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1. (WO2018219464) INTEGRATED PROCESS FOR RECYCLING WASHING TOWER SLUDGE FOR RECOVERY OF IRON OXIDE AND CARBON

Pub. No.:    WO/2018/219464    International Application No.:    PCT/EP2017/063338
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Jun 02 01:59:59 CEST 2017
IPC: C22B 7/00
C22B 3/44
Applicants: THYSSENKRUPP STEEL EUROPE AG
THYSSENKRUPP AG
Inventors: FLOCK, Jörg
MITTELSTÄDT, Horst
PAPPERT, Eckhard
TEBECK, Andreas
Title: INTEGRATED PROCESS FOR RECYCLING WASHING TOWER SLUDGE FOR RECOVERY OF IRON OXIDE AND CARBON
Abstract:
The invention relates to a method for recovering iron and carbon components from washing tower sludges, wherein a washing tower sludge is mixed with an acid-containing solution and then a reaction is performed so that an acidic aqueous iron-rich phase and a carbon-rich phase are obtained. Both phases are then separated from one another. The acid-aqueous iron-rich phase is processed such that an iron component, in particular iron (III) oxide, is obtained.