Method of injecting pelletized coal through blast furnace tuyere

Details Method of injecting pelletized coal through blast furnace tuyere Method of injecting pelletized coal through blast furnace tuyere

1974-10-16

1976-07-27

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 500

Patent

active

039716546

ABSTRACT:
Fueling a blast furnace by the injection of pelletized coal through hot blast tuyeres improves blast furnace operating efficiency. Pelletizing provides means for using fine coal, more effective removal of pyritic sulfur and an improved fuel which rolls rather than slides. Rolling pellets resist melting during lance injection through hot blast tuyeres better than sliding particles of coal. Pelletizing of fine coal enhances the suitability of a wide variety of coals for replacing coke as a blast furnace fuel.

REFERENCES:
patent: 1349598 (1920-08-01), Basset
patent: 3150962 (1964-09-01), Pearson
patent: 3167421 (1965-01-01), Pfeiffer et al.
patent: 3197304 (1965-07-01), Agarwal
patent: 3240587 (1966-03-01), Schmidt
patent: 3655350 (1972-04-01), Utley
patent: 3756791 (1973-09-01), Mancke
patent: 3775070 (1973-11-01), Messer
Deurbrock AW Bureau Mines Report 7633, 1972 pp. 1-19.

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