Method for producing coarse powder, hardened iron oxide material

Details Method for producing coarse powder, hardened iron oxide material Method for producing coarse powder, hardened iron oxide material

1974-07-22

1976-10-05

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 9, 75 26, C22B 108, C22B 110

Patent

active

039842290

ABSTRACT:
A method for agglomerating finely divided iron oxide material, substantially consisting of hematite and/or magnetite, preferably enriched iron ore concentrates, and hardening the agglomerates thus formed. The fine material is agglomerated by rolling, micropelletizing or other granulating methods to a particle size distribution convenient fluidizing purposes, whereafter the material is transferred to a fluidized bed furnace in which the bed is heated by introducing gaseous or liquid fuel and gas containing free oxygen or by hot gases. The major portion of the material is then removed from the bed in an agglomerated and hardened condition.

REFERENCES:
patent: 3094409 (1963-06-01), Renzoni
patent: 3776533 (1973-12-01), Vlnaty

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