EP 1984528 A1 20081029 - IMPROVED BASE METAL RECOVERY PROCESS FROM HEAP LEACHING
Title (en)
IMPROVED BASE METAL RECOVERY PROCESS FROM HEAP LEACHING
Title (de)
VERBESSERTES VERFAHREN ZUR GEWINNUNG VON NICHTEDELMETALLEN AUS DER HALDENAUSLAUGUNG
Title (fr)
PROCEDE AMELIORE DE RECUPERATION D'UN METAL DE BASE A PARTIR D'UNE LIXIVIATION EN TAS
Publication
Application
Priority
- AU 2007000087 W 20070131
- AU 2006900441 A 20060131
- AU 2006901075 A 20060303
Abstract (en)
[origin: WO2007087675A1] A process for the recovery of base metals from an oxide ore, comprising the steps of: e) forming at least one heap (40) of the oxide ore containing the base metals to be recovered; f) irrigating the at least one heap (40) of oxide ore with a leach solution (42) comprising sulphuric acid; g) collecting resulting pregnant leach solution (44,50) from the irrigated heap (40); and treating the pregnant leach solution (44,50) with a reducing gas stream to create a treated pregnant leach solution for recovery of required base metals. The process is applicable to treatment of laterite ores and the conversion of ferric ions to ferrous ions, with regeneration of sulphuric acid in the process, has benefits in terms of enhanced process efficiency and reduced operating costs.
IPC 8 full level
CPC (source: EP)
C22B 3/08 (2013.01); C22B 23/043 (2013.01); C22B 23/0461 (2013.01); Y02P 10/20 (2015.11)
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 2007087675 A1 20070809; AU 2007211831 A1 20070809; AU 2007211831 B2 20110915; BR PI0707373 A2 20110503; CA 2640122 A1 20070809; EP 1984528 A1 20081029; EP 1984528 A4 20101103
DOCDB simple family (application)
AU 2007000087 W 20070131; AU 2007211831 A 20070131; BR PI0707373 A 20070131; CA 2640122 A 20070131; EP 07701420 A 20070131