Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1978-02-27
1979-12-04
Ozaki, G.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75101R, 75106, 75107, 75118R, 204109, 204110, 423 28, 423 29, 423 32, C22B 1108
Patent
active
041770684
ABSTRACT:
A process for the extraction of gold and silver from their ores in which the ore is reduced to a particle size of 1 mm or less and mixed with a lixiviant, e.g., alkaline sodium or potassium cyanide, in an amount to provide a liquor content of about 8 to 12%, the lixiviant coated particles are allowed to react for a time sufficient for the lixiviant to extract the noble metal and the particles washed with water to obtain a solution of the noble metal salt from which the noble metal is recovered.
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Balakrishnan Ramachandran
Skinner Geoffrey F.
Foster Wheeler Energy Corporation
Herguth, Jr. John J.
Naigur Marvin A.
Ozaki G.
Wilson John E.
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