Production of high purity iron powder

Details Production of high purity iron powder Production of high purity iron powder

C - Chemistry, Metallurgy

21

B

53/33

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

Patent

CA 1129654

PRODUCTION OF HIGH PURITY IRON POWDER ABSTRACT High purity iron powder may be obtained by treat- ing an iron bearing source which contains impurities such as silica along with minor amounts of aluminum, calcium and magnesium to a series of steps which include grinding the iron bearing source followed by subjecting the ground source to a caustic leach at an elevated temperature and pressure. Thereafter the soluble impurities may be separated from the residue, the latter then being reduced by treatment with hy- drogen at an elevated temperature and pressure to convert the iron to the metallic form.

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