Pellets useful in shaft furnace direct reduction and method of m

Details Pellets useful in shaft furnace direct reduction and method of m Pellets useful in shaft furnace direct reduction and method of m

1974-08-02

1976-08-17

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 94, C22B 108, C22B 910

Patent

active

039751821

ABSTRACT:
Iron ore or concentrates containing about 0.5 to about 3.0% silica, 0.5 to 1.0% bentonite and 96.5 to 99.0% iron oxide together with 7.0 to 12.0% moisture is pelletized, the pellets are surface-coated with about 1 to about 4.5% limestone and fired at a temperature of about 2100.degree. to about 2400.degree.F., the formed pellets being suitable for direct reduction temperatures above 1400.degree.F in a shaft furnace with a minimum of clustering.

REFERENCES:
patent: 2806776 (1957-09-01), Veale
patent: 3684478 (1972-08-01), Fegan
patent: 3748116 (1973-07-01), Reed
patent: 3849113 (1974-11-01), Ban

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