Method for purifying iron oxide

Details Method for purifying iron oxide Method for purifying iron oxide

1992-09-08

1994-05-17

Shah, Mukund J.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

4231503, 423633, C22B 100, C01G 4900

Patent

active

053126025

ABSTRACT:
A method is described for purifying iron oxide, for example, in the form of magnetite or hematite slime, which preferably contains quartz as the impurity. The method comprises calcinating the iron oxide together with alkali carbonate and thereafter leaching with a weak aqueous solution of an acid or a mixture of acids.

REFERENCES:
patent: 2875039 (1959-05-01), Bachmann
Aldrich Chemical Company, Inc. 1990, p. 767.

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