Prospects for involvement of low-grade molybdenum and tungsten concentrates in metallurgical processing

The expediency of involving low-grade concentrates and middlings in metallurgical processing is substantiated. The possibility of efficient processing of low-grade molybdenite (15–20% Mo) and scheelite (7–10% WO 3 ) concentrates by hydrometallurgical and combined methods (with a preliminary roasting...

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Bibliographic Details
Published in:Metallurgist (New York) 2013-07, Vol.57 (3-4), p.261-267
Main Authors: Medvedev, A. S., Aleksandrov, P. V., Razykov, B. Z., Rodionov, A. O., Sannikova, O. V.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Concentrates
Concentrates (ores)
Ferroalloys
Materials Science
Metallic Materials
Metallurgy
Molybdenum
Molybdenum compounds
Natural resources
Roasting
Scheelite
Sintering
Technology application
Tungsten
Tungsten oxides
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Summary:The expediency of involving low-grade concentrates and middlings in metallurgical processing is substantiated. The possibility of efficient processing of low-grade molybdenite (15–20% Mo) and scheelite (7–10% WO 3 ) concentrates by hydrometallurgical and combined methods (with a preliminary roasting of scheelite concentrate) is shown. Technologies aimed at preparing synthetic scheelite and powellite suitable for smelting ferrotungsten and ferromolybdenum are developed. Extraction of metals from ores into end products is greater by 15–20% than traditional treatment methods: flotation with preparation of conditioned concentrates and subsequent processing. This provides more rational use of natural resources.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-013-9722-0