| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for carrying out previous treatment of coke raw material coal, excellent in workability, productivity, mass production and reliability, capable of preventing occurrence of dust when coke raw material coal is charged into a coke oven or carried, preventing deterioration of quality of by-products such as tar and ammonia produced in a coke oven and further preventing trouble such as defect of rotation of a conveyer by suitably controlling addition amount of a binder. SOLUTION: This method for carrying out previous treatment comprises a drying step for drying water content in coke raw material coal charged into a coke oven 15 to 2-6% water content and classifying step for classifying the coke raw material coal treated by the drying step into a crude particle group containing >=95wt.% crude particles having >=100μm particle size and >=80wt.% crude particles having >=300μm particle size and a fine particle group other than the crude particle group. The crude particle group treated in the classifying step is charged into the coke oven 15 to prevent occurrence of dust.
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