EP 3369499 A1 20180905 - METHOD FOR PRODUCING SEED CRYSTAL OF COBALT POWDER
Title (en)
METHOD FOR PRODUCING SEED CRYSTAL OF COBALT POWDER
Title (de)
VERFAHREN ZUM HERSTELLEN EINES IMPFKRISTALLS AUS KOBALTPULVER
Title (fr)
PROCÉDÉ DE PRODUCTION DE CRISTAL DE GERME DE COBALT
Publication
Application
Priority
- JP 2015210258 A 20151026
- JP 2016080690 W 20161017
Abstract (en)
Provided is a production method for obtaining cobalt powder efficiently by the way for increasing reduction reaction efficiency to produce the cobalt powder from a solution containing a cobalt ammine sulfate complex. The method for producing seed crystals of cobalt powder, sequentially including: a complexing step of adding ammonia, an ammonia compound solution, or both of ammonia and an ammonia compound solution to a cobalt sulfate solution to obtain a solution containing a cobalt ammine sulfate complex; a mixing step of adding a solid to the solution containing the cobalt ammine sulfate complex obtained in the complexing step to form a mixture slurry; a reduction and precipitation step of charging a reaction vessel with the mixture slurry obtained in the mixing step, blowing hydrogen gas into the reaction vessel and reducing cobalt contained in the mixture slurry to obtain a cobalt powder slurry containing cobalt precipitate with a cobalt component precipitated on the surface of the solid as cobalt powder; and a solid-liquid separation step of performing solid-liquid separation on the cobalt powder slurry obtained in the reduction and precipitation step to obtain cobalt precipitate and a solution after reduction.
IPC 8 full level
B22F 9/26 (2006.01)
CPC (source: EP US)
B22F 9/26 (2013.01 - EP US); B22F 2301/15 (2013.01 - US); B22F 2304/10 (2013.01 - US); B22F 2999/00 (2013.01 - EP US); C22C 1/0433 (2013.01 - EP US)
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)
EP 3369499 A1 20180905; EP 3369499 A4 20190320; AU 2016345951 A1 20180517; AU 2016345951 B2 20190117; CA 3003239 A1 20170504; CA 3003239 C 20191126; CN 108349011 A 20180731; JP 2017082270 A 20170518; JP 6350830 B2 20180704; PH 12018500896 A1 20181029; PH 12018500896 B1 20181029; US 2019061006 A1 20190228; WO 2017073392 A1 20170504
DOCDB simple family (application)
EP 16859622 A 20161017; AU 2016345951 A 20161017; CA 3003239 A 20161017; CN 201680062357 A 20161017; JP 2015210258 A 20151026; JP 2016080690 W 20161017; PH 12018500896 A 20180426; US 201615770546 A 20161017