| 摘要 |
PROBLEM TO BE SOLVED: To provide a dust concentration control method and a crushing facility, which prevent the occurrence of a trouble, such as the stoppage of the facility, even if the concentration of dust resulting from crushing operation gets higher. SOLUTION: The crushing facility comprises a transfer conveyor 2 which transfers a material 100 to be crushed to a crusher 4, the crusher 4 which crushes the material 100, a dust collecting facility 11 which collects the dust resulting from the crush of the material 100 through a pneumatic transfer pipe 5, a dust concentration detecting means 50 which is set on the pneumatic transfer pipe 5 and detects the concentration of the dust, a dust concentration/transfer speed changing means 60 which creates a transfer speed command commanding a transfer speed inverse proportion to the dust concentration, and a motor speed control means 70 which controls a motor 3 of the transfer conveyor 2 on the basis of the transfer speed command. COPYRIGHT: (C)2004,JPO&NCIPI
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