Title:
PRECIPITATION OF ANTIMONY AND BISMUTH FROM COPPER REFINERY ELECTROLYTE USING PBO2
Document Type and Number:
WIPO Patent Application WO/2012/080988
Kind Code:
A3
Abstract:
The invention is suitable for use in metal and nonmetal mining and, in general, in any area of operation containing Sb and Bi in solution in an electrolyte based mainly on sulfuric acid. The system consists in contacting: solid lead dioxide (PbO2), which can be surface activated with an oxidising agent, e.g. hydrogen peroxide (H2O2), in order to enhance the reaction thereof, with an acid electrolyte containing Sb and Bi in solution, in order to reduce the soluble Sb and Bi content present in the liquid phase, forming insoluble compounds based on Pb-Sb and Pb-Bi. The invention can be used to reduce the presence of Sb and Bi in solution by at least 70%.
Inventors:
CIFUENTES GERARDO (CL)
SIMPSON JAIME (CL)
VARGAS CRISTIAN (CL)
SIMPSON JAIME (CL)
VARGAS CRISTIAN (CL)
Application Number:
PCT/IB2011/055741
Publication Date:
March 07, 2013
Filing Date:
December 16, 2011
Export Citation:
Assignee:
UNIV SANTIAGO CHILE (CL)
CIFUENTES GERARDO (CL)
SIMPSON JAIME (CL)
VARGAS CRISTIAN (CL)
CIFUENTES GERARDO (CL)
SIMPSON JAIME (CL)
VARGAS CRISTIAN (CL)
International Classes:
C22B3/44
Foreign References:
| CL45037A | ||||
| US5573739A | 1996-11-12 | |||
| US5935409A | 1999-08-10 |
Other References:
NAVARRO P ET AL: "Elimination of impurities from copper electrolytic solutions. Determination of the stability and precipitation conditions for systems containing arsenic, antimony and bismuth", REVISTA DE METALURGIA, CENTRO NACIONAL DE INVESTIGACIONES METALURGICAS, MADRID, ES, vol. 30, no. 4, 1 July 1994 (1994-07-01), pages 213 - 226, XP009164589, ISSN: 0034-8570
CIFUENTES G ET AL: "New process for the precipitation of Sb and Bi from copper electrolytes with PbO2", TMS ANNUAL MEETING ; T.T. CHEN HONORARY SYMPOSIUM ON HYDROMETALLURGY, ELECTROMETALLURGY AND MATERIALS CHARACTERIZATION,, 1 January 2012 (2012-01-01), pages 125 - 130, XP009164564
CIFUENTES G ET AL: "New process for the precipitation of Sb and Bi from copper electrolytes with PbO2", TMS ANNUAL MEETING ; T.T. CHEN HONORARY SYMPOSIUM ON HYDROMETALLURGY, ELECTROMETALLURGY AND MATERIALS CHARACTERIZATION,, 1 January 2012 (2012-01-01), pages 125 - 130, XP009164564
Attorney, Agent or Firm:
JOHANSSON & LANGLOIS et al. (P.O. Box 1834, Santiago 41, CL)
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