| 摘要 |
PROBLEM TO BE SOLVED: To provide a coal dressing system in which water used in coal dressing treatment can easily be cleaned and whose maintenance and control are also easy. SOLUTION: The coal dressing system 100 includes a water tank 101 in which coal dressing water 108 is stored, a sorting chamber 102 in which coal 109 to be sorted is received, and an air chamber 103 for varying the water level in the sorting chamber 102. When air is introduced into the air chamber 103 by operating an air pump 103b, the water level in the air chamber 103 drops and the water level in the sorting chamber 102 rises. When the air in the air chamber 103 is discharged, the water level in the air chamber 103 rises and the water level in the sorting chamber 102 drops. Since pulverized coal is mixed in the water in the water tank 101 through a net 102a, filtration with a polymer microfilter 105 is carried out. The coal dressing water is filtered through the polymer microfilter 105 and clean water with the pulverized coal removed is obtained. COPYRIGHT: (C)2009,JPO&INPIT
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