Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)2017-04-04T06:57:31-04:00
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Started by Obergruppenfuhrer
Have you ever dealt with a Cu/Pb/Zn ore which has a lot of carbon in its composition?Can someone provide some ideas of how to deal with carbon? We have been trying to float carbon using MIBC, and only after stage this we were able to generate adequat...
Last commented on by K@TTU
Regarding to some comments, the best way to deal with naturally floating carbon is by pre-flotation. It should be mentioned that, the pre-flotation concentrate usually is discarded directly to tailing...
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Started by vsrangarajan
Are the Woodgrove flotation reactors the new revolution in flotation? Any comparison of these machines with existing ones?
Last replied to by shevy
Any updates on the Woodgrove Cells?
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Started by Tarun Karakoti
I’m looking for copper concentrate plants that use sodium cyanide as a depressant for pyrite in the flotation of copper. Does anyone have experience in this case?
Last replied to by JP
We have just recently introduced CN in our flotation circuit at the cleaner cells. Hoping to refresh this forum thread to welcome thoughts from others who have practical experience on this, or recent ...
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Started by paul
I was running the project of investigating the flotation of the certain copper bearing ore. The reagents i used were PAX, AEROPHINE, interfroth, NaOH and CMC. After the analysis of the results i found that the recovery i obtained were within the rang...
Last commented on by Josue Nduwa
True! I would do MLA or QUEM SEM on the flot feed
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Started by
Does anyone know of any commercial operations employing forward flotation of limestone using oleic acid or sodium oleate? I am aware that there are several flotation plants in Europe and North America treating limestone using reverse flotation by ami...
Last replied to by Mr. Nanda kishore
If the limestone grade is almost high and contains above 90% CaCO3, then in direct flotation more reagent is required for collecting all limestone mineral. But if u r not concern about reagent cost, t...
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Started by Etienne
Do any company use flotation for producing de-icing salt? I have an ore with ~80%NaCl and I'd like to produce a 91%NaCl salt for de-icing. Have you heard about companies that did it? I also would like to produce food salt (97%NaCl) with flotation, b...
Last replied to by ChrisBucknell
So just wondering what is the Pb chloride about at the head of the circuit shown?
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Started by Omurvama
Hello, Now we are having problems in the selection of the flotation collector for a copper ore, in lab test we can´t see any difference in concentrates with sodium amyl xanthate and sodium isopropyl xanthate. Based on your experience which promoter...
Last replied to by cmutale3
Try to carry out optimization tests using various combination ratios of these collectors. Currently we are using MX 5149 as a primary collector and SEX secondary. David, MX is stronger than SEX but...
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Started by rokxter
I have been involved in assaying a rock pit with sulfide ore for a couple of years.  We have done gravity concentration tests and the ore loses 75% of the gold and silver value when you gravity concentrate.  We did a down and dirty flotation test w...
Last replied to by max skinner
Along with everything David is telling you, you should consider some screen analysis with assays to tell you   exactly where, size fraction, your gold is. You should do this on your heads and your ta...
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Started by Reinhold Leo
I am struggling with benchmarking copper recoveries of operations with a similar type of ore. Please help
Last replied to by Reinhold Leo
Thank you David. I am reading all the materials you have recommended . If I have any questions, I will let you know.
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Started by gallala
I would develop the treatment of phosphate with saline water.Please let me know what you think about the use of salted sea water as process water for carbonate and siliceous phosphate beneficiation.
Last replied to by
Using sea water can have some drawbacks; first corrosion of equipment would occur unless special materials were used for the flotation vessels and secondly without large reagent additions, your flotat...
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Started by Mostafa
Dear David,hope you are fine,and i have an very important question about Denver DR flotation machine can i use it in paper de-inking process as a flotation cell because the microprocess are the same in mineral flotation and de-inking flotation a...
Last replied to by Bob Mathias
Yes the application of flotation for deinking in the recycled paper industry has attracted much attention in recent years. By its chemical nature, ink is sufficiently hydrophobic and docs not require ...
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Started by doduroyal
Good day, please I need good info on talc Beneficiation. I have a large deposits of talc ore and I want to do away with the junk metals in the ore.
Last commented on by doduroyal
the analysis of the talc shows SiO2 54.10%, MgO 29.90%, CaO 1.7%, Fe2O2 6.80%
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Started by sherafat71
Hi, how can do scaling up in flotation with variable air flow rate test and MFT test and OutoTec method? how rich scale up factor? in MFT method  how doing tests? thanks  
Last replied to by Jorge
The relationship between the recovery of gangue and water  is often referred to as the entrainment factor, sometimes mentioned as Ent. The entrainment factor is defined as the recovery of the t...
