Combined sulphation-chlorination roasting of oxides

Rajmohan, N and Jacob, KT (1992) Combined sulphation-chlorination roasting of oxides. In: Minerals Engineering, 5 (2). pp. 235-243.

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Abstract

The feasibility of extracting metallic values in the form of chlorides from low grade multimetallic lean ores using SO2, O2 and NaCl as reactants is analysed from a thermodynamic point of view. Gangue materials such as silica and alumina do not react. The oxides of most other metals react to form chlorides. The volatile chlorides can be condensed. The chlorides present in the condensed state can be leached. An efficient separation of the metallic values from the gangue is possible using a combined sulphation-chlorination roasting process. Use of sodium chloride as a chlorination agent is attractive because of its non-toxic nature.

Item Type:	Journal Article
Publication:	Minerals Engineering
Publisher:	Elsevier Science Ltd.
Additional Information:	Copyright of this article belongs to Elsevier Science Ltd.
Keywords:	Beneficiation;multimetallic deposit;low grade oxide ore;NaCl;chlorination;sulphation;recovery;extraction;base metals
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	20 Mar 2008
Last Modified:	19 Sep 2010 04:43
URI:	http://eprints.iisc.ac.in/id/eprint/13488

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