Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1992-01-06
1993-10-19
Langel, Wayne
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75735, 75737, 75741, 423 29, 423 30, 423 31, 423379, C22B 1108, C01C 308
Patent
active
052541533
ABSTRACT:
A process for recycling hydrogen cyanide from a cyanide-containing slurry is provided. The process includes the steps of adjusting the pH of a cyanide-containing slurry, volatilizing HCN contained in the pH adjusted slurry and contacting the volatilized HCN with a precious metals-containing slurry to recover precious metals therefrom. Alternatively, the HCN can be contacted with reclaim, or decant, water to recover cyanide, thereby conserving resources.
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Cyprus Minerals Company
Langel Wayne
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