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PRODUCING COKE FROM MIXTURES BASED ON NON-COKING OR POORLY COKING COALS
PRODUCING COKE FROM MIXTURES BASED ON NON-COKING OR POORLY COKING COALS
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机译:基于非焦化或劣质焦煤的混合物生产焦炭
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摘要
Coke prodn. is carried out by coking a mixt. of coals, including non-coking or poorly coking types with a swelling index (SI) of =5. At least a portion of the coal feed is briquetted with a pitch or bitumen having a Kraimer-Sarnow point (KS) of 70-85 degrees C, the rest being in the form of fines such that 80% of the particles are smaller than 2 mm. The improvement comprises regrinding at least part of the briquettes to a size such that 50% of the particles are smaller tan 3-5 mm. Regrinding the briquettes increase the mechanical strength of the coke or allows a greater proportion of non-coking coal to be used.
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