Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)

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Started by hydrometallurgictest
Good morning, everyone. I work in a mine where the ore has a high gold content. About 80% of this gold is recovered in the gravimetric stage (ore with high GRG) and the overflow from the cycloning feeds the flotation circuit with the following chara...
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Last commented on by hydrometallurgictest
Thanks for the answer. In the coming days we will be evaluating the dosage of the two collectors and the sparkling wine in our ore. Best Regards.
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Started by sayf-alawneh
I have an ore thats coming from 2km depth , this ore is pitch black since it has a very high content of carbon and it has natural oil also  and sulphides , an xrd test showed that the ore has a good content of ultrafine gold (100 g/ton ) at least an...
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Last replied to by Jorge
Gold deposits containing carbon compounds have a different behavior  during flotation. It is important to evaluate a flotation scheme for a particular ore. I am going to mention some possible alterna...
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145
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Started by BrendonTop
Been looking into why floatation isn't going well. So wanted to check on the ranges of the accepted Froude number for the floatation cells.
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141
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Started by BrendonTop
What are the conditions(agitator speed, air supply, dosage of senkol preferred pH etc.) used when using Senkol in floatation.
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Last commented on by BrendonTop
Noted with thanks. Will try to check with testwork . What about the time curing time? As effective flotation is being noticed in the Scavenger cells. Concentrate not covering the whole surface and as ...
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137
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Started by Millza797979
Has anyone got any papers on processing of native copper - either flotation or gravity separation?
Last replied to by Mike
Most of the work on native copper will reference the Michigan Kewanee operations which shut down in the late 1960's and all of them used gravity seperation (see Taggert Handbokk of Mineral Dressing se...
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Started by Beekay
I would like assistance with the possible reasons for Pb is reporting to the Cu concentrate in a differential flotation circuit. This happens across 6 ore types. All the 6 ores contain much more Pb (assay 0.5-3wt%) in the feed than Cu (assay 0.01-01w...
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Last replied to by David
Separating the type of head assays you have will never be easy.  Be sure you have adequate regrinding for each of your metal's cleaning circuit and enough adequate number of cleaning stages.
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247
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Started by Cueballmet
Hi, Fairly new to the flotation process. I'd like to ask for some insights in flotation troubleshooting. I work in a gold process plant with a rougher flotation circuit that concentrates gold bearing sulphides. Presently we are experiencing a notice...
Last replied to by Mike
Start with standard: pH and dissolved solids, then look at any trace chemicals such as depressants and such.   As to air flow make sure you are actually geeting the air to the impellers and that th...
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623
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Started by saeidar
Hello guys, I have a question about gold flotation. In a gold flotation plant, grade of feed, before ball mill, is 0.5 ppm but grade in cyclone overflow is about 1.2 ppm. I appreciated if you help me about the mentioned  grade difference. Also gra...
Last replied to by Mike
Cyclone oveflow being higher than cyclone feed is entirely normal, and indicates that the most of the gold is in the fines, which is what you want.  As to ball mill, are any recyle streams also going...
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259
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Started by ALBE
Hello, I want to float carbon black. I did a preliminary test: Solid content: 20% carbon black and 80% water pH: 3 adjust with NaOH at pH =7 Collector: diesel 0.2 kg/t Foaming: aerofroth 0.2 kg/t. Result : No foam. Can you please guide m...
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Last commented on by ALBE
SmartDog, The system is a DENVER D12 LABORATORY FLOTATION MACHINE. We performed the test with a 1L cell. We have the following equipment. https://www.911metallurgist.com/equipment/denver-d12-laborator...
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257
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Started by HUY DAM DUC
Could any one please show me that how the PH effect on mass pull of Nikel flotation? Thank you very much
Last replied to by Mike
There is not a specific answer as it depends on your specific ore, ore mineralogoy, local water and other factors.  But practice has shown that nickel flotation takes place best in a moderately oxidi...
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280
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Started by Seeker
Please help!I had ceramic capacitors weighing 50 kilograms. I pulverized them into a fine powder after removing their pins. The valuable metals palladium, platinum, iridium, gold, and silver are now present in that powder. Can I use the froth flotati...
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Last commented on by HUY DAM DUC
I am sorry Sir, I come from VietNam and I do not know where can I insert a question. Could you please show me how the PH effect on mass pull of Nikel flotation
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290
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Started by DY
Hallo, all. How I can prognos grade tails if grade ore will be changed? For example: Ore: 1 gpt, 100tph; Concentrate: 20 gpt, 4 tph; Tails 0,21 gpt, 96 tph.   What I get if ore will be 1,5 gpt, or 0,8 gpt? circuit not change.
