Method of reducing finely grained material containing iron oxide

Details Method of reducing finely grained material containing iron oxide Method of reducing finely grained material containing iron oxide

1977-06-29

1978-04-18

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 4, 75 26, C21B 1302

Patent

active

040849589

ABSTRACT:
Fine-grained iron oxide reduction in a fluidized bed; a reducing agent in the form of fine-grained solid carbonaceous material containing volatile constituents is introduced into at least one zone of the fluidized bed; in said zone the volatile constituents are driven off, and a tarry material is temporarily formed on the surface of the particles of the carbonaceous material; the fine-grained iron oxide to be reduced is introduced into said zone; iron oxide particles adhere to the tarry carbonaceous particles; in this manner micro-aggregates which are especially desired are formed; but the formation of bigger aggregates is prevented.

REFERENCES:
patent: 2742353 (1956-04-01), Ogorzaly
patent: 2918364 (1959-12-01), Lesher
patent: 3607217 (1971-09-01), Metrailer

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