C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
53/234, 252/28
C01B 31/08 (2006.01) C01G 7/00 (2006.01) C22B 11/08 (2006.01)
Patent
CA 2012007
ABSTRACT OF THE DISCLOSURE There is disclosed an activated carbon for use in the process of recovery of gold which comprises adsorbing aurocyanide complexes thereon, desorbing the complexes therefrom and separating the activated carbon with a screen, the activated carbon being spherical and having a diameter of more than the opening of the screen but of not more than 2 mm; an iodine number of not less than 950 mg/g as determined by JIS K 1474-1975; and a hardness of not less than 99 % as determined by JIS K 1474-1975. Also disclosed is an improved, high efficient process of the recovery of gold which uses such a spherical activated carbon.
Fukui Teruo
Matsumoto Zenji
Suzuki Masayuki
Fetherstonhaugh & Co.
Takeda Chemical Industries Ltd.
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