Process of recycling iron oxides and plastics in steelmaking

Details Process of recycling iron oxides and plastics in steelmaking Process of recycling iron oxides and plastics in steelmaking

1994-11-25

1996-09-10

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75544, 75569, 75767, 75961, C21B 304

Patent

active

055542077

ABSTRACT:
A process for recovering iron values from waste iron oxide, especially iron oxide dust from steelmaking furnaces, wherein the iron oxide is mixed with a water-insoluble thermoplastic material and heated to melt the plastic to form a binder for the iron oxide particles, and discrete bodies formed of the mixture are returned to a furnace to recover the iron values. The plastic binder is present in an amount sufficient to serve as a reductant to reduce the iron oxide to metallic iron when the plastic is combusted with oxygen in the furnace. The invention also includes the discrete bodies so formed of iron oxide and thermoplastic binder.

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patent: 4802914 (1989-02-01), Rosen et al.
patent: 5000783 (1991-03-01), Dingeman et al.
patent: 5364441 (1994-11-01), Worner

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