| 摘要 |
PURPOSE:To expand a range of utilization of deashed particle coal by a method wherein deashed particle coal can be supplied to the fine powder burning boiler. CONSTITUTION:Coal 1 is finely divided by a fine powder crashing machine 2. After making fine powder by the fine powder breaking machine 2, or during a breaking operation, water is added to it to make aqueous slurry. The slurry is supplied to a high speed agitating tank 3. The high speed agitating tank 3 is supplied with a binder, for example, oil 4 is supplied and then added to the aqueous slurry. The deashed particle coal formed afte a high speed agitation at the high speed agitating tank 3 is supplied to a seive 5 together with drain water 7 containing separated ash, the delimed particle coal 6 is primarily separated from the drain water 7 containing separated ash. Then, water is added to it to make a aqueous slurry 9, it is supplied to a settlement tank 10, the remaining ash is separated from the deashed particle coal by a specific weight and at the same time it is secondarily separated from the water 11 containing remaining ash. Thereafter, the deashed particle coal 12 ia supplied to the boiler 13. With this arrangement, it is made possible to expand a range of utilization of deashed particle coal.
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