Use of CaC12 as a chlorinating agent for oxides - A thermodynamic analysis

Rajmohan, N and Jacob, KT (1992) Use of CaC12 as a chlorinating agent for oxides - A thermodynamic analysis. In: Minerals and Metallurgical Processing, 9 . pp. 141-145.

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Abstract

Presented is a thermodynamic feasibility analysis of extracting base metal chlorides fiom low-grade,multimetallic oxide ores using CaClz as a chlorinating agent in the presence of SOz undoz. The oxides react to form corresponding chlorides, while CaClz is converted to CaS04. The Ellingham diagram is usedfor comparing the standard Gibbs' fiee energy chanlpef or the su(fation-chlorinationr eaction of a large number of oxides. Except for alumina, silica and chromia, most of the other metal oxides will be converted to their respective chlorides. The volatile chlorides can be condensed, and the chlorides present in the condensed state can be leached. A process is proposed that uses a nontoxic chlorinating agent and gives an eficient sepurutiort cftlte metallic vuluesfr.om the garlgue.

Item Type:	Journal Article
Publication:	Minerals and Metallurgical Processing
Publisher:	Society for Mining, Metallurgy & Exploration
Additional Information:	Copyright of this article belongs to Society for Mining, Metallurgy & Exploration.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Dec 2011 09:32
Last Modified:	09 Dec 2011 09:32
URI:	http://eprints.iisc.ac.in/id/eprint/42676

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