Laboratory Testing & General Mineral Processing Engineering

Laboratory Testing & General Mineral Processing Engineering 2017-04-04T06:57:51+00:00
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Iron ore tailing beneficiation method? (8 replies and 2 comments)

Trinadha rao
1 year ago
Trinadha rao 1 year ago

Hi & dear all, 

We have one million ton of iron ore tailing material contains 48-49%Fe and having size of around 80% of 10 microns material. we have carried out number of experiments on flotation and HGMS , as its having very fineness we failed to achieve good results. can anybody suggest, what would be the best operation to process those material ?

Regards, 

T T Rao

Javier Ramirez
1 year ago
Javier Ramirez 1 year ago

Dear TT Rao,

We have done testing work with a pilot plant for recovering residual magnetite from the tailings in a concentarator plant here in Mexico. The results were encouraging and a full scale plant installed. The client was Arcelor Mittal. The technology is now being applied for non ferrous gravity concentration.

Your iron ore is finer than the one we tested, however, I believe our gravity concentrators can do a good job. If interested, we could negotiate the know-how.

Regards,

Javier Ramirez

Trinadha rao
1 year ago
Trinadha rao 1 year ago

Dear Javier sir, 

  Thanks for your response. I forget to mention, we have also carried out some tests on spirals. I would like to know what kind of gravity equipment will gonna work out for these kind of material. If you don't mind you can share with me. 

Javier Ramirez
1 year ago

Dear Mr. Rao,

Liberated hematite sound pretty good for gravity separation with our equipment. The process is based on autogenous heavy media separation of the heavy hematite. The light gangue fraction is being elutriated. A two step gravity concentration process may work fine. I foresee an iron recovery above 80%, Testing work at pilot scale is recommended at this time.
Regards.
Javier

Trinadha rao
1 year ago

okay sir.. we will look for gravity process. but what kind of gravity operation we should choose ?

LBERNAL
1 year ago
LBERNAL 1 year ago
1 like by David

Can you indicate the content % of magnetite in the tailings. The process to be proposed depends on that.

 

Regards

Luis Bernal 

Trinadha rao
1 year ago
Trinadha rao 1 year ago

dear lbernal sir, 

 my material containing negligible amount of magnetite%, its having mineral hematite with 48-49%Fe, and high aluminium content, let say more than 8%. 

LBERNAL
1 year ago
LBERNAL 1 year ago

It is difficult but I think proper reverse flotation could work under following conditions:

  • use pneumatic cell like that used in moly flotation
  • high selective reagent scheme
  • modified amine collector for aluminum-silicates
  • CMC or starch depressant of hematite
  • two or three cleaning stages
  • low solids slurry
spsatyananda05
1 year ago
spsatyananda05 1 year ago

Iron ore tailing beneficiation method?

Suggestion: (1) I would say go for flocculation. We can get a good grade flocculation process of below 35 micron material. So, I think below 10 micron will results good too.

Suggestion: (2) Another process we can try, go for micro-pellets of 1% bentonite as a binder, Do reduction roasting followed by LIMS of those micro-pellets.

Trinadha rao
1 year ago
Trinadha rao 1 year ago

Dear spsatyananda sir, 

  •  It seems suggestion 2 costly procedure thats why we kept this process as choice. 
  •  I dont have much knowledge about suggestion 1. I kindly request you please provide any kind of data for reference. 

       Thanking you. 

dk
12 months ago
dk 12 months ago

Its real challange to process such iron ore fine material of 10 micron and below sizes . Normally desliming is done at such fine sizes .It will be better to take sample and test in different process routes like spirals/wet tables/ WHIMS  with different equipment and operating variables..

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