PURPOSE: To obtain a raw material giving coke of good quality with low cost, by a process wherein coked coal is crushed, dried, and then separated into coarse coal and pulverized coal, which is deashed and thereafter mixed with the coarse coal again.

CONSTITUTION: Coking coal from coal yard 1 is ground into pieces at a crushing stage 2 and blended in a blender 3 in a given ratio to produce a blended coal, which is then dried in a dryer 4. Then pulverized coal of a high ash content is separated, extracted out of the blended coal by, e.g., air classification in the dryer 4 and collected by a dust collector 5 to suppress dust scattering. After being deashed in a deashing stage 6, the collected pulverized coal is mixed with coarse coal not collected by the collector 5 again, and the mixture is fed to a coke oven 7 and carbonized to give a coke of good quality.