Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1990-03-06
1992-10-27
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
423 22, 521 31, 521 32, C01G 5500
Patent
active
051586037
ABSTRACT:
An improved extraction system employing a quaternary amine to extract anions from an aqueous solution, particularly precious metals such as gold or silver from an aqueous alkaline solution. The improvement comprises the use of a weak organic acid (a compound providing an acidic proton) along with the quaternary amine. The improvement is useful in both liquid-liquid and liquid-solid extraction systems.
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Kordosky Gary A.
Stierman Thomas J.
Virnig Michael J.
Henkel Research Corporation
Jaeschke Wayne C.
Rosenberg Peter D.
Span Patrick J.
Szoke Ernest G.
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