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Last replied to by DY
Thank you. As far as I know. If grade in feed increases, then increase value of recovery and grade in tailings. In unofficial sources I saw formula where t2=t1*√f2/√f1. Unfortunately, I do not f...
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Started by ecublens
Hello, I am working on a high clay content metallic ore flotation. Although I did not add froather, from the moment I turn on the air, excessive foam is formed and the product overflows from the cell.The reagents I used in the tests are KAX, Na2S, C...
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Last replied to by David
Try to dilute (add water) your flotation feed as much as possible.
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296
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Started by sayf-alawneh
Hello i have  200kg catalytic converter powder which reading 50 ppm Rh and 70 ppm Pt , i wish to concentrate the powder using froth flotation mechanism, is it possible this way ? If yes, can you please provide me with some tips , i already have the...
Last replied to by Mike
While flotation is posible, since most of the metals in the catalyst are nano partilces the efficiency will not be very good.  Leaching would be simpler and more efficient.
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391
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Started by OratileM
How to reduce reagent consumption in the plant. Reagent includes Collector, Depressant, Dispassant, Frorth
Last replied to by themesmandu
oke thank you
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515
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Started by Boikanyo
I want to find out what determines the separation method in low-grade Cu, Pb, Zn ores? What determines if the separation should first be bulk flotation followed by selective, or if it should be selective from the onset? Please recommend articles tha...
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Last replied to by Jorge
I think, it is important to define a low-grade ore. Polymetallic operations are used to adopt a different approach to consider an economic low-grade material. Probably, there are two key factors to ev...
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462
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Started by ecublens
Hello everyone, How can I simulate a locked cycle using the data of the open cleaner flotation test with Microsoft Excel ?
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Last replied to by David
You don't. It is technically incorrect to do that. You must perform the LC test.
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676
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Started by ecublens
Hello, how to convert g/ton to cc? For example, I have a 1% KAX solution. I will use 30 g/ton of this, how many cc do I need to add?
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Last replied to by chemtoli
Dear Boyd, Where can I find Tables for Flotation Reagent Equivalents in SI Units. 
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1184
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Started by Pavaldiv
Hi,  I'm doing lab flotation testwork on a sulphide ore containing copper and zinc. The grade of the material is 5.7%Cu and 4.8%Zn, the main minerals in the ore are chalcopyrite, sphalerite and mamartite. It doesn't appear to be presence of oxidize...
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Last replied to by Boyd
Sequencial float: Assuming all the physical parameters are ok, try to do float tests with SMBS at lower pH values between 4 and 6.5 and target 8kg/t of ore or less to depress Zn and float Cu. refloat...
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Started by Alex Loutou
Hello,I am currently working on a small gold processing flotation. An old mine which was rest for many years and started again in 2020. Mill feed grade: 150 TPD, Au 2g/t (rec 65%), Ag 100g/t (60%), Cu 70g/t (40%) The rougher machine is from xhin h...
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Last commented on by Alex Loutou
Thanks Jorge, I will work to see recovery cell by cell, as you said maybe there are some problem with mechanical. Cheers, Darrel
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Started by ecublens
Hello, I have rougher flotation results. How can I determine how many stages of cleaning and scavenger flotation should be done according to these data? Is there any procedure for this?
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Last replied to by Jorge
If you performed rougher flotation tests and the results are acceptable, the next step to perform cleaner test. The key considerations are listed below, - It is necessary perform a new rougher test w...
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682
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Started by edson360
The PAX and Aerophibe dosages  upon 1000kg materials treated in roughing stage are 21mL to 7mL and 2mL to 8 mL respectively. The Aerophibe and CMC upon 1000kg materials treated in a  cleaning stages are 2mL to 6mL and 5mL to 15 mL
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Last replied to by Jorge
I imagine you determined the optimum particle size before trying to evaluate the effect of collector on copper and gold recovery. If not, you should do it. Although you did not mention the copper gra...
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654
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Started by Gomolemo Thembo
Which collector is the best for floating the chromite fines from the tailings dam?
Last replied to by Mike
Generally either fatty acids or akrylomides are used for chromite, BUT... the actually selection is dependent on water chemistry,  mineralization of the chromite, other mineral specieces present, and...
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Started by Arip
Hi Guys, I am designing a CIP circuit for a plant in Tanzania, the lab PPM report has these results Ag 45, Cu 17, Fe 22,000, S 215, Mn 84, Au 10 Is there a need to put up a frother to remove the Fe before the CIP circuit or a magnetit machine will ...
