Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide) 2017-04-04T06:57:31+00:00
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Started by Anzick Rex
It has been a common trend in flotation that the recovery of fine and coarse grains is low... I was thinking of using selective flocculation as a pre-treatment process to increase the recovery... is this possible?
Last commented on by Anzick Rex
Thanks David for responding.... I'm working on a phyllite mineralogy with pyrite as the predominant sulfide mineral... the metal is Au and the phyrite is barren (depressed at pH 9.5-11) but the gangu...
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Started by Azadeh
Hi I try to process galena and sphalerite ore in grade of 6% totally in flotation circuit. In this ore, the oxide part is about 2 -2.5%. so the overall recovery is low especially in sphalerite circuit. How can I increase the recovery of oxide part t...
Last commented on by Majid85
I am in Zanjan and This was my last job.
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Started by Tate
Im recovering an old tailings dump using froth flotation . The circuit goes in this order Milling - flotation- thickening - CIP - Tails .how do i get rid of the froth bubbles from getting into the CIP section as these are posing huge problems even at...
Last replied to by Tate
Woow thanks guys. Give me a week and i will share the feedback. Kind Regards
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Started by Adimulu
Dear All I troubled to fine literature on the production SOP fertilizer from sylvinite/carnallitite and kainitite. I want to understand the chemical rexn took place during decompostion and formation of SOP.
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Started by Hugo Delgado
There are different flotation circuits designs, each one different from the other, so, when we talk about flexibility on flotation circuits designs?, how can we know that? On the other hand, how can we measure the resiliency on this circuits? These ...
Last commented on by Azadeh
Thanks for your complete explanation.
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Started by marco.gerolin
Dear all, I'm about to start to conduct some experiments on froth flotation to separate some fibrous silicates form sand (which is still silicates sadly). SInce I have no experience with this technique I would like to ask you which could be a good c...
Last commented on by inOr
Marco, I don't think you are going to find affordable industrial chemicals fromm Sigma-Aldrich the usual handul of 'fine chemical' manufacturers. You need to find a supplier of bulk industrial chemic...
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Started by InsideMet
Hi All, I have developed a flowsheet to treat a copper sulphide ore that contains a significant level of talc. The flowsheet calls for doses of carboxymethyl cellulose (CMC) in excess of 300g/t to produce a saleable concentrate. The CMC will be purc...
Last replied to by David
Did you see https://books.google.ca/books?id=s4SsrmvEc7QC&lpg=PA154&dq=CMC%20Mixing%20System&pg=PA153#v=onepage&q=CMC%20Mixing%20System&f=false and http://www.inoxpa.com/products/product/mixing-uni...
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Started by mardin
I am working on a project to improve the flotation recovery of a mine. The mine is a lead and about 70 - 80 percent of the feed is a oxidised.  How can i improve the oxide lead flotation recovery?  
Last commented on by Josh Wright
If you have lead sulfides, I would float those minerals first. Then if you are floating zinc sulfides (not sure if this is applicable to you), I would float these next. Finally, I would float the lead...
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Started by JohnMills
Dear All, I want to carry out a pilot experiment for Zinc ore. Zn content is 10-20% with lots of Fe and Si. Could anyone kindly recommend the cheapest and best reagents for this type of ore? Many thanks! John
Last commented on by ChrisBucknell
The Zn will be oxidised in the slag so that will be difficult. Sulphidsation may work. Hydromet remains an option but gelling may limit it.
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Started by CenkUretencan
Dear colleagues, From which companies I can get commissioning sevices for the medium scale copper flotation plant, I would request commissioning plan, procedures etc, and on site services. I know such services could be provided by the giant enginee...
Last replied to by Todd H
Did you find a suitable company to help with commissioning?  I work for a small engineering company and could assist with the work. I have commissioned a lot of plants and have worked all over the wo...
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Started by peter.wilkinson
Are you able to advise the supplier of the reagent PE26 (mixture of CMC and guar)?
Last replied to by Nathan Sudom
You bet.  It's been used in the potash industry for quite sometime and lab testing has shown promise for it in certain copper/nickel flotation applications.  Testing has shown it to outperform PE26 ...
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Started by Pabloski
Hi people! I need some advise, or comments, on flotation processes strategies based on froth height control. If there is any process around that uses this type of control, or any paper topic related would be very much aprecciated. Thanks before ha...
