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Separation Science and Technology Volume 50, 2015 - Issue 8
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Magnetic Separation

Roasting Followed by Magnetic Separation: A Process for Beneficiation of Titano-Magnetite Ore

M. S. JenaCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, IndiaCorrespondence[email protected]
,
H. K. TripathyCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India
,
J. K. MohantyCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India
,
J. N. MohantyCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India
,
S. K. DasCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India
&
P. S. R. ReddyCSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India
Pages 1221-1229 | Received 07 Apr 2014, Accepted 11 Sep 2014, Published online: 07 May 2015
 
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Abstract

Titano-magnetite is an ore of iron and titanium, and is highly magnetic. Magnetite and ilmenite are two major minerals. Ilmenite exhibits various textural dispositions. Widmanstatten and granular exsolution textures are important ones exhibited by the constituent mineral. Reduction roasting followed by two-stage LIMS gives a magnetic concentrate of 65.74% Fe at a yield of 61.22% with 78.07% Fe recovery. Also, a by-product having 28.76% TiO2 at a yield of 20.08% with 36.78% TiO2 recovery is produced. The concentrate (rich in magnetite) can be used as heavy media in coal washeries whereas the middling fraction can be taken for Ti recovery.

ACKNOWLEDGEMENTS

The authors are thankful to the Director, CSIR-IMMT, Bhubaneswar for his kind permission to carry out this work at CSIR-IMMT, Bhubaneswar.

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