EP 4192987 A1 20230614 - METHOD AND DEVICE FOR EXTRACTING GOLD AND/OR SILVER AND/OR AT LEAST ONE PLATINUM METAL
Title (en)
METHOD AND DEVICE FOR EXTRACTING GOLD AND/OR SILVER AND/OR AT LEAST ONE PLATINUM METAL
Title (de)
VERFAHREN UND VORRICHTUNG ZUR GEWINNUNG VON GOLD UND/ODER SILBER UND/ODER MINDESTENS EINEM PLATINMETALL
Title (fr)
PROCÉDÉ ET DISPOSITIF D'EXTRACTION D'OR ET/OU D'ARGENT ET/OU D'AU MOINS UN MÉTAL DU PLATINE
Publication
Application
Priority
- DE 102020209887 A 20200805
- EP 2021070424 W 20210721
Abstract (en)
[origin: WO2022028900A1] The invention relates to a method for extracting gold and/or silver and/or at least one platinum metal from at least one starting material. The starting material is treated in a solution which contains at least one nitrile using at least one oxidizing agent. An introduction (51) of the oxidizing agent into the solution is controlled or regulated on the basis of at least one concentration (cAu(t), cAu(t-1), cAu(t-2)) of a metal to be extracted or the complex thereof and/or on the basis of at least one concentration of cyanide ions and/or on the basis of at least one concentration of ammonia and ammonium ions in the solution. A device for extracting gold and/or silver and/or at least one platinum metal from the at least one starting material has a container which is designed to receive the starting material and a solution, multiple inlets and at least one UV/Vis spectrometer.
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 2022028900A1
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 102020209887 A1 20220210; CN 116157542 A 20230523; EP 4192987 A1 20230614; WO 2022028900 A1 20220210
DOCDB simple family (application)
DE 102020209887 A 20200805; CN 202180057919 A 20210721; EP 2021070424 W 20210721; EP 21754728 A 20210721