Desorption of gold from activated carbon

C - Chemistry – Metallurgy – 22 – B

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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-

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