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Title:
HYDROMETALLURGICAL PROCESS FOR RECOVERY OF METALS AND/OR SEMIMETALS FROM WASTE MATERIALS CONTAINING COMPOUND SEMICONDUCTOR MATERIALS AND/OR BACK CONTACT MATERIALS AND/OR TRANSPARENT ELECTRICALLY CONDUCTING OXIDES (TCOS)
Document Type and Number:
WIPO Patent Application WO/2014/131401
Kind Code:
A3
Abstract:
The present invention relates to a hydrometallurgical process for recovery of metals and/or semimetals from waste materials, such as high-tech or green-tech wastes, and/or electrical and electronic waste containing compound semiconductor materials and/or back contact materials and/or transparent electrically conducting oxides (TCOs), wherein the waste materials according to the invention are mixed thoroughly with a reaction solution of water, 1 to 5% by mass sodium bisulphate and 1-5% by mass sodium chlorite or with a reaction solution of water, 1 to 50% by mass organosulphonic acid and in the stoichiometric ratio to the organosulphonic acid 1-5% by mass of an oxidizing agent, and the metals and/or semimetals that are to be recovered are dissolved.

Inventors:
PALITZSCH WOLFRAM (DE)
Application Number:
PCT/DE2014/100066
Publication Date:
October 23, 2014
Filing Date:
February 25, 2014
Export Citation:
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Assignee:
LOSER ULRICH (DE)
PALITZSCH WOLFRAM (DE)
International Classes:
C22B15/00; C22B3/16; C23F1/00
Domestic Patent References:
WO2014076544A12014-05-22
WO2008102240A12008-08-28
Foreign References:
US5755950A1998-05-26
US5017267A1991-05-21
US5505872A1996-04-09
RU2012120959A2013-11-27
US4957653A1990-09-18
US20120045898A12012-02-23
US4650553A1987-03-17
EP1050604A12000-11-08
Other References:
ZHENGHUI WU ET AL: "The kinetics of leaching galena concentrates with ferric methanesulfonate solution", HYDROMETALLURGY, vol. 142, 11 December 2013 (2013-12-11), pages 121 - 130, XP055135063, ISSN: 0304-386X, DOI: 10.1016/j.hydromet.2013.10.017
Attorney, Agent or Firm:
RUMRICH / PATENTANWALTSKANZLEI (GabrieleLimbacher Str. 305, Chemnitz, DE)
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