EP 1784516 A1 20070516 - METHOD FOR NICKEL AND COBALT RECOVERY FROM LATERITE ORES BY REACTION WITH CONCENTRATED ACID WATER LEACHING
Title (en)
METHOD FOR NICKEL AND COBALT RECOVERY FROM LATERITE ORES BY REACTION WITH CONCENTRATED ACID WATER LEACHING
Title (de)
VERFAHREN ZUR GEWINNUNG VON NICKEL UND COBALT AUS LATERITERZEN DURCH UMSETZUNG MIT KONZENTRIERTER SÄURE UND WASSERAUSLAUGUNG
Title (fr)
METHODE DE RECUPERATION DE NICKEL ET DE COBALT A PARTIR DE MINERAIS DE LATERITE
Publication
Application
Priority
- CA 2005001003 W 20050627
- US 58324304 P 20040628
Abstract (en)
[origin: US2006002835A1] A process for leaching laterite ores containing limonite and saprolite in a two stage process. The first stage consisting of mixing and reacting the ore with concentrated mineral acid, and the second stage consisting of preparing a slurry of the acid/ore mixture in water and leaching the mixture to dissolve nickel and cobalt. Iron is efficiently separated from nickel and cobalt in the solid leach residue primarily as an oxide or hydroxide of ferric iron other than jarosite.
IPC 8 full level
C22B 23/00 (2006.01); C22B 3/06 (2006.01); C22B 3/44 (2006.01)
CPC (source: EP KR US)
C22B 23/00 (2013.01 - KR); C22B 23/043 (2013.01 - EP US); C22B 23/0461 (2013.01 - EP US); Y02P 10/20 (2015.11 - EP US)
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 MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2006002835 A1 20060105; AU 2005256213 A1 20060105; BR PI0512430 A 20080304; CA 2571492 A1 20060105; CN 100410399 C 20080813; CN 101006190 A 20070725; DO P2005000119 A 20051230; EP 1784516 A1 20070516; EP 1784516 A4 20080709; GT 200500177 A 20060316; JP 2008504439 A 20080214; KR 20070053211 A 20070523; TW 200606107 A 20060216; WO 2006000098 A1 20060105; ZA 200700592 B 20080528
DOCDB simple family (application)
US 16612505 A 20050627; AU 2005256213 A 20050627; BR PI0512430 A 20050627; CA 2005001003 W 20050627; CA 2571492 A 20050627; CN 200580028497 A 20050627; DO 2005000119 A 20050628; EP 05759184 A 20050627; GT 200500177 A 20050628; JP 2007518426 A 20050627; KR 20077002266 A 20070129; TW 94121431 A 20050627; ZA 200700592 A 20070122