EP 2081685 A4 20101215 - METHOD OF EXTRACTING PLATINUM GROUP METALS FROM WASTE CATALISTS THROUGH ELECTROCHEMICAL PROCESS
Title (en)
METHOD OF EXTRACTING PLATINUM GROUP METALS FROM WASTE CATALISTS THROUGH ELECTROCHEMICAL PROCESS
Title (de)
VERFAHREN ZUM EXTRAHIEREN VON PLATINGRUPPENMETALLEN AUS KATALYSATORABFÄLLEN DURCH EINEN ELEKTROCHEMISCHEN PROZESS
Title (fr)
PROCEDE D'EXTRACTION DE METAUX DU GROUPE PLATINE A PARTIR DE CATALYSEURS USES, PAR PROCESSUS ELECTROCHIMIQUE
Publication
Application
Priority
- KR 2007004828 W 20071002
- KR 20060111811 A 20061113
Abstract (en)
[origin: WO2008060038A1] A method of extracting platinum group metals from waste catalysts through an electrochemical process is disclosed. The extracting method includes positioning the waste catalysts between both electrodes in an electrolytic cell, leaching the platinum group metals as regularly changing polarities of the electrodes to each other, and precipitating the platinum group metals on a cathode by circulating the electrolyte from an anode to a cathode. According to the method, the platinum group metals can be extracted with high efficiency and high yield. Also, the extracting process is simplified to remarkably reduce costs required to extract the platinum group metals.
IPC 8 full level
B01J 38/68 (2006.01); C22B 7/00 (2006.01); C22B 11/00 (2006.01); C25C 1/20 (2006.01)
CPC (source: EP KR US)
B01J 23/96 (2013.01 - KR); B01J 38/60 (2013.01 - KR); B01J 38/68 (2013.01 - KR); C22B 3/045 (2013.01 - EP US); C22B 11/048 (2013.01 - EP US); C22B 11/06 (2013.01 - EP US); C25C 1/20 (2013.01 - EP US); Y02P 10/20 (2015.11 - EP US)
Citation (search report)
- [Y] US 2003136685 A1 20030724 - STOLLER VIKTOR [DE], et al
- [Y] EP 1354968 A2 20031022 - STARCK H C GMBH [DE]
- [X] DATABASE WPI Week 200328, Derwent World Patents Index; AN 2003-287029, XP002608259
- [Y] DATABASE WPI Week 197709, Derwent World Patents Index; AN 1977-15952Y, XP002608260
- See references of WO 2008060038A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008060038 A1 20080522; AU 2007320303 A1 20080522; BR PI0716687 A2 20140311; CA 2762522 A1 20080522; CN 101534948 A 20090916; CN 101534948 B 20131016; EP 2081685 A1 20090729; EP 2081685 A4 20101215; IL 198707 A0 20100217; JP 2010509050 A 20100325; KR 100858551 B1 20080925; KR 20080043149 A 20080516; MX 2009005036 A 20090617; US 2010065436 A1 20100318
DOCDB simple family (application)
KR 2007004828 W 20071002; AU 2007320303 A 20071002; BR PI0716687 A 20071002; CA 2762522 A 20071002; CN 200780041968 A 20071002; EP 07808482 A 20071002; IL 19870709 A 20090512; JP 2009536148 A 20071002; KR 20060111811 A 20061113; MX 2009005036 A 20071002; US 31247307 A 20071002