Smelting Prereduced Iron Ore Pellets
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Prereduced pellets, made from magnetic taconite concentrates in the pilot plant of the Bureau of Mines Minneapolis Metallurgy Research Center, were smelted in the Bureau’s experimental blast furnace at Bruceton, Pa. The pellets averaged 79.0 pet Fe and 11.9 pet SiO2. Two additional supplies of prereduced pellets were obtained from The Steel Co. of Canada Ltd., Hamilton, Ontario, which averaged, respectively, 83.8 pet and 91.3 pet Fe, and 3.1 and 3.0 pet SiO2. Results from smelting these pellets were compared with results from conventional unreduced pellets from the Hilton mine in Quebec, and from Erie Mining Co., Hoyt Lakes, Minn. The blastfurnace tests established that substantial decreases in coke rates and correspondingly higher production rates result from the use of prereduced pellets.
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- 1.M. M. Fine, J. P. Hansen and Norwood B. Melcher: Prereduced Iron Ore Pellets: A New Blast Furnace Raw Material, Bureau of Mines report of inv. 6152, 1962; J. P. Hansen and T. N. Rushton: Experimental Preparation of Prereduced Iron Ore Pellets, Proceedings 23rd Annual Mining Symposium, University of Minn, and Annual Meeting of Minn, section, AIME, Duluth, Minn., pp. 43–48; F. W. Starratt: Duluth and Taconites, Journal of Metals, Apr. 1962 p. 299.Google Scholar
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