Title:
METHOD OF TREATING INTRACTABLE GOLD- AND SILVER-CONTAINING MATERIALS, ORES AND CONCENTRATES
Document Type and Number:
WIPO Patent Application WO/1996/034121
Kind Code:
A1
Abstract:
The invention is a method of treating intractable gold- and silver-containing materials, ores and concentrates without the use of cyanide and based on hydrometallurgical processing of the crushed material using mineral acids, thereby producing gold and silver solutions from which the gold and silver can be precipitated out using known procedures. The starting material is subjected to hydrometallurgical treatment, manganese oxides being introduced into or kept in said starting material at an overall concentration of 3-6 % calculated for manganese dioxide (pyrolusite). The hydrometallurgical treatment is effected using an aqueous solution of a mineral acid in the presence of a complexing agent in a concentration of 70-150 g/dm3.
Inventors:
MERETUKOV MARAT AKHMEDOVICH (RU)
MEIEROVICH ALEXANDR SOLOMONOVI (RU)
KARABACH SERGEI ANATOLIEVICH (RU)
MEIEROVICH ALEXANDR SOLOMONOVI (RU)
KARABACH SERGEI ANATOLIEVICH (RU)
Application Number:
PCT/RU1995/000080
Publication Date:
October 31, 1996
Filing Date:
April 28, 1995
Export Citation:
Assignee:
MERETUKOV MARAT AKHMEDOVICH (RU)
MEIEROVICH ALEXANDR SOLOMONOVI (RU)
KARABACH SERGEI ANATOLIEVICH (RU)
MEIEROVICH ALEXANDR SOLOMONOVI (RU)
KARABACH SERGEI ANATOLIEVICH (RU)
International Classes:
C22B3/06; C22B11/00; (IPC1-7): C22B11/00; C22B3/06
Foreign References:
| US5232490A | 1993-08-03 | |||
| US4740243A | 1988-04-26 | |||
| US4765827A | 1988-08-23 |
Other References:
G.G. MINEEV et al., "Rastvoriteli Zolota i Serebra v Gidrometallurgii", 1994, "Metallurgia", (Moscow), pages 36-40.
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