Specialized metallurgical processes – compositions for use therei – Processes – Producing or purifying free metal powder or producing or...
Patent
1992-09-04
1995-02-28
Miller, Edward A.
Specialized metallurgical processes, compositions for use therei
Processes
Producing or purifying free metal powder or producing or...
75371, 75393, 75720, 423 2, C22B 1100
Patent
active
053933222
ABSTRACT:
A process for recovering palladium, rhodium and ruthenium from aqueous solutions deriving from the treatment of nuclear fuels and containing also iron and nickel, by reducing carbonylation with carbon monoxide at a pressure up to 1 atmosphere in a nitric acid solution at a pH of between 2 and 4 and at a temperature of between room and 100.degree. C. and reaction times of from 6 to 100 hours.
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C.E.S.E.C. Centro Europeo Studi Economici e Chimici Srl
Miller Edward A.
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