Production of direct reduced iron and/or pig iron from industria

Details Production of direct reduced iron and/or pig iron from industria Production of direct reduced iron and/or pig iron from industria

1996-06-26

1998-12-15

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75419, 75430, 75504, 75724, 75961, 423109, C22B 1934

Patent

active

058490639

ABSTRACT:
A method for producing direct reduced iron or/and pig iron from an industrial waste materials stream such as EAF and blast furnace dust generally comprising the steps of separating the materials contained in the waste materials stream by magnetic separation or flotation, briquetting the iron-containing materials separated during the separation process with carbon, and providing the briquettes to a reduction furnace or/and to a small scale blast furnace or cupola furnace to produce direct reduced iron or/and pig iron, respectively. The exhaust streams from the process are further treated to recover chemical values and to allow the recycle of the exhaust streams to the main process.

REFERENCES:
patent: 4389040 (1983-06-01), Ulrich et al.
patent: 4765829 (1988-08-01), Beckmann et al.
patent: 5464596 (1995-11-01), Myerson et al.
patent: 5571306 (1996-11-01), Myerson et al.
patent: 5582631 (1996-12-01), Myerson et al.
patent: 5667553 (1997-09-01), Keegel

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