Last replied to by Peter J
150micron is certainly a large size to float.  I suspect you need a stronger frother so that the bubbles don't break and the particle is carried to the overflow lip.  If you are not using "Dowfroth2...
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Started by artem89
Hi i need manual and list of equipment for pilot froth flotation 
Last replied to by David
I offer the newer: https://www.911metallurgist.com/equipment/flotation-pilot-plant/ https://www.911metallurgist.com/equipment/laboratory-flotation-column/
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Started by Robert
The effect of water quality on flotation is a common issue when designing and when operating concentrators. Liu et al. (2013) reviewed existing studies on water quality variation in flotation and developed a framework and analysis around three aspect...
Last replied to by Robert
Another useful summary of the impact of water in flotation was provided by the following paper: Levay, G., et al., The impact of water quality on flotation performance, JSAIMM, vol. 101, 2001, 69-75 ...
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Started by VictorP
Hi,  I am planning to lower the height of the vents in the blower room that supplies the air for the flotation machines, however, I wanted to see if there was any reason for the vents being designed so high (about 4-5m high). Reasoning is to make t...
Last replied to by David
Victor, the blower intake is up high so that ground borne dust and other contaminants dont enter the system. people walking etc etc = cleaner air
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Started by Bobson
My plant uses a rather unusual pH 8 Galena-Sphalerite bulk float. Main contaminants of concentrate in the form of Silica, Magnetite, Pyrrhotite and Fe amphibole.  Very high degree of liberation with minimal lockings - Entrainment is in part respons...
Last replied to by Bobson
We adjust the pH with sulphuric acid, use SIPX (sodium isopropyl xanthate) collector and Nasfroth 240 frother. The majority of reagent dosage happens at the head of the circuit.  The contaminants ar...
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Started by MineralFrothFlotation
Brightness of feed talc is in the range of 65-70 and color is grey . Objective : Final concentrate brightness >= 85 .  
Last commented on by MineralFrothFlotation
thanks Frank . I will conduct a flotation test work with alkyl hydroxamates and check the parameters ....
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Started by Pabloski
Hi peps! Is there anybody here that has done froath height tests to give me an idea to do one at the lab? At the moment I have a 4L transparent flotation cell available, so I was thinking of floating at different pulp heights, at differents stirring...
Last commented on by Pabloski
What your experience says?
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Started by Pabloski
Hi people, I want to undergo a flotation test to analyse the impact of froth depth over recovery, as well as the impact of air flow and rotor speed. My question is: What ways do I have to modify froth depth? Any recommendations on how to approach ...
Last commented on by Pabloski
Thanks for the input, Frank.. It makes a lot of sense, it will help me to know how am I related to my FEH. Could this FEH be calculated using standard frother dosage and measuring its height? and the...
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Started by artem89
Hello, my name is Artem Kurnev. I work in CETCO in Russia, in our research center we have canadian process technologies flotation machine. We dont know, how to configure control box? If you have manual, please post it here. Thank you so much
Last replied to by David
This one comes with a manual https://www.911metallurgist.com/equipment/laboratory-flotation-column/
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Started by Buka
I am working on a project to improve the flotation recovery of a mine. The current flotation recovery of that mine is 80% gold and 85% silver. Blending is done at the ratio of 75% oxidized ore and 25% fresh ore. How can i improve the flotation recove...
Last replied to by Robert
Characterise the ore: How are silver and gold present in the feed for major ore types- free, as mineral(s), liberated, locked, data by size, etc. How is gold present in the tailings for major ore ...
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Started by jayanath
how to remove/reduce iron oxide, aluminium oxide and chloride content in rock phosphate (apatite) by using froth flotation method. what type of collectors should I use?
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Started by Rezaghogha75
Need to float Cobalt from a Cobalt/pyrite slurry which has too much lime in it. what is the best acid to use for that? any specific methods suggested? I need to obtain 100 Kg of Cobalt concentrate Cheers
Last replied to by BAUD
The selection of the best treatment method for a particular mineral depends largely, among key factors, on the knowledge of: -the geology of the deposit, -the mineralogy of the ore  -and the distr...
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Started by Floatsumcon
Thanks in Advance. Currently facing float recovery issues with a long term stockpile having patches of medium / heavy oxidation of sulphides in gold ore. head grade 1.8 - 2.8g/t. Ore is  presenting black sediments ( gold in carbon)   @ 20 - 25% ...
