发明名称 |
METHOD FOR BIOLEACHING AND SOLVENT EXTRACTION WITH SELECTIVE RECOVERY OF COPPER AND ZINC FROM POLYMETAL CONCENTRATES OF SULFIDES |
摘要 |
A bioleaching and solvent extraction process with selective recovery of copper and zinc from polymetallic sulphide concentrates is described, comprising a bioleaching and ferric ion reducing process and a copper and zinc solvent extraction process.;The bioleaching and ferric ion reducing process comprises a concentrates pulp conditioning step; a bioleaching step, wherein once the pulp is conditioned it is subjected to a bioleaching process using a plurality of bioreactors of the stirred-tank type with an air injection and diffusion system, which allows handling of a pulp density higher than 15%; a step of solid separation from a solution rich in metallic ions from the bioleaching step; and, a ferric ion reduction step, wherein the pulp from the previous step is subjected to a transformation step of ferric ions into ferrous ions.;The solvent extraction step comprises a copper solvent extraction and electrolysis step; an arsenic control step, wherein arsenic is controlled in the solution once copper has been extracted from it; and, a zinc solvent extraction and electrolysis step, which uses a phosphinic acid-based zinc extraction dissolution. |
申请公布号 |
US2016115564(A1) |
申请公布日期 |
2016.04.28 |
申请号 |
US201314787805 |
申请日期 |
2013.10.30 |
申请人 |
SERVICIOS CONDUMEX S.A. DE C.V. |
发明人 |
SANCHEZ- VAZQUEZ Belisario;ESTRADA -DE LOS SANTOS Francisco;LOPEZ-JUAREZ Alfonso;BUENDIA-CACHU Eric David;MONTER- VALENZUELA Ulises |
分类号 |
C22B3/18;C22B3/00;C22B3/08;C21B15/00;C22B3/44;C25C1/12;C22B3/12;C22B15/00;C22B3/22 |
主分类号 |
C22B3/18 |
代理机构 |
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代理人 |
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主权项 |
1. A bioleaching and solvent extraction process with selective recovery of copper and zinc from sulphide polymetallic concentrates, comprising a bioleaching and ferric ion reduction step, followed by a copper and zinc solvent extraction step, wherein the bioleaching and ferric ion reduction step includes the steps of: a) conditioning of a sulphide polymetallic concentrates pulp; b) bioleaching of the sulphide polymetallic concentrates pulp; c) solid separation of the pulp coming from the bioleaching step; and d) ferric ion transformation (reduction); while the copper and zinc solvent extraction step includes the steps of: a) copper solvent extraction and electrolysis; b) arsenic control; and, c) zinc solvent extraction and electrolysis. |
地址 |
Santiago de Querétaro, Querétaro MX |