Fired iron-ore pellets having macro pores and process for produc

Details Fired iron-ore pellets having macro pores and process for produc Fired iron-ore pellets having macro pores and process for produc

1978-11-09

1981-03-24

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 5, 75 41, C21B 500, C22B 114

Patent

active

042578060

ABSTRACT:
Fired iron-ore pellets are disclosed which are prepared by crushing iron ore to be pelletized, mixing a carbonaceous material of grain sizes ranging from 0.1 to 3 mm in diameter to the crushed iron ore in an amount of up to 4% by weight, pelletizing the mixture thus prepared, and firing the resulting pellets; thereby providing pellets throughout each of which is dispersed macro-pores of sizes ranging from 0.1 to 3 mm in diameter at a ratio of up to 25% relative to all pores contained in each pellet.

REFERENCES:
patent: 2356024 (1944-08-01), Anderson
patent: 2696432 (1954-12-01), Davis
patent: 3189436 (1965-06-01), Burstlein
patent: 3313617 (1967-04-01), Ban et al.
patent: 3754889 (1973-08-01), Dominguez et al.
patent: 4082539 (1978-04-01), Sugawara
patent: 4082540 (1978-04-01), Sasaki et al.
Perry, J. H., ed.; Chemical Engineers' Handbook, 4th ed., McGraw-Hill; N.Y., New York, pp. 9-3, 9-4, (1963).
Merriman, A. D.; A Dictionary of Metallurgy, MacDonald & Evans, Ltd. London, pp. 165, 244, (1958).

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