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Ammoniacal leaching for extraction of non-ferrous metals from deep-sea nodules

Authors
Journal
International Journal of Mineral Processing
0301-7516
Publisher
Elsevier
Publication Date
Volume
15
Identifiers
DOI: 10.1016/0301-7516(85)90030-4

Abstract

Abstract The reduction and ammoniacal leaching of deep-sea manganese nodules was investigated. The reduction was performed by means of wood charcoal and natural gas respectively, in the temperature range of 750–1150 K. Ammoniacal leaching was performed by means of NH 3 + CO 2 solution. The highest extraction efficiency by wood charcoal reduction was more than 90% Ni, 70% Cu, 60% Mo, and 90% Co. For natural gas it was 60% Cu, 85% Mo, and 40% for Ni and Co.

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