Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR EXTRACTION OF GOLD AND SILVER FROM MINERAL RAW MATERIAL
Document Type and Number:
WIPO Patent Application WO/1992/018655
Kind Code:
A1
Abstract:
A method for extraction of gold and silver from a mineral raw material provides for sorption leaching of the pulped raw material in a cascade of installations and subsequent multi-stage desorption of gold, silver and admixtures from a saturated synthetic sorbent (resin) containing ion-exchange groups. Cyanic salts are charged into the installations discretely while maintaining in them an identical salt concentration required for a given raw material, and during desorption the fractions rich in gold and silver are extracted to be used for obtaining the finished product. The methods of sorption provide for separate desorption of gold, silver and admixtures. Before sorption leaching, a preliminary cyanidation is carried out, and in the case of presence in the raw material of natural sorbents the synthetic sorbent is fed into the pulp before charging the cyanic salts into it.

Inventors:
LASKORIN BORIS NIKOLAEVICH (SU)
GASTEVA NATALJA JURIEVNA (SU)
DOBROSKOKIN VIKTOR VASILIEVICH (SU)
KONNENKOVA TATIANA IVANOVNA (SU)
VOLKOV VLADIMIR PETROVICH (SU)
Application Number:
PCT/SU1991/000224
Publication Date:
October 29, 1992
Filing Date:
November 06, 1991
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
VNII KHIM (SU)
International Classes:
C22B11/08; (IPC1-7): C22B11/00; C22B11/08
Foreign References:
FR2574092A11986-06-06
GB2156794A1985-10-16
US4929274A1990-05-29
Other References:
GIDROMETALLURGIA ZOLOTA, 1980, Nauka (Moscow), B.N. LASKORIN et al., "Sorbtsionnaya tekhnologia v gidrometallurgii zolota", pages 76-88.
"Sovremennoe sostoyanie i perspektivy primenenia sorbtsionnykh protsessov v gidrometallurgii zolota", 1974, TsNII INFORMATSII I TEKHNIKO-EKONOMICHESKIKH ISSLEDOVANY TSVETNOI METALLURGII, (Moscow), pages 7-17, 30-32.
TSVETNYE METALLY, No. 2, 1990, METALLURGIA (Moscow), pages 196-208.
OBOGASCHENIE RUD I PESKOV BLAGORODNYKH METALLOV, 1971, Nauka (Moscow), I.D. FRIDMAN, "Problemy ispolzovania ionoobmennykh smol v gidromettalrgii zoloza, pages 97-103.
Download PDF: