EP 3424627 A1 20190109 - NICKEL POWDER PRODUCTION METHOD
Title (en)
NICKEL POWDER PRODUCTION METHOD
Title (de)
NICKELPULVERHERSTELLUNGSVERFAHREN
Title (fr)
PROCÉDÉ DE PRODUCTION DE POUDRE DE NICKEL
Publication
Application
Priority
- JP 2016041665 A 20160304
- JP 2016075529 A 20160405
- JP 2016075530 A 20160405
- JP 2016251266 A 20161226
- JP 2017008562 W 20170303
Abstract (en)
Provided is a production method for maintaining the quality while keeping a high operating rate of the reaction by continuously feeding a solution, seed crystals, and hydrogen gas into a reactor to produce nickel powder, and continuously discharging the resulting powder. The method for producing nickel powder comprises feeding a nickel ammine sulfate complex solution and seed crystals into a reactor, and feeding hydrogen gas into the reactor to subject a nickel complex ion in the nickel ammine sulfate complex solution to a reduction treatment and to thereby produce nickel powder, wherein, in the reduction treatment, while the nickel ammine sulfate complex solution is being continuously fed into the reactor, a temperature inside the reactor is controlled within the range of 150 to 185°C and the feed rate of hydrogen gas is controlled to maintain an inner pressure of the reactor in the range of 2.5 to 3.5 MPa. (149 words)
IPC 8 full level
CPC (source: EP US)
B22F 9/26 (2013.01 - EP US); C22C 1/0433 (2013.01 - EP); B22F 2201/013 (2013.01 - US); B22F 2203/11 (2013.01 - US); B22F 2203/13 (2013.01 - US); B22F 2301/15 (2013.01 - US); B22F 2304/10 (2013.01 - US); B22F 2998/10 (2013.01 - US); B22F 2999/00 (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 3424627 A1 20190109; EP 3424627 A4 20191120; AU 2017226381 A1 20180920; AU 2017226381 B2 20191212; CA 3016390 A1 20170908; CN 108778578 A 20181109; JP 6816755 B2 20210120; JP WO2017150717 A1 20190117; PH 12018501870 A1 20190515; US 2020338641 A1 20201029; WO 2017150717 A1 20170908
DOCDB simple family (application)
EP 17760179 A 20170303; AU 2017226381 A 20170303; CA 3016390 A 20170303; CN 201780015107 A 20170303; JP 2017008562 W 20170303; JP 2018503427 A 20170303; PH 12018501870 A 20180903; US 201716082004 A 20170303