Aqueous solutions containing metal cyanide for cyanide...

Details Aqueous solutions containing metal cyanide for cyanide... Aqueous solutions containing metal cyanide for cyanide...

2007-01-22

2011-10-18

Choi, Ling (Department: 1761)

Chemistry of inorganic compounds

Nitrogen or compound thereof

Carbon containing

C423S027000, C423S029000, C423S179000, C423S236000, C423S372000

Reexamination Certificate

active

08038974

ABSTRACT:
The present invention relates to solutions comprising water and at least one metal cyanide, at least a part of the water being obtained from wastewater which occurs as depleted wastewater in a process for extracting noble metals from noble metal-containing ores by the cyanide process, the process for the preparation of solutions according to the invention and to the use of the solutions according to the invention in a process for extracting noble metals from noble metal-containing ores by the cyanide process, to a process for extracting noble metals from noble metal-containing ores by the cyanide process, wherein the solution according to the invention is used, and to the use of depleted wastewater occurring in the extraction of noble metals from noble metal-containing ores by the cyanide process to the preparation of solutions comprising water and at least one metal cyanide.

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