Process for producing nickel hydroxide

Details Process for producing nickel hydroxide Process for producing nickel hydroxide

C - Chemistry, Metallurgy

01

G

C01G 53/04 (2006.01) H01M 4/52 (2006.01)

Patent

CA 2098262

A process for producing nickel hydroxide from nickel powders, in which the feed nickel powder is directly converted in an aqueous solution containing nitrate and particulate nickel at least at room temperature and a pH in excess of about 6 into nickel hydroxide of a high density. Nickel powders of high surface area, e.g. 0.4 m2/g or higher, typically produced by the thermal decomposition of nickel carbonyl, are particularly suitable as feed materials for this process.

La présente invention vise un procédé de production d'hydroxyde de nickel à partir de poudres de nickel, dans lequel la poudre de nickel de base est directement convertie, dans une solution aqueuse contenant un nitrate et des particules de nickel à une température égale ou supérieure à la température ambiante, dont le pH supérieur à environ 6, en hydroxyde de nickel haute densité. Les poudres de nickel de surface efficace élevée, soit de 0,4 m2/g ou plus, normalement obtenues par décomposition thermique de nickel carbonyl, sont particulièrement indiquées en tant que substance brute pour la mise en oeuvre de ce procédé.

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