PRODUCING COKE

PURPOSE:To produce a coke having a uniform quality by subjecting a pulverized coal in an undried state to determination of particle size and water content and controlling conditions for carbonization and/or charging factors based on the results of the determination. CONSTITUTION:Samples of a pulverized coal in an undried state are each col lected in an amount of 3-5kg per run of sampling at predetermined intervals, supplied to a control feeder 2 via a hopper 1, subjected to determination of water content by means of an infrared moisture meter 3 and supplied to a sifter 5 having a mesh size l(3-5mm) close to the intended particle size. The oversize coal particles is placed in a hopper 6 while the undersize coal particles is placed in a hopper 7. The coal particles in the hoppers 6, 7 are weighed to determine the coal particl size by means of an electronic weigher 9. From the above-obtained data on particle size and water content are calculated the particle size of the pulverized coal in a dry state using the given formula, and the conditions for carbonization and/or charging factors are controlled based on the particle size obtained by the calculation.