Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering

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Started by nchekkars
Hi,  I am in search of standard symbols for mineral processing to use in process flow sheet diagrams. Jaw crusher, SAG Mill, Ball Mill, cyclones, Slurry tank, Floatation cell, Thickener and Filter press. Thanks Navin
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Last commented on by Padre
Thank you
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Started by Henley Munn
G'day does anyone have a test procedure they'd be wiling to share for intermittent bottle roll tests to model heap leach recovery performance? Thanks
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Last commented on by Zeynep Guven
hello Henley Munn, Have you found a procedure like you mentioned? can you send me?
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Started by fkasis
I need a method to determine the slag content of a jig product that consists of high carbon ferrochrome alloy and slag.
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Last commented on by fkasis
Thank you but what Im looking for is the step by step process for the assay e.g what chemicals to use
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Started by Tende
Good day,I am a PhD student, doing my research in Froth Flotation. I am currently polishing my flotation skills (batch flotation cell) for my project. One thing I am battling with is to maintain the froth height constant, especially when it comes to ...
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Last replied to by Jorge
You have two options, the first one is to use an acrylic tank cell to see the slurry level and froth height. In this way to can add water to maintain an appropriate slurry level. The second option is ...
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Started by mardin
Hi Dear What is the best designing for Lead processing if the feed grade is about 7 percent ( Galena) and concentrate grade is 40 percent?
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Started by FarshidBsr
I am working with a project involving a bentonite powder for pelletizing plant. 0-50 mm bentonite is dried in dryer, and milled with ring roller mills to produce a bentonite powder with P80=45 um. The bentonite water absorption drops from 449% to 323...
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Last replied to by Jorge
Try to get a detailed particle size distribution from the roller mill and the lab pulverizer. The production of fine particles could be different. 
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Started by kalpesh
What is process  followed for making bleaching clay from bentonite. which machines are required ?
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Started by ALanyon
G'day, I've been doing some sizings from our pulverizers to attempt to find why we're getting high variation in our lab results. 2 of our pulverizers are over pulverizing creating quite hard lumps. My concern is that this may be affecting our sulp...
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Last replied to by SURENDER PAL
There is production loss of Calcium molybdate in our plant .Please Help us
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Started by Fatemeh
We produce steel casting liners for SAG/Ball mills. One client in Iron ore mine is using rod mill in first stage grinding. The shell liners are rolled steel and work for 7 months. Now they want to switch to cast liners and ask for a proper material i...
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Last replied to by David
Well typically a SAG Mill liner is in Chrome Moly Steel (Brinell Hardness 301-402) and Rod Mill liner would be in High Chrome Iron (590-750 Brinell). https://tinyurl.com/y7wdgf3b https://tinyurl.com...
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Started by Math Nope
Hello, I need to know how to process tin ore containing stannite (Cu2FeSnS4) mineral. If you have some process flow diagram or something else will be appreciate. Thank you.
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Started by christian2020
Please gentlmen,best Metal detector(s) to distinguish & remove silver scrap from poor mix silver gold ore screened ?
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Started by arsi315
I have 2 different steel material and got them both tested and following are the results. However I am not sure which steel is better from both of the comparison. If anyone can help me out to identify it, I will really appreciate it.Sorry for the bad...
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Last replied to by BAUD
Hi, Please, can you tell us what you want to do with these steels. The application of the material will guide you to choose which properties you should focus on. It is good to have the chemical compo...
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Started by Pillai
i have done many bottle roll trials with the same feed of the CIL/CIP tanks but bottle roll trials give lesser recovery than CIL/CIP 's recovery. Anybody had the same situation? any ideas?
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Last replied to by Bhaduri
Richard is correct. In general, the reverse situation is true viz. lower recovery at the plant, You might want to corroborate the following stepwise & check plant slurries for the same: a) Grind size,...
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Started by Oscar96UIS
How can I determine the acidity of an ore?. Where can I get more information about that.
