Process and apparatus for producing blast furnace coke by coal c

Distillation: processes – thermolytic – And shaping to desired form or configuration – Prior to charging to carbonizing zone

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44 10R, 201 8, 201 24, C10B 5308

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active

041860543

ABSTRACT:
The method of producing blast furnace coke by (1) compacting a finely divided coal wherein at least about 60% by weight of the coal has a diameter of less than about 1/8 inch to form a coal compact, which compact immediately after removal from the compacting means comprises at least about 20% by weight of particles having a particle size of less than 1/4 inch in diameter; (2) breaking the thus formed compact such that the bulk density is sufficiently increased to be capable of conversion into coke suitable for use in large blast furnaces upon carbonization thereof; and (3) carbonizing the broken compact to thereby produce blast furnace coke having a minimum hardness of about 68 and a minimum stability of about 55. The compacting is preferably performed at a pressure equivalent to that achieved by passing the finely divided coal between rolls at a pressure applied to the coal of between about 20 and about 60 tons per lineal inch. Also preferably in the breaking step at least about 95% of the compacted coal is reduced to particle sizes ranging from about one inch to less than about 100 mesh.
The invention also includes apparatus for carrying out the above-described process.

REFERENCES:
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patent: 2466435 (1949-04-01), Jones et al.
patent: 2594226 (1952-04-01), Shea, Jr.
patent: 2935450 (1960-05-01), Jully
patent: 3010882 (1961-11-01), Barclay et al.
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patent: 3483134 (1969-12-01), Olson
patent: 3843559 (1974-10-01), Repik et al.
patent: 3966561 (1976-06-01), Hinkley
Zielinski, H., Present Methods of Coke Manufacture, Warsaw, Poland, National Center for Scientific, Technical, and Economic Information, 1972, pp. 50-62, TT70-55025, published for Dept. of Interior, Washington, D. C.

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