EP 1794334 A1 20070613 - PREPARATION OF ZINC CHEMICALS FROM THE MINOR FLOW OF A PROCESS
Title (en)
PREPARATION OF ZINC CHEMICALS FROM THE MINOR FLOW OF A PROCESS
Title (de)
HERSTELLUNG VON ZINKCHEMIKALIEN AUS DEM NEBENSTROM EINES VERFAHRENS
Title (fr)
PREPARATION DE PRODUITS CHIMIQUES A BASE DE ZINC A PARTIR DU FLUX SECONDAIRE D'UN PROCESSUS
Publication
Application
Priority
- FI 2005000380 W 20050906
- FI 20041163 A 20040908
Abstract (en)
[origin: WO2006027412A1] The invention is a novel process arrangement for producing pure zinc chemicals from the minor flow of a calcining-dissolving-electrolysis type of a preparation process of zinc. The invention is based on the fact that part of the production of the zinc sulphate-containing solution obtained from the dissolution of the calcining-dissolving-electrolysis plant is directed to the preparation of zinc chemicals. The actual recovery process of zinc, which is based on electrolysis, is not disturbed, as only part of the production of the zinc sulphate solution is directed to the preparation of zinc chemicals. The extraction process is based on the use of any organically substituted phosphoric acid or organically substituted thiophosphinic acid. The strong acid solution, which is generated as a by-product in the extraction process of zinc, is recycled back to the calcining-dissolving-electrolysis type of a preparation process of zinc.
IPC 8 full level
C22B 3/00 (2006.01); C22B 3/08 (2006.01); C22B 3/38 (2006.01); C22B 19/20 (2006.01); C25C 1/16 (2006.01)
IPC 8 main group level
C22B (2006.01)
CPC (source: EP US)
C22B 3/08 (2013.01 - EP US); C22B 3/3846 (2021.05 - EP US); C22B 3/385 (2021.05 - EP US); C22B 19/22 (2013.01 - EP US); C22B 19/26 (2013.01 - EP US); Y02P 10/20 (2015.11 - EP US)
Citation (search report)
See references of WO 2006027412A1
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 NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006027412 A1 20060316; AU 2005281684 A1 20060316; CA 2577863 A1 20060316; CN 100406593 C 20080730; CN 101014723 A 20070808; EA 010853 B1 20081230; EA 200700420 A1 20071026; EP 1794334 A1 20070613; FI 117139 B 20060630; FI 20041163 A0 20040908; FI 20041163 A 20060309; JP 2008512569 A 20080424; MX 2007002750 A 20070518; PE 20060757 A1 20060914; US 2007253878 A1 20071101
DOCDB simple family (application)
FI 2005000380 W 20050906; AU 2005281684 A 20050906; CA 2577863 A 20050906; CN 200580030229 A 20050906; EA 200700420 A 20050906; EP 05779682 A 20050906; FI 20041163 A 20040908; JP 2007530727 A 20050906; MX 2007002750 A 20050906; PE 2005001018 A 20050905; US 66206105 A 20050906