Treatment of pelletized iron ores

Details Treatment of pelletized iron ores Treatment of pelletized iron ores

1984-06-18

1986-03-25

Rutledge, L. Dewayne

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266156, 75 5, C22B 408

Patent

active

045778388

ABSTRACT:
A system for providing thermal and chemical energies for the production of pelletized iron ore concentrates while allowing a reduction of a portion of the material in process. The material in process is introduced as ore fines, pelletized and fired in an indurator to produce feedstock for reduction by further processing. A portion of the material in process is diverted to a reduction plant. The reduction plant provides thermal and chemical energies for the indurator. In a preferred embodiment, a low temperature plasma generator is employed, either as the reduction plant or to provide thermal and chemical energies for reduction. When a distinct reduction plant is employed, top gases from such plant may be supplied to the indurator to provide thermal and chemical energies therefor and to the plasma generator for recarburization thereof. The material in process may be diverted as ore fines or as fired or unfired pelletized ore concentrates.

REFERENCES:
patent: 3314780 (1967-04-01), Holowaty et al.
patent: 3776533 (1973-12-01), Vlnaty
patent: 3853536 (1974-12-01), Tylko
patent: 4362554 (1982-12-01), Santen
patent: 4362555 (1982-12-01), Santen et al.

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