BRIQUETTING OF PULVERIZED COAL

摘要

PROBLEM TO BE SOLVED: To provide a method for briquetting a pulverized coal by which the filling density of a briquetted product is improved and strength is maintained in spite of a method without using a binder at the time of briquetting. SOLUTION: A fine powder having a prescribed particle size or below is mixed with a coarse powder having a prescribed particle size or above in raw material coal used for producing coke so as to provide 90-30 wt.% of the fine powder based on the total amount of the fine powder and the coarse powder and the resultant mixture is then press briquetted without using a binder at all or without substantially using the binder. The fine powder is preferably an undersize of a sieve having a sieve opening of 0.3 mm or below and the coarse powder is preferably an oversize of a sieve having a sieve opening of 1.5 mm or above. When the sieve opening of a sieve having a fine sieve opening is A mm and the sieve opening of a sieve having a coarse sieve opening is B mm, the (B-A) is preferably >=1.2 mm.