Frequently, making a very high grade concentrate is counterproductive. It is mentioned in several o...
7
REPLIES
1866
VIEWS
Started by
Using applied statistics to improve plant performance, an increase in Silver Recovery was obtained/improved by optimization. I have done the same in several mines. Lean tools and six sigma work well in the mining environment.What keeps surprising m...
Using applied statistics to improve plant performance, an increase in Silver Recovery was obtained/improved by optimization. I have done the same in several mines. Lean tools and six sigma work well in the mining environment.What keeps surprising m...
Last replied to by
Decisions in the mining industry are not supported by data, in general. Even in companies that promote data driven decision. The support needs to come from the top.I can help optimize a reagent suite ...
Decisions in the mining industry are not supported by data, in general. Even in companies that promote data driven decision. The support needs to come from the top.I can help optimize a reagent suite ...
Hello Bob, i am about to conduct investigation along liberation and consequence on flotation for a gold plant. I will appreciate it if I can contact you so you can share some of experience with me. My...