Method of making iron powder

Details Method of making iron powder Method of making iron powder

B - Operations, Transporting

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F

75/155, 53/24

B22F 9/04 (2006.01) B22F 9/22 (2006.01) C21B 13/00 (2006.01) C21B 15/00 (2006.01)

Patent

CA 1057537

Abstract of the Disclosure Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800° and 1000° C The oxide is heat-treated prior to calcination or Cao is added to enhance formation of iron fibers. The reducing atmosphere may in parts include hydrogren or the last phase of reduction is carried out in hydrogen. The iron cake is cooled and broken up in a grinder. The resulting powder has low bulk density due to a fiber-like, nonporous consistency of its particles. Grinding may continue to increase bulk density.

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