CONTROL SYSTEM OF COKING COAL GRANULE SIZE IN OPERATION CONTROL OF COKE OVEN

PURPOSE:To conduct the granule size control optimized for each brand of coking coal in conducting the centralized control of operations, ranging from reception of coking coals of various brands to production and shipment of coke, using computers. CONSTITUTION:The widths of crushing slits of crushing blades of a coking coal crushing means are automatically adjusted by measuring the granule size of a sample of each crushing batch of each brand of crushed coking coal with a granule size measuring means, measuring the water content and granule size of each brand of coking coal to be blended after crushing with a water- content and granule-size measuring means, and subjecting the data obtd. by these measurements to computer processing. The variations in granule size between brands and between applications are corrected by preparing a treatment table accompanying the crushing of each brand of coking coal and by adjusting the granule size of each brand to just the same value as attempted by automatically controlling the width of the crushing slits. Thus, the centralized control of granule size of crushed coal using a computer is enabled.