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Thermal Reduction of Ilmenite Concentrates in a DC Transferred-ARC Plasma Furnace

Published online by Cambridge University Press:  25 February 2011

A. D. Brent  and
K. J. Reid
A. D. Brent
Affiliation:
Council for Mineral Technology (Mintek), Private Bag X3015, Randburg, South Africa (Presently at University of Minnesota)
K. J. Reid
Affiliation:
Mineral Resources Research Center, University of Minnesota, 56 East River Road, Minneapolis, MN 55455
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Abstract

The thermal reduction of ilmenite to produce a high grade titania slag and pig iron byproduct using a d.c. transferred-arc plasma furnace has been investigated. Small-scale (50 kVA) batch tests were conducted on three different ilmenite concentrates of widely differing chemical compositions and geological histories to assess the suitability of this reactor configuration for ilmenite smelting. The effects of reducing agent particle size and excess carbon on slag grade, titanium and iron recoveries, and reducing agent efficiency are discussed. A d.c. plasma furnace appears to be an ideal reactor for ilmenite smelting, although accurate control of the furnace thermal balance is essential if reaction between furnace refractories and the titania slag is to be avoided.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 98: Symposium K – Plasma Processing and Synthesis of Materials II , 1987 , 399
Copyright
Copyright © Materials Research Society 1987

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References

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