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Started by Question Emailed
Hi my dears. I am researchers in Iran Sarcheshmeh Copper Mine. One of the problems concentrator increases the amount of clay minerals and pyrite in flotation concentrates and the final grade will be reduced. What do you suggest for chemicals? What is...
Last replied to by David
Hello Mahdi, as you see in this paper on The effect of mixed collectors in the rougher flotation of copper HP700 and HP600 (alcohols in amine oxide) are typically used in the flotation of porphyry c...
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Started by Question Emailed
We found a mineralized zone of large volume and is appears to be made of Millerite (NiS), Pentlandite and Chalcopyrite.  How would we process this, separate each metal from one another? Thanks
Last replied to by David
Off the top of my head I don’t think this has been done. Google says a couple of micro-floats have been done. It is an interesting problem, never heard of this before. · I would separate Ni from c...
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Started by dimanmarfi
hello all In the self aerated flotation machine, how How will adjust the speed impeller according to feeding rate of pulp? for example, if pulp feeding rate is 1 ton/min, how to determine the speed of rotation of the impeller? thanks
Last replied to by David
Thanks Wayne. This same article can also be seen free at http://www.cfd.com.au/cfd_conf06/PDFs/028Koh.pdf  
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Started by f.hatami
in industry scale, the level of froth in flotation cells(column, agitated) suddenly comes down and we say the cell is in breathing, what is the cause of this matter?
Last replied to by
Hi f.hatami, consider that your level controller or drain value is faulty (sticky) or too slow to react to hold a steady level.  
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Started by f.hatami
i read a paper with title  "Fine pyrite flotation in an agitated column cell" and have no information about this topic.
Last replied to by Jorge
The recovery of fine pyrite using an agitated column cell was an investigation in the met lab. Nowadays, two of the main manufacturers of column cells provide columns equipped with recirculation pumps...
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Started by dimanmarfi
hello good time Do you know, what is formulas or methodology is used for convert the data lab to plant scale? thanks
Last replied to by Paul Morrow
dimanmarfi be sure to read: https://911metallurgist.com/C/Laboratory-Flotation-Testing-Procedure.pdf
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Started by hani
hi all i want to know, what is optimize range of particle size in sphalerite - galena flotation? thanks alot
Last replied to by Dynamo21
I don't know too much about galena, I have found some good samples of the stuff that contained much silver. But I have not tried to work any of them. I have been working a river containing much zircon...
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Started by dimanmarfi
hi what is method is used for determination amount of collector, frother, depressant, activator, ... in lead - zinc flotation on industrial scale? what is relationship between particle size of ore in pulp and  aeration and stator speed ? th...
Last replied to by Jorge
In order to select the reagents and the dosage is important to perform flotation tests. In the testing program is  common to evaluate different types of collectors, depressants, frothers, pH regulato...
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Started by AAK
Hello, could someone please give me a hint on this problem. We have scheelite concentrate with some amount of zircon, which rises radioactivity above desired limits. Our last operation in producing scheelite is flotation of sulfides, which we carr...
Last replied to by David
Hi Anton, best get a copy of http://www.academia.edu/22691019/Handbook_of_Flotation_Reagents_Chemistry_Theory_and_Practice_Flotation_of_Sulfide_Ores  
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Started by Rahil Khan
I want to compare the performance of Cylindrical Tank Cell vs. U tank rectangular mechanical flotation cell.I have worked in Pb Zn beneficiation plant where we had both Cylindrical and U rectangular tank mechanical flotation cell. And in my opinion, ...
Last replied to by Rahil Khan
Regarding silver recovery comparison, should be followed post to the attaining of similar liberation level feed.
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Started by Standartenfurer
What are the pros and cons of utilizing standard flotation cells verses flotation columns in the extraction of gold and copper?
Last replied to by Ashish Kumar
Dear AllI will be very pleased if any body give this book (C.C. Dell, Release Analysis - A New Tool for Ore Dressing Research) to my mail id:  ashishkmr.osme@gmail.comResearch InternCSIR-NML, Chennai...
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Started by Amar
Please guide me about the effect of water quality & water chemistry on flotation. We use methyl isobutyl carbinol (MIBC) as frother & amyl xanthate potassium (PAX) as collector. What is the effect of salinity on PAX & MIBC properties?
