EP 3424626 A4 20191030 - NICKEL POWDER PRODUCTION METHOD

Title (en)

NICKEL POWDER PRODUCTION METHOD

Title (de)

NICKELPULVERHERSTELLUNGSVERFAHREN

Title (fr)

PROCÉDÉ DE PRODUCTION DE POUDRE DE NICKEL

Publication

EP 3424626 A4 20191030 (EN)

Application

EP 17759771 A 20170222

Priority

JP 2016042668 A 20160304
JP 2017006623 W 20170222

Abstract (en)

[origin: EP3424626A1] Provided is a method for producing nickel powder, wherein fine nickel powder serving as seed crystals needed for production of nickel powder is produced from a solution containing a nickel ammine sulfate complex according to the amount needed for the production of the nickel powder. The method for producing nickel powder is characterized in that: the solution containing the nickel ammine sulfate complex, an insoluble solid, and a dispersant are continuously fed into a reaction vessel, followed by stirring to prepare a solution containing a nickel complex ion; hydrogen gas is blown into the prepared solution to reduce the nickel complex ion in the solution containing the nickel complex ion, thereby forming a precipitate of nickel particles on the surface of the insoluble solid; and thereafter the post-reduction solution is extracted from the reaction vessel. (135 words)

IPC 8 full level

B22F 9/26 (2006.01); B22F 1/05 (2022.01)

CPC (source: EP US)

B22F 1/05 (2022.01 - 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)

C-Set (source: EP US)

B22F 2999/00 + B22F 9/26 + B22F 2201/013

Citation (search report)

[E] EP 3357609 A1 20180808 - SUMITOMO METAL MINING CO [JP]
[IA] JP 5796696 B1 20151021
[IA] WO 2015122534 A1 20150820 - KOCHI UNIVERSITY NAT UNIVERSITY CORP [JP], et al
See references of WO 2017150305A1

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

DOCDB simple family (publication)

EP 3424626 A1 20190109; EP 3424626 A4 20191030; AU 2017227207 A1 20180927; AU 2017227207 B2 20191121; CA 3016415 A1 20170908; CN 108778577 A 20181109; JP 2017155319 A 20170907; JP 6641632 B2 20200205; PH 12018501872 A1 20190515; US 2019009343 A1 20190110; WO 2017150305 A1 20170908

DOCDB simple family (application)

EP 17759771 A 20170222; AU 2017227207 A 20170222; CA 3016415 A 20170222; CN 201780015054 A 20170222; JP 2016042668 A 20160304; JP 2017006623 W 20170222; PH 12018501872 A 20180903; US 201716081980 A 20170222