EP 4192986 A1 20230614 - METHOD FOR EXTRACTING GOLD AND/OR SILVER AND/OR AT LEAST ONE PLATINUM METAL
Title (en)
METHOD FOR EXTRACTING GOLD AND/OR SILVER AND/OR AT LEAST ONE PLATINUM METAL
Title (de)
VERFAHREN ZUR GEWINNUNG VON GOLD UND/ODER SILBER UND/ODER MINDESTENS EINEM PLATINMETALL
Title (fr)
PROCÉDÉ D'EXTRACTION D'OR ET/OU D'ARGENT ET/OU D'AU MOINS UN MÉTAL DU PLATINE
Publication
Application
Priority
- DE 102020209882 A 20200805
- EP 2021070422 W 20210721
Abstract (en)
[origin: WO2022028898A1] The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal. At least one starting material, which contains gold and/or silver and/or at least one platinum metal, is introduced into an aqueous solution that contains at least one nitrile. Ozone is introduced into the solution in at least two introduction phases (51, 52, 53). No ozone is introduced into the solution between the introduction phases (51, 52, 53).
IPC 8 full level
C22B 1/00 (2006.01); C22B 3/06 (2006.01); C22B 3/16 (2006.01); C22B 3/26 (2006.01); C22B 11/00 (2006.01); C22B 11/08 (2006.01)
CPC (source: EP)
C22B 1/00 (2013.01); C22B 3/06 (2013.01); C22B 3/16 (2013.01); C22B 3/26 (2021.05); C22B 11/04 (2013.01); C22B 11/08 (2013.01); Y02P 10/20 (2015.11)
Citation (search report)
See references of WO 2022028898A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020209882 A1 20220210; CN 116057190 A 20230502; EP 4192986 A1 20230614; WO 2022028898 A1 20220210
DOCDB simple family (application)
DE 102020209882 A 20200805; CN 202180057957 A 20210721; EP 2021070422 W 20210721; EP 21754726 A 20210721