Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1979-07-10
1982-04-27
Lewis, Michael L.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 3, 75 25, 264111, 264117, 264122, C21B 304, C22B 702
Patent
active
043268838
ABSTRACT:
A novel process and apparatus are provided for deoiling and agglomerating mill scale to form deoiled pellets suitable for use in a sinter mix without objectionable evolution of oil vapors during the sintering process. In general, the process comprises (a) forming a mix of oil-bearing mill scale and calcined lime fines; (b) balling the mix to form green mill scale-lime pellets; and (c) heating the green pellets in an oxidizing atmosphere to a temperature sufficient to effect ignition and substantially complete combustion of the oil in the pellets. In most cases it is preferred to dry the green pellets from step (b) at a low temperature prior to heating in step (c).
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patent: 3684478 (1972-08-01), Fegan et al.
patent: 3767179 (1973-10-01), Larson
patent: 4213779 (1980-07-01), Caswell
Ball, D. F., et al. Agglomeration of Iron Ores; Am. Elsevier Pub. Co., New York, N.Y.; pp. 40, 41, 306, 307, (1973).
Inland Steel Company
Lewis Michael L.
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