ELUTION OF GOLD/SILVER ADSORBED ON ACTIVATED CARBON USING A CYANIDE AND/OR BASE-CONTAINING ELUENT TO WHICH A REDUCING AGENT HAS BEEN ADDED

摘要

PCT No. PCT/EP94/03091 Sec. 371 Date Jun. 12, 1996 Sec. 102(e) Date Jun. 12, 1996 PCT Filed Sep. 15, 1994 PCT Pub. No. WO95/08651 PCT Pub. Date Mar. 30, 1995A powerful reducing agent such as hydrazine monohydrate is added to the standard eluent solutions such as NsOH-NaCN with or without alcohol. The kinetics of elution of gold or of silver are thus markedly enhanced.