EP 4263887 A1 20231025 - METHOD AND FACILITY FOR PROCESSING WASTE CONTAINING METAL COMPOUNDS
Title (en)
METHOD AND FACILITY FOR PROCESSING WASTE CONTAINING METAL COMPOUNDS
Title (de)
VERFAHREN UND ANLAGE ZUR VERARBEITUNG VON METALLVERBINDUNGEN ENTHALTENDEM ABFALL
Title (fr)
PROCÉDÉ ET INSTALLATION DE TRAITEMENT DE DÉCHETS CONTENANT DES COMPOSÉS MÉTALLIQUES
Publication
Application
Priority
- FR 2013829 A 20201221
- EP 2021086880 W 20211220
Abstract (en)
[origin: WO2022136316A1] This method for processing waste containing metal compounds, in particular waste electrical and electronic equipment, comprises the following steps: - providing a gaseous mixture (MG) comprising ammonium and hydrogen sulphide, and optionally other sulphurous gases, - producing from the gaseous mixture (MG), by bringing the gaseous mixture (MG) into contact with an aqueous solution, at least one leach solution (SL) comprising ammonium hydroxide NH4OH and ammonium hydrosulphide (NH4)2S and/or ammonium polysulphides, - leaching of at least one metal compound from the waste, comprising bringing the waste into contact with the leach solution (SL) in a chamber (45) so as to produce, through a reaction of the metal compound with the leach solution (SL), a leachate comprising a precipitated metal in the form of sulphides, and - extracting the leachate from the chamber (45).
IPC 8 full level
C22B 3/28 (2006.01); C02F 3/28 (2023.01); C02F 11/04 (2006.01); C12M 1/00 (2006.01); C22B 3/14 (2006.01); C22B 3/30 (2006.01); C22B 7/00 (2006.01); C22B 15/00 (2006.01); C25C 1/12 (2006.01)
CPC (source: EP)
C22B 3/14 (2013.01); C22B 3/288 (2021.05); C22B 3/30 (2021.05); C22B 7/008 (2013.01); C22B 15/0078 (2013.01); Y02P 10/20 (2015.11)
Citation (search report)
See references of WO 2022136316A1
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)
FR 3118062 A1 20220624; FR 3118062 B1 20230721; EP 4263887 A1 20231025; WO 2022136316 A1 20220630
DOCDB simple family (application)
FR 2013829 A 20201221; EP 2021086880 W 20211220; EP 21835336 A 20211220