Process for recovering iron and zinc from steel making dusts

Details Process for recovering iron and zinc from steel making dusts Process for recovering iron and zinc from steel making dusts

1981-06-22

1983-08-02

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 26, 75 88, 75 69, 75 71, 75 77, 75 85, 75 11, 423148, C22B 1930, C21B 1500

Patent

active

043964230

ABSTRACT:
The object of the invention is to provide a process for the recovery of iron and zinc from steel making flue dust.
The process comprises subjecting the flue dust to a carbiding step in a fluid bed in the presence of a reducing agent and a carbon supplying agent to break down the zinc ferrite structure and convert the iron to iron carbide, followed by heating the residue or product of the carbiding step to recover zinc by evaporization.
The iron carbide produced may be introduced into a steel making furnace for the production of steel.
An alternative procedure is the recovery of iron carbide and zinc by magnetic separation from the gangue after the carbiding step and before separation of zinc from iron carbide.

REFERENCES:
patent: 1780323 (1930-11-01), Waring
patent: 1879834 (1932-09-01), Waring
patent: 2774662 (1956-12-01), Graham et al.
patent: 3262771 (1966-07-01), Ban
patent: 3754890 (1973-08-01), Fitch
patent: 3756804 (1973-09-01), Stevenson
patent: 3770416 (1973-11-01), Goskel
patent: 3785802 (1974-01-01), Roberti et al.
patent: 3849121 (1974-11-01), Burrows
patent: 3896211 (1975-07-01), Mayor et al.
patent: 3999981 (1976-12-01), Brandstatter
patent: 4053301 (1977-10-01), Stephens, Jr.
patent: 4071357 (1978-01-01), Peters
patent: 4256496 (1981-03-01), Brandstatter

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