METHOD OF ELUTING PRECIOUS METALS ADSORBED ON ACTIVATED CARBON Russian patent published in 1999 - IPC

Abstract RU 2131938 C1

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

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RU 2 131 938 C1

Authors

Kharvej Sara

Van L'Erde Andre

Lui P'Er Ehduard

Dates

1999-06-20Published

1994-09-15Filed