EP 3555327 A1 20191023 - PROCESSING OF INDUSTRIAL METAL-CONTAINING WASTE MATERIALS
Title (en)
PROCESSING OF INDUSTRIAL METAL-CONTAINING WASTE MATERIALS
Title (de)
VERARBEITUNG VON INDUSTRIELLEN METALLHALTIGEN ABFALLSTOFFEN
Title (fr)
TRAITEMENT DE DÉCHETS INDUSTRIELS CONTENANT DES MÉTAUX
Publication
Application
Priority
- FI 20165972 A 20161215
- FI 2017050901 W 20171215
Abstract (en)
[origin: WO2018109283A1] The present invention relates to a process for separating metals using a series of precipitations from waste materials of the zinc or steel industry, or both. The method is characterized in carrying out the precipitations using hydroxides or sulfur-containing chemicals selected from sulfates, sulfides, sulfur oxides and sulfites, or both, in order to obtain metal precipitates as well as an aqueous sulfur-containing solution, the latter optionally being recycled in the process, where after a final precipitate is carried to a thermal step, for forming
IPC 8 full level
C22B 7/02 (2006.01); C22B 7/00 (2006.01); C22B 19/30 (2006.01)
CPC (source: EP FI)
C22B 7/007 (2013.01 - EP FI); C22B 7/02 (2013.01 - EP FI); C22B 11/044 (2013.01 - FI); C22B 19/30 (2013.01 - EP FI); Y02P 10/20 (2015.11 - EP)
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
DOCDB simple family (publication)
WO 2018109283 A1 20180621; EP 3555327 A1 20191023; EP 3555327 A4 20200812; FI 128281 B 20200228; FI 20165972 L 20180616
DOCDB simple family (application)
FI 2017050901 W 20171215; EP 17880716 A 20171215; FI 20165972 A 20161215