Global Patent Index - EP 3172348 A1

EP 3172348 A1 20170531 - RECOVERY OF ZINC AND MANGANESE FROM PYROMETALLURGY SLUDGE OR RESIDUES

Title (en)

RECOVERY OF ZINC AND MANGANESE FROM PYROMETALLURGY SLUDGE OR RESIDUES

Title (de)

RÜCKGEWINNUNG VON ZINK UND MANGAN AUS PYROMETALLURGISCHEM SCHLAMM ODER RÜCKSTÄNDEN

Title (fr)

RÉCUPÉRATION DE ZINC ET DE MANGANÈSE À PARTIR DE RÉSIDUS OU DE BOUES DE PYROMÉTALLURGIE

Publication

EP 3172348 A1 20170531 (EN)

Application

EP 15809510 A 20150612

Priority

  • CA 2854778 A 20140618
  • CA 2015050547 W 20150612

Abstract (en)

[origin: CA2854778A1] Hydrometallurgical techniques for the selective recovery of Zn, Mn and Pb in that order from sludges or various metallurgical residues can include leaching steps to extract the zinc and manganese; the steps of removing iron, aluminum and silica from the leaching solutions; and recovering manganese and zinc by precipitation. Mn can be precipitated from an initial leaching solution as well as a secondary leaching solution obtained by leaching the slurry of the initial leaching step. Various other waste streams can also be treated.

IPC 8 full level

C22B 3/08 (2006.01); C22B 3/46 (2006.01); C22B 7/00 (2006.01); C22B 7/02 (2006.01); C22B 13/08 (2006.01); C22B 19/00 (2006.01); C22B 47/00 (2006.01)

CPC (source: EP)

C22B 3/46 (2013.01); C22B 7/006 (2013.01); C22B 7/007 (2013.01); C22B 13/045 (2013.01); C22B 19/30 (2013.01); C22B 47/00 (2013.01); Y02P 10/20 (2015.11)

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)

CA 2854778 A1 20151218; EP 3172348 A1 20170531; EP 3172348 A4 20180523; WO 2015192234 A1 20151223

DOCDB simple family (application)

CA 2854778 A 20140618; CA 2015050547 W 20150612; EP 15809510 A 20150612