Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1980-12-15
1982-06-15
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75 24, C22C 3300
Patent
active
043349250
ABSTRACT:
Molten molybdenum-copper-iron-sulfur mattes or alloys, obtained, for example, by reacting slags or other copper-molybdenum containing oxide residues or waste materials witn an iron and/or sulfide reductant, are enriched in molybdenum and copper by a pyrometallurgical process. The molten matte or alloy material is first carburized whereupon a copper-rich matte phase separates from the alloy phase and is removed. The molten alloy phase is next treated one or more times by the addition of sulfur or pyrite resulting in the formation of additional copper-rich matte as a separate phase which is separated after each treatment, leaving an alloy of molybdenum and iron of reduced Cu content. Finally the alloy is desulfurized to provide a commercial product.
REFERENCES:
patent: 2135630 (1938-11-01), Sullivan et al.
patent: 3857699 (1974-12-01), Ammann et al.
patent: 3857700 (1974-12-01), Ammann et al.
patent: 4001011 (1977-01-01), Agarwal et al.
Elliott John F.
Kim Jonathan J.
Andrews M. J.
Kennecott Corporation
Lorusso Anthony M.
Sniado John L.
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