Manufacturing formed coke

Details Manufacturing formed coke Manufacturing formed coke

C - Chemistry, Metallurgy

10

B

202/10

C10B 53/04 (2006.01) C10B 53/08 (2006.01) C10L 5/00 (2006.01) C10L 5/04 (2006.01)

Patent

CA 1063060

ABSTRACT OF THE DISCLOSURE An improvement is provided in a method for manufacturing a high-strength formed coke in a slight mutual agglomeration solely from formed coal in a conventional horizontal type coke oven battery, which includes the steps of sieving a plurality of different types of raw material coal fines to a size not exceeding 1.5 mm., fixing such plurality of different types of raw material coal fines thus sieved with a binder, forming that mixture to produce a formed coal. charging only that formed coal into the coke oven battery, and then carbonizing the formed coal in the coke oven battery under conventional carbonizing conditions to produce a formed coke. The improvement resides in blending the plurality of different types of coal fines after said sieving step to form a mixture of coal fines so as to satisfy the following conditions: (a) AP index: 75 at the minimum, (b) Mean maximum reflectance: 1.20% at the minimum, and (e) A [dilatation] - [contraction] value of fro -2% to +5% when carbonized under conventional conditions in the coke oven battery at a heating rate of 5°C./min. (350 - 600°C.). In this way, an improved high- strength formed coke having a percentage of co-agglomeration within the range of from 40 to 90% is provided, which is especially useful in blast furnaces.

248526

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