METHOD OF ELUTING PRECIOUS METALS ADSORBED ON ACTIVATED CARBON

摘要

FIELD: precious metal technology. SUBSTANCE: high-efficiency reducing agent such as hydrazine monohydrate is added to standard eluent solution such as NaOH-NaCN with or without alcohol and resultant solution is used to eluate gold or silver adsorbed on activated carbon. Amount of reducing agent is chosen such as to achieve specified level of reducing efficiency of eluent. EFFECT: markedly accelerated elution process. 28 cl, 9 dwg, 3 tbl