EP 1929056 A4 20090415 - PROCESS FOR LEACHING LATERITIC ORE AT ATMOSPHERIC PRESSURE
Title (en)
PROCESS FOR LEACHING LATERITIC ORE AT ATMOSPHERIC PRESSURE
Title (de)
VERFAHREN ZUM AUSLAUGEN VON LATERITISCHEM ERZ BEI NORMALDRUCK
Title (fr)
PROCEDE DE LIXIVIATION DE MINERAI LATERITIQUE A LA PRESSION ATMOSPHERIQUE
Publication
Application
Priority
AU 2005001497 W 20050930
Abstract (en)
[origin: WO2007035978A1] An atmospheric leaching process in the recovery of nickel and cobalt from a lateritic ore, said lateritic ore including a low magnesium ore fraction and a high magnesium ore fraction, said process including the steps of: (a) forming an aqueous pulp of said lateritic ore, (b) leaching said aqueous pulp with a concentrated mineral acid at atmospheric pressure to produce a slurry containing a pregnant leach liquor and a leach residue, (c) treating the pregnant leach liquor either separately or as part of said slurry to recover dissolved nickel and cobalt therefrom, leaving a magnesium containing barren solution, (d) treating said magnesium containing solution to recover a magnesium containing salt therefrom.
IPC 8 full level
C22B 3/06 (2006.01); C22B 3/08 (2006.01); C22B 23/00 (2006.01); C22B 26/22 (2006.01)
CPC (source: EP US)
C22B 23/043 (2013.01 - EP US); C22B 23/0461 (2013.01 - EP US); C22B 26/22 (2013.01 - EP US); Y02P 10/20 (2015.11 - EP US)
Citation (search report)
- [Y] US 4298379 A 19811103 - ZAMBRANO ADOLFO R
- [Y] FR 2448577 A1 19800905 - STAUFFER CHEMICAL CO [CH]
- [Y] US 5571308 A 19961105 - DUYVESTEYN WILLEM P C [US], et al
- [Y] US 4548794 A 19851022 - LOWENHAUPT E HARRIS [US], et al
- [Y] US 4410498 A 19831018 - HATCH WILLIAM R [CA], et al
- See references of WO 2007035978A1
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
Designated extension state (EPC)
AL BA MK
DOCDB simple family (publication)
WO 2007035978 A1 20070405; AU 2005336880 A1 20070405; EA 200800997 A1 20080829; EC SP088357 A 20080630; EP 1929056 A1 20080611; EP 1929056 A4 20090415; JP 2009510258 A 20090312; US 2008271571 A1 20081106
DOCDB simple family (application)
AU 2005001497 W 20050930; AU 2005336880 A 20050930; EA 200800997 A 20050930; EC SP088357 A 20080409; EP 05789466 A 20050930; JP 2008532537 A 20050930; US 5487708 A 20080325