| 摘要 |
PROBLEM TO BE SOLVED: To provide a wooden fuel which can realize the effective utilization of coconut husks and waste wooden materials hitherto discarded as scraps and which can be used as a coal substitute fuel, to provide its production process and its utilization method. SOLUTION: A raw material wood preliminarily crushed to a prescribed size is fed through a supply tube toward the center of a grinding table of a vertical grinder equipped with a two-stage classifying rotary separator and is ground with multiple rollers driven with the rotation of the grinding table. The ground material is discharged from the periphery of the grinding table, dried and conveyed by a gas blown out from the lower side of the periphery of the grinding table, and introduced into the two-stage classifying rotary separator installed on the upper side of the grinding table, where it is classified into a fine powder component and a coarse powder component. The fine powder component is discharged out of the grinder, giving an objective product. The coarse powder component is returned to the center of the grinding table through the supply tube present close to the grinding table. COPYRIGHT: (C)2003,JPO
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