PURPOSE: To provide the subject control process so designed that part of the raw coal on a coal truck is stored and the rest is charged into a coke oven followed by charging the coke oven with said stored coal, thereby eliminating variation in the bulk density depending on oven height and leveling the mechanical strength of product coke.
CONSTITUTION: Raw coal 5 on a coal truck 3 is transferred to a hopper 11 through the operation of a bucket elevator 10 to hold ca. 20wt.% of the amount to be changed into a chamber in said hopper 11. Thence, a table feeder 4 is actuated to charge the chamber 2 of a coke oven with the rest of raw coal on the coal truck 3. A damper 12 of the hopper 11 is then opened tp charge the chamber 2 with the raw coal 5 in the hopper. Thus, 80wt.% of raw coal to be charged into the chamber 2 is fed to the lower and middle tiers in the chamber 2 via the table feeder 4, while 20wt.% of the raw coal to the upper tier directly through the hopper 11.
KONISHI NOBUAKI
MIZUSAWA MASATOSHI
