PURPOSE: To economically dry raw coal, by feeding the coal in the course of cooling redhot coke by the circular grate quenching method.
CONSTITUTION: Layered redhot coke 0 (at about 900W1,200°C) fed from a feeding hopper 1 is conveyed rightward while being cooled with an inert gas in a cooling chamber 101. On the way, raw coal 1000 is fed from a hopper 1001 at a site where the coke temp. becomes about 400°C or lower and dried by varporizing water. Then the cooled coke and dried coal are discharged via a discharging hopper 3 and classified into coke (product) of particle size ≥ a specific value (e.g., 25mm), and a mixture consisting of coke of particle size ≤ the specific value and the raw coal by a grizzly 1002. The mixture is supplied to a coke oven by a conveyer 1003.
YAMASHITA KOUSUKE
KISHIMOTO AKIO
YONEDA MUNEO
