C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/220, 252/25
C22B 11/00 (2006.01) C01G 5/00 (2006.01) C01G 7/00 (2006.01) C22B 3/00 (2006.01) C22B 7/00 (2006.01) C22B 11/08 (2006.01)
Patent
CA 1102557
ABSTRACT OF THE DISCLOSURE Gold and/or silver are desorbed from activated carbon by contacting, at a temperature of about 80 to 160°C, with a solution comprising about 20 to 30 percent by volume of a water soluble alcohol and about 80 to 70 percent by volume of an aqueous solution of a strong base. -1-
272439
Heinen Harold J.
Lindstrom Roald E.
Peterson David G.
Parral Group
Smart & Biggar
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