Production of more concentrated iron product from industrial was

Details Production of more concentrated iron product from industrial was Production of more concentrated iron product from industrial was

1996-07-26

1999-01-05

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75436, 75500, 75504, 75585, 75961, C21B 1314

Patent

active

058556451

ABSTRACT:
A method for producing a more concentrated iron product from an industrial waste materials stream comprising iron and non-iron constituents such as EAF and basic oxygen furnace dust generally comprising the steps of compacting or briquetting the waste materials stream, roasting the waste materials stream at temperatures above about 980.degree. C. to convert the iron compounds to direct reduced iron, crushing the roasted waste materials stream, separating the iron compounds contained in the waste materials stream by magnetic separation or flotation, and providing the iron compounds back to the EAF or basic oxygen furnace.

REFERENCES:
patent: 4389040 (1983-06-01), Ulrich et al.
patent: 4765829 (1988-08-01), Beckmann et al.
patent: 5667553 (1997-09-01), Keegel Jr.
patent: 5667555 (1997-09-01), Myerson et al.

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