Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1985-09-11
1987-04-07
Doll, John
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75114, 75117, 75118R, 75119, 75120, 75121, 75 2, 423 27, 423 35, 423 38, 423 39, 423 98, 423104, 423109, 423 87, 423 40, 423 46, 423150, 423602, C22B 300
Patent
active
046558292
ABSTRACT:
Metal values are separated from arsenic sulfide ores in a hydrometallurgical oxidation process using a balanced reactant slurry. The molar concentration of As and Sb in the reactant slurry is controlled with respect to the molar concentration of Cu, Pb, and Zn in the slurry so that, upon reacting, soluble arsenic compounds or toxic arsenic vapors are not formed.
REFERENCES:
patent: 1011562 (1911-12-01), Bradley
patent: 3981962 (1976-09-01), Smyres et al.
patent: 4053305 (1977-10-01), Smyres et al.
patent: 4113471 (1978-09-01), Langhorst et al.
patent: 4410496 (1983-10-01), Smyres et al.
Smyres and Hill, Treatment of Complex Sulfide Concentrates by the Chloride-Oxygen Approach, 1980 Pacific Northwest Metals & Minerals Conference.
CSS Management Corp.
Doll John
Hammar John C.
Stoll Robert L.
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