Process for the production of iron oxide fine powder

Details Process for the production of iron oxide fine powder Process for the production of iron oxide fine powder

1985-10-09

1987-10-06

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 24, 241 29, 75 2, B02C 1912

Patent

active

046977449

ABSTRACT:
A process for producing iron oxide fine powder of high purity from an oxide iron ore such as hematite or magnetite by only physical processing is disclosed, which comprises the steps of: providing a preliminarily ground raw material powder of an oxide iron ore or a mixture thereof having the impurity content in a specific range; classifying the raw material iron ore powder under such conditions that fine particles smaller than 10 .mu.m in diameter are removed from the ore powder; optionally treating the classified powder with an acid solution; refining the classified, optionally acid-treated iron ore powder by means of gravity concentration; and finish grinding the refined powder to reduce the particle size to a desired level.

REFERENCES:
patent: 3291398 (1966-12-01), Weston et al.
patent: 3791595 (1974-02-01), Aubrey, Jr.
patent: 4206878 (1980-06-01), Forciea
patent: 4416768 (1983-11-01), Nosseir

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