Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1977-01-14
1978-10-31
Konopka, P. E.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
75118P, 75121, 252416, 252420, C01G 500, C22B 1104, B01J 2396, B01J 2120
Patent
active
041235002
ABSTRACT:
This invention relates to the recovery of precious metals. More particularly, the invention relates to a process for the recovery of a catalytic metal from a carbonaceous residue or support comprising subjecting an aqueous slurry of material containing catalytic metal to be recovered to a temperature of not less than 200.degree. C and a pressure not less than 75 atmospheres in an atmosphere comprising a quantity of oxygen at least sufficient to oxidize substantially all the carbon present, the oxidation being carried out in the presence of a liquid aqueous phase. The process also relates to the recovery of silver from photographic film.
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Acres Gary J. K.
Bird Alfred J.
Johnson Matthey & Co., Limited
Konopka P. E.
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