Last replied to by
Water quality is not a major issue in floating pyrite as demonstrated by numerous operations pH needs to be ideally controlled to the acid to neutral range and often copper sulphate is employed to imp...
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Started by Emmanuel Mmole
Hello!I am a BSc. Metallurgy and Mineral Processing Engineering student at the University of Dar es Salaam working on a dissertation project at ACACIA mining - Bulyanhulu gold mine limited.The project is entitled "Review of flotation behaviour of LO...
Last commented on by David
http://www.quadra.ca/uploadedFiles/Chemicals_Website/Industries/Mining/Huntsman.pdf OR http://www.flottec.com/Prd/Docs/Flottec_F100_Series_Frothers_Product_Data_Sheet.pdf The F173 is great.
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Started by Maya Rothman
The problem is that these units run under very different conditions to most primary cyclones, generally with lower % solids feed and a much tighter size range (P100 less than 300 microns). What we were interested in is predicting water and solids spl...
Last replied to by Rahil Khan
Innovative technology to reduce over grinding:After 20 years of experience in Flotation and grinding, we were given a challenging task by both Govt of INDIA and HZL (VEDANTA NOW). How to reduce silica...
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Started by Tarun Karakoti
What can be used to depress pyrite in sulphide ore without affecting copper recovery greatly? I am currently undertaking a project on the depression of pyrite, am trying to use aeration and milling at high pH. It’s proving to work but at the expens...
Last replied to by Sudhirkumar
Good to see your reply. Thank you. Come back after knowing liberation size. It should be 80% liberated, not 100%. Or else all particles will go in to submicron size which is very tough to float.Or Lib...
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Started by Sudhirkumar
What's your suggestion for pyrite depressant in flotation of Sulfide Lead & Zinc ore type? We are running flotation Sulfide Lead & Zinc ore type that has high dosage of pyrite in that ore. We depress pyrite with cyanide but it has a dangerous EHS e...
Last replied to by Raje Singh
Cost benefit analysis for liberating interlocked pyrite:Yes it was economical; by consuming few KW we could upgrade ore by additional 2%. From 50 to 52%Zn, and recovery by 1% which is highly economica...
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Started by Jean Rasczak
Anyone has case study on successful application of statistics for improving flotation plant performance. Using applied statistics to improve plant performance lots of opportunities out there.
Last replied to by Obersturmbann
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 to optimize a reagent su...
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Started by
It is a well-knownphenomenon that every operations metallurgist knows, that the full scale grinding circuit over grinds higher density minerals/elements in a manner that reduces the grade of those minerals/elements in the coarse size fractions and co...
Last replied to by Raje Singh
Yes this is a good IDEA. Yes we can use data from lab to plant. But it should be a PILOT PLANT with continuous operation for at least 4 to 6 hrs daily. Case study- We developed a flow sheet based on p...
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Started by Helena Russell
I was wondering if someone share if you have experienced the same problem.Every year when the temperature starts to drop (below 10'C) we experience a frothing andoverly stable froth problem on our platinum flotation (BMS float) circuit. What ever is...
Last replied to by Rahil Khan
Sorry we don't have experience at this temperature. But we did R&D in commercial COLUMN FLOTATION. Minute bubbles of 1mm were washed with shower of low pressure water on froth bed of 500 to 1000mm thi...
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Started by
Does anyone have any experience with using pyrrhotite depressants in polymetallic ore flotation? What products did you use and how effective was it?
Last replied to by
Cyanide depresses as carriers of copper. It is not recommended in the case of copper ores. The lime with the selective collectors is most advisable.
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Started by
I want to float arsenic from ore of this composition 10% Sb, 2.6 g/t Au and 0.78% As with differential flotation, what can I use
Last replied to by Oberstorm
10% Sb content in excavating Sb-ore? It is for manual sorting! I was fighting with 1.5% in my floatation plant - if we have higher Sb content we had to diluted inflow material into flotation plant (fo...
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Started by Amar
What do you suggest for improving the recovery in flotation of Lead in Lead & Zinc (10% vs. 25%) ore types that consist a high amount of Lead lower than 30um. Basically this ore consist of Fe minerals that rarely influence in flotation procedure. Th...
Last replied to by Obergruppenfuhrer
Technically -45 microns is smiles so in your gauge so discover those elements. Is it valuable elements for recoveries or for what do you determined those.

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