Last replied to by David
It depends on your ore.  ORP drives it. In the laboratory, this have worked for me: read this also https://www.911metallurgist.com/froth_flotation/controlled-potential-sulphidisation-cps-demand
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Started by a.eslami
Hello  recently, I am working on processing of a gold bearing mixed oxide-sulfide copper ore (Av. Cu; 0.80 & Av. Au; 0.2ppm).  After some research and testing different methods, I found Controlled Potential Sulphidisation (CPS) Flotation as the...
Last replied to by David
Hi, my contact at http://basemetlabs.com/ gave me a couple of things for you: Not all copper “oxides” are equal.  Carbonates Azurite and Malachite respond really well to CPS.  Cuprite, not as ...
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Started by Niget T
I need something non toxic to suppress molybdenum and recently read Chitosan was tried, does anybody have information on this?
Last replied to by David
Hi, suppress molybdenum from what? Describe your situation please.
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Started by Olga
Hello everyone! I am doing PFS for sulfide copper and copper-zinc ore and according to our preliminary investigation, we get Cu concentrate with recovery 88-90%.  Does anybody knows worldwide deposits of the Sulfide copper ore or copper-zinc ore w...
Last replied to by anbesa
Thank you so much for your acceptance my request.  This is my first time to meet your website, in fact it is interesting and nice looking. I have a question about the flotation of ultra fine copper a...
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Started by spaceexplorer
Are Oxide Ores Generally Amenable to Flotation Process? Hello All. How amenable are oxide ores to flotation process? We are considering developing an oxide ore deposit with average grade content of 2.4 gpt and 650 gpt (Au/Ag) respectively. Recent...
Last commented on by Frank
I agree with the comments other than to say that oxide flotation is not difficult but I am not sure this has much to do with whether you can float oxides or not. The steps that you need to take are ac...
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Started by Fati
Could you please suggest me some depressants that depress only carbonate and not apatite minerals
Last commented on by Fati
Thank you Marshal Meru for your answer, it's an interesting article... but I'm looking for carbonate depressants because I'm planning to direct float apatite while depressing carbonate minerals.
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Started by celestin
Dear all, We are in the oil an gas industry and we use a WEMCO flotation cell to recover oil from the produced water before discharge using polymer. In order to protect the vessel angainst corrosion we thought of installing Anodes but We do not kno...
Last replied to by David
Hi Celestin, I checked with a guy smarter than I and his answer was "I've never seen a Wemco cell with a cathodic protection anode installed.  Not sure, but cells may be constructed using low-grade ...
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Started by MINERALSTZ
Can somebody tell me about the synergistic effect of combining pine oil and MIBC (Methy Isobutyl Carbinol) during flotation of chalcopyrite? if possible,one can give me some reference books so that i can get an extra knowledge also if one know some...
Last commented on by MINERALSTZ
thank you BAUD,
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Started by Subash
we are doing potash flotation and need help to increase in recovery. we are getting variable flow and varying solids percentage. any method to adjust the same in flotation cell
Last replied to by Nathan Sudom
Hi Subash, are you having trouble obtaining a clear brine?  Is this affecting your potash recovery? 
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Started by MineralFrothFlotation
Pls. suggest which type of flotation cell is more preferable for TALC Beneficiation. Like; Horizontal flotation cell (forward flotation), vertical column flotation cell, hydro flotation or any other . Input Talc brightness is 75-76 . and we want to ...
Last commented on by MineralFrothFlotation
Thanks Mr. Bob . Actually company like Mondo Mineral is dealing with talc and adopted froth flotation process long ago . if anyone having idea about that , pls. suggest
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Started by omer.canieren
Hello, I'm conducting a study on gold flotation where I will use xanthate as a collector reagent. In this regard, I encountered a problem that is the xanthate is covering mineral surface with help of chemical adsorption. After that cyanide solution ...
Last commented on by omer.canieren
Thank you dear friend.
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Started by wabeymet
how can I know that my reagents are affecting my recovery rates. I do hear reagent trap but don't know how to identify the situation or solve it. also will like to know the positive effects and negative effects of various reagents.ie collectors,mod...
Last replied to by David
Also: https://www.911metallurgist.com/blog/flotation-reagents https://www.911metallurgist.com/blog/laboratory-flotation-testing https://www.911metallurgist.com/blog/flotation-recovery-cumulative-gr...

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