EP 2483458 A1 20120808 - ACIDIC DEZINCIFICATION
Title (en)
ACIDIC DEZINCIFICATION
Title (de)
SAURE ENTZINKUNG
Title (fr)
DÉZINGAGE À L'ACIDE
Publication
Application
Priority
EP 2009007017 W 20090930
Abstract (en)
[origin: WO2011038746A1] The invention relates to a method for dezincifying zinced steel scrap, wherein the zinced steel scrap is brought into contact with an acidic solution, which is already pre-loaded with zinc ions. It has been shown that a significant acceleration of the zinc dissolution can be effected in this way so that the reaction times can be kept sufficiently low to substantially prevent iron from also being dissolved, which would be undesirable. In particular, the method can be coupled with the primary zinc production in that a solution produced during the dissolution of zinc oxide obtained from zinc ore is used as the acidic solution.
IPC 8 full level
C22B 1/00 (2006.01); C22B 3/04 (2006.01); C22B 3/08 (2006.01); C22B 7/00 (2006.01); C22B 19/02 (2006.01); C22B 19/30 (2006.01); C22B 61/00 (2006.01); C23F 1/00 (2006.01); C25C 1/16 (2006.01); C25F 5/00 (2006.01); C25F 7/02 (2006.01)
CPC (source: EP)
C22B 1/005 (2013.01); C22B 3/08 (2013.01); C22B 7/007 (2013.01); C22B 19/22 (2013.01); C22B 19/30 (2013.01); C23F 1/00 (2013.01); C25C 1/16 (2013.01); Y02P 10/20 (2015.11)
Citation (search report)
See references of WO 2011038746A1
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2009007017 W 20090930; EP 09744048 A 20090930