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Last commented on by Arip
We have not done lab test for leaching, the issue is the iron oxide how do we treat it before leaching, maintaining copper above 10.6ph hinders copper being leached into our cynade solution
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Started by rgov1992
Hi all,   I would like some advice on how to improve froth stability and pgm flotation performance at low pulp densities of about 10% solids. Thanks
d
Last replied to by David
what frother are you using?
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1157
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Started by Aldry
Bonjour! je travaille sur un minerai  qui contient le cuivre sulfuré mais je fais face à un problème, c'est que mon minerai contient une grande quantité de carbones organiques qui me pousse à faire une pré-flottation et la question est de savo...
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Last replied to by David
Seulement du MIBC. Tres bas volume.
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886
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Started by Brian benedict
I am working at a mineral processing laboratory my problem is we want to analyze an oxide ore containing nickel and so i am searching for a geochemical analysis of nickel and a proper design and parameters for froth floatation of nickel including dos...
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Last replied to by Jorge
A flotation testing program on nickel ore with an important degree of oxidation should evaluate the effect of sulphidization. The typical reagent is NaHS. The collector is a xanthate, Potassium Amyl X...
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Started by Maryam
Recently we received a bad quality of NaHS (red color), I need please to know the specifictions of the NaHS reagents which impact the sulphidation of oxidized copper.. if there is someone who can help me
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Last replied to by Jorge
Sodium Hydrosulfide (NaSH) is a light-yellow colored solution with a pH of 11 to 12. The usual strength is around 42% w/w and has a rotten egg smell. It is necessary to prepare a solution (e.g. 20% w/...
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Started by Teggry
Hi, I am setting up a intrinsically safe zone for our PAX mixing and was going to put a spill kit in the area. I was told by a metallurgist that a Hydrocarbon Spill kit would do as opposed to a chemical spill kit. Is this plausible?
Last replied to by Mike
It really depends on what you are storing and using.  First off there are three main types of spill kits, hydrocarbon, chemical, and general purpose.  Hydrocarbon kits are general kept around furl ...
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994
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Started by Boikanyo
I conducted rougher Cu-Pb-Zn flotation tests and would like to calculate the recovery of the target metal in each circuit (example: Cu in Cu-circuit) as well as the % wrongful recovery of the other 2 metals (Pb and Zn in Cu-circuit). During testing I...
Last replied to by Mike
If you use feed, concentrate, and tails in the calculation, you will seldom (read almost never) get 100%.   This has to do with with timing of the recovers and other factors such as accuracy of assa...
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Started by joshuasungsu
I am working for Cu/gold mine. We have an unusual high mercury in our concentrate. We had below 1 ppm mercury but we had over 40 ppm mercury. Do you know how to depress mercury in the mill?
d
Last replied to by David
Whatever mineral it is associated with, that mineral you need to avoid locking with your copper. Do you have a regrind?  Get liberation data on that side also. Your rougher concentrate needs 97% FREE...
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Started by luiswesmoles
Hi everybody. In my work, I´m using a Betachem´s Bikerman equipment to measure the heigh of the froth bed. Also, I want to measure the bubble size. I´m taking photos at every test that I do, but when I want to process it in a software (ImageJ), I ...
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Last replied to by David
have you tried any of these?
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902
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Started by Yrstruly
Can somebody please assist. I have the following data and need to present it visually. How and where do i start? https://drive.google.com/file/d/1uFf0W5qw1YuG07xWJ8U3rYx7NGUFtCIo/view?usp=drivesdk And https://drive.google.com/file/d/1uCPMV8x21Iyvt...
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Last replied to by Todd H
Identify the variables that impact the outcome - like those shown in your third link.  Then aggregate the data into groups for each test set. Usually you want to look at the data as it impacts recove...
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Started by waleed
Dear All, Can any one suggest me best alloy/Material that can be used in 60% concentrated sulphuric acid and sustain at 300-500 F temperature..? our Industry Purpose, usage of hot oil in tubes of that material to generate heat, this tube will be d...
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Last replied to by Jorge
I think you can evaluate the potential application 904L stainless steel, which is a super-austenitic stainless steel. This kind of steel includes the presence of copper to greatly improved resistance ...
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Started by mardin
Hi Dears, Can anyone help me about the processing of lead whose minerals are serosite and contain more than 20% iron? The lead grade about 4% .  
J
Last replied to by Jorge
At that time, you did not provide all the information (e.g. K80, flowsheet), your position is understanding. Probably, to avoid to share many data, you should contact a met lab. 

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