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Last replied to by Bhaduri
Dave is correct; however, the most accurate procedural would be to perform a Leco C & S for organic/inorganic C & elemental/sulfide/sulfate S; very simplistically, the neutralization rxn may be repres...
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Started by MAP
How we could test a bentonite ore(clay) to determine if it is good for production of acid activated bleaching earth?
Last replied to by raghdmuhi
dear Mr. Pazokian Try read the attached file for big beatification, dont hesitate for any information you want best regards
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Started by markoramiusiii
Are there any settling test procedure specific for flotation concentrate pulp? I am currently testing optimal floc dosage of column flot concentrate, fed to a concentrate thickener and encountered problems such as frothy samples which makes it harder...
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Last replied to by Todd H
Concentrate should settle relatively easily if you are using the right reagents.  Froth is certainly an issue with conc but it should not impact your settling tests, in terms of interface determina...
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Started by adityakale
Gold loss in carbon fines is a major concern for gold mines. I am looking for percentage of carbon fines generated during regeneration of carbon in rotary kiln. Anyone data available from industry?
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Last replied to by rob riggir
Hi Adityakale - you are correct in that a rotary kiln with a screw feed conveyor is not the best for minimising carbon fines generation. however, if you have one installed there's not much you can do ...
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Started by owor laban
Hello Members, Please I request for guidance through  comments  I have done some sampling in Wolfram deposit and I encountered wolfram average  grade of 0.05% and tailing grade of 0.03% Ta . Please guide me here can 0.05% W  can it  be minable...
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Last commented on by owor laban
Hello Rob I used Ta symbol for stand for tailings. The wolfram in tailing was 0.03%W while average of wolfram from outcrop samples was 0.05% W is the 0.05% W grade from outcrops minable?
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Started by iron_pirate
Sample was taken from surface, curious if from this assay is this ground worth the time to stake.  
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Started by owor laban
Hello Members, please i'm developing tungsten mining and processing project with an average grade of 0.28% with gravity separation, the reserves estimates proves to be big(35Mt)with artisans present in the area as well. i therefore your guidance and...
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Last commented on by owor laban
Hi Trever, Mineralogy is reinite(scheelite) replaced by ferberite with low Mn0 content. It consists of sheeted zones parallel quartz veins with stringers in carbonaceous wall rock(sandstone, shal...
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Started by Dadson
I have a proposed pilot project for copper processing (Azurite and Malachite). Capacity for the project is 5 tonnes per day where we want to do heap leach and tank leaching. Type of acid to be used is dilute sulfuric acid. My inquiry is whats the opt...
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Last replied to by David
Dear Dadson, I will try to help for your project : - Crushing size for heap leaching feed. § 99% of the heap leaching feed should be having a size passing a screen of 1 mm. F99 is 1mm. - Extracta...
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Started by jyang
I am looking for any suggestions/input on methods to more completely digest a nickel laterite sample. Currently, my lab is using an aqua regia digestion using 5 g of pulverized sample (-200 mesh) with 25 mL of aqua regia on a hotplate. We have been h...
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Last replied to by Todd H
When you complete the aqua regia digestion how much solids are left from the original 5 grams?  You should be filtering the digestion prior to dilution and running on the AAS - I am sure you are. Th...
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Started by bolka
hi all one of my colleagues asked a question about series some slurry pumps with various sizes like as combination of 1*6/4 AH WRT pump with 2*4/3 AH pumps in one series!! i think its very strange but is it possible combine various sizes of slurry ...
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Last replied to by Mike Rockandel
When selecting pumps there always is give and take. A larger pump at low rpm or smaller pump at high rpm. A series of pumps geographically spaced could have different head requirements due to contours...
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Started by Jeffreybch
Hi, I am currently producing gold concentrates. I'd like to be able to classify them so I can sell them in the close future. A few weeks ago I was able to buy an "iCE 3300 AA Spectrometer" (Thermo Scientific), which is now installed and ready to ...
