Physicochemical aspects of carbothermic reduction of cassiterite in the ionic melt

Conditions of the carbothermic reduction of the cassiterite concentrate in the melt of the Na 2 CO 3 -NaNO 3 salt system (weight ratio 1: 0.3) are investigated. The charge composition is established, and the temperature range of reduction (600–900°C) is determined. It is shown that the intermediate...

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Published in:Russian journal of non-ferrous metals 2009-12, Vol.50 (6), p.596-599
Main Authors: Komkov, V. G., Gostishchev, V. V., Ri, E. Kh
Format: Article
Language:English
Subjects:
Carbon monoxide
Carbothermic reactions
Cassiterite
Chemistry and Materials Science
Concentration (composition)
Materials Science
Melts
Metallic Materials
Metallurgy of Nonferrous Metals
Nonferrous metals
Reduction
Weight reduction
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creator Komkov, V. G.
Gostishchev, V. V.
Ri, E. Kh
description Conditions of the carbothermic reduction of the cassiterite concentrate in the melt of the Na 2 CO 3 -NaNO 3 salt system (weight ratio 1: 0.3) are investigated. The charge composition is established, and the temperature range of reduction (600–900°C) is determined. It is shown that the intermediate Na 2 SnO 3 compound is formed during the interaction of cassiterite with the melt. This compound is mainly reduced by gaseous CO in a liquid phase of the melt with a high rate (1.5 h), thereby providing the recovery of 97% Sn from the cassiterite concentrate into the crude alloy.
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subjects Carbon monoxide
Carbothermic reactions
Cassiterite
Chemistry and Materials Science
Concentration (composition)
Materials Science
Melts
Metallic Materials
Metallurgy of Nonferrous Metals
Nonferrous metals
Reduction
Weight reduction
title Physicochemical aspects of carbothermic reduction of cassiterite in the ionic melt
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