C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 23/02 (2006.01) B22F 9/22 (2006.01) C22B 5/12 (2006.01)
Patent
CA 2580655
A method of producing a fine, low bulk density nickel powder, comprising a) charging particles of at least one reducible nickel salt within a furnace so as to form a moving bed of furnace charge, and b) reducing the furnace charge with a H2 containing gas at a temperature ranging from about 300~C to about 500~C, the bed of furnace charge being moved gently so as to minimise formation of hard agglomerates and obtaining a fine, low bulk density nickel powder. A similar method, wherein the furnace charge is static and contained within a shallow bed.
L'invention porte sur un procédé de fabrication de poudre de nickel à faible densité apparente fine consistant a) à charger des particules d'au moins un sel de nickel réductible dans un four afin de former un lit mobile de charge pour four, et b) à réduire la charge pour four avec un gaz contenant H2 à une température comprise entre 300 °C et 500 °C environ, le lit de la charge pour four bougeant faiblement afin de minimiser la formation d'agglomérats solides et afin d'obtenir une poudre de nickel à faible densité apparente et fine. Dans un procédé similaire, une charge pour four est statique et contenue dans un lit creux.
Carriere Patrique Yvon
Collins Michael
Kuula Sandra Marie
Falconbridge Limited
Goudreau Gage Dubuc
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