Production of high purity iron powder

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

1978-07-19

1979-05-15

Ozaki, G.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 05BA, 75 05AA, 75121, 423152, C21B 108, C22B 6100

Patent

active

041546083

ABSTRACT:
High purity iron powder may be obtained by treating 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 hydrogen at an elevated temperature and pressure to convert the iron to the metallic form.

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patent: 4054443 (1977-10-01), Jaco

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