Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1976-03-22
1976-10-12
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75 82, 75103, C22B 2304
Patent
active
039855562
ABSTRACT:
Lateritic nickel ores which also contain magnesia are subjected to a low temperature reduction using carbon monoxide as the sole reductant and are then subjected to a higher temperature heat treatment in an inert atmosphere for a time sufficient to stabilize the nickel in a readily extractable state. The reduction is accomplished at a temperature in the range of 300 to 450.degree.C and the heat treatment is carried out at a temperature above about 650.degree.C.
REFERENCES:
patent: 3929468 (1975-12-01), Siemens et al.
Good Philip C.
Siemens Richard E.
Andrews M. J.
Fraser Donald R.
Shubert Roland H.
The United States of America as represented by the Secretary of
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