Production of ultrafine cobalt powder from dilute solution

Details Production of ultrafine cobalt powder from dilute solution Production of ultrafine cobalt powder from dilute solution

C - Chemistry, Metallurgy

22

B

53/307

C22B 23/00 (2006.01) B22F 9/22 (2006.01) C22B 23/02 (2006.01)

Patent

CA 1089654

ABSTRACT OF THE DISCLOSURE A process for producing ultrafine cobalt powder in- cludes providing an aqueous solution of cobalt ammine carbonate, with the concentration of cobalt ions being in the range of from about 1 to about 20 grams per liter (gpl). The solution is heated to drive off ammonia and carbon dioxide and precipitate ultra- fine cobalt oxide. The cobalt oxide precipitate is then sep- arated from the solution and heated in a reducing atmosphere to reduce the cobalt oxide to ultrafine cobalt powder.

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