Method for the production of a feedstock containing usable iron

Details Method for the production of a feedstock containing usable iron Method for the production of a feedstock containing usable iron

1995-01-31

1996-12-10

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75724, 75725, 75753, 75759, 75961, C22B 1934, C21B 1314

Patent

active

055826318

ABSTRACT:
A method for the production of an iron-based feedstock suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by combining an iron poor material such as exhaust fumes from metals production processes with the waste streams, treating the combined waste stream with an ammonium chloride leaching solution, separating the undissolved precipitates comprising iron compounds from the leachant solution, and further treating the undissolved precipitants by elevated temperature roasting, resulting in the iron-based feedstocks.

REFERENCES:
patent: 3849121 (1974-11-01), Burrows
patent: 4071357 (1978-01-01), Peters
patent: 5208004 (1993-05-01), Myerson
Direct Reduced Iron Iron & Steel Society Aug. 1982 TN 707 D56 p. 45.

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