FIELD: precious metal metallurgy. SUBSTANCE: method of recycling hydrogen cyanide from cyanide-containing slime includes following steps: adjusting pH value of cyanide-containing slime, vaporizing hydrogen cyanide contained in the lime with preset pH, and bringing hydrogen cyanide in contact with slime containing precious metals to recover the latter. Hydrogen cyanide may also be brought in contact with recycle water or with decantation water to isolate cyanide and preserve resources. EFFECT: improved procedure. 14 cl
Title | Year | Author | Number |
---|---|---|---|
METHOD FOR RECOVERY OF METALS (ITS VERSIONS) AND DUMP | 1992 |
|
RU2065503C1 |
METHOD OF NEUTRALIZATION OF THE CYANIDE-CONTAINING AND THE THIOCYANATE-CONTAINING WASTE WATERS | 2006 |
|
RU2310614C1 |
HYDROMETALLURGICAL METHOD OF EXTRACTING PRECIOUS METALS FROM PERSISTENT SULFIDE ORE | 1993 |
|
RU2086682C1 |
METHOD OF NOBLE METALS EXTRACTION FROM ORES, ORE CONCENTRATES OR TAILING WASTES | 1990 |
|
RU2069235C1 |
METHOD FOR DEACTIVATING CYANO-CONTAINING SOLUTIONS AND PULPS | 2013 |
|
RU2550189C1 |
METHOD OF RENDERING HARMLESS AND REGENERATION OF CYANODES IN LEACHING OF METALS FROM ORES, CONCENTRATES AND TECHNOGENIC WASTES | 1998 |
|
RU2141538C1 |
METHOD FOR BIOOXIDATION OF REFRACTORY SULFIDE ORES | 1994 |
|
RU2113522C1 |
EXTRACTION METHOD OF GOLD FROM ORES AND PRODUCTS OF THEIR PROCESSING | 2012 |
|
RU2490344C1 |
PROCEDURE FOR EXTRACTION OF GOLD FROM REFRACTORY CLAY ORE | 2010 |
|
RU2431689C1 |
METHOD OF HYDROMETALLURGICAL RECOVERY | 1995 |
|
RU2124573C1 |
Authors
Dates
1998-01-27—Published
1993-01-04—Filed