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Last commented on by Jeffreybch
Thanks!
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Started by ssaeed
I work for a company that is constantly doing total digestions and sequential copper analysis for different ores from around the world. A question that has come up is, what is the appropriate size of the pulverized material to conduct these tests? Cu...
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Last replied to by ssaeed
To update this question, I guess what the real inquiry was, what is the correlation  between a sample crushed to a particle size of
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Started by ssaeed
I am looking up Sulfur standards for ICP-OES and most of the standards offered are prepared in a water matrix. I have only ever seen standards prepared in what's usually a 2-5% acidic matrix. The sulfur standard we currently have at my job site is an...
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Last replied to by uboservices
Hi, you may find sulphur standard in water from: https://highpuritystandards.com/100054-5-1000-g-ml-sulfur-in-h2o/
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Started by Judeila
Dear Sir/Madam, Good day! I would like to request for your assistance in selecting inline instruments (brand/model) in measuring % solid (ores) and water in Filtration process of mining plant. Its output signal will be monitored by controller and d...
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Last replied to by TonyE
https://www.rhosonics.nl/models/sdm-slurry-density-meter/
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Started by anjanisail
During designing the flow sheet of Iron ore Mines I encountered a problem. Initially during the sampling of ore from its faces of mines it was decided that Feed grade of the Iron Ore was like Fe= 63.2% Sio2= 2.8% Al2O3= 2.9%. Fe value fixed for the ...
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Started by Munyabrwn
Greetings Metallurgists, I recently got 2 job offers as Graduate Trainee/Learner  from a gold mine and the other from a diamond mine. So my question is which is the best route to take and why ? I hope to hear from you soon.
Last replied to by David
Gold
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Started by Dannyoung
Please, i have been given just the mill throughput of 300tph of a free milling gold ore to estimate the capital cost for purchasing and installing comminution and CIL circuits. Kindly assist me.
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Last commented on by Dannyoung
I needed the list of major equipment and the direct and indirect estimated costs.
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Started by Fachrifaa
Hello Guys! I wanna ask something silly yet it's disturb me,  can someone suggest what sampling method i should use, if there is a 100 Kg of ore, and i want to do a leaching test with only 0,15 Kg / Leaching test. is it ok if i split it to 12,5 K...
Last replied to by Bob Mathias
Best split 'till the weight of the ore is 150 grams. Better yes is to do your leach test with 1000 grams
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Started by SaveMetals
Hello All,  I am trying to separate two different aluminum alloys in scrap that I'm processing where one alloy is significantly more pure (higher value) than the other. At the moment I'm thinking of trying to rod mill to reduce the size of one frac...
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Last commented on by denverphil
Oops, could blow less far if surface area high. It doesn't really matter so long as one goes further.
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Started by Aldeenor
Hello All! I am a newbie in this silica sand and washing things. I have a few very basic questions below. I hope all the experts in this forum can help me out. What does it mean when somebody is asking for Silica Sand with 99.5% SiO2? What is the...
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Last replied to by Unterstarm
Hi Aldeenor I will try my best to answer your questions and thanks for seeking help, it is a strong point but still that is not the answer to your question 1. Silica sand with 99.5% simply means tha...
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Started by Chewe
Good morning. My question concerns how to determine scale up factor of agitation leaching vessel in a leaching cascade. I'm doing leach tests for cobalt recovery from slag but the problem is in a batch vessel i'm using in the lab i have observed some...
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Last replied to by Chewe
Thanks Todd. I have also observed that material gets stuck behind the baffles. Which makes me wonder if they're really that relevant if you can achieve a perfect solid suspension. The idea of using pu...
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Started by Tsaone
Is it possible to recover a flocculant in a slurry after water separation?
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Last replied to by Tsaone
thank you guys. but since you guys says flocculants breaks and lose structure, what about polyampholytes? because many of the have have self healing feature and high tensile strength. Or the forces w...

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