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electrostatic cleaning process

A method of cleaning small sizes of coal, namely, 0.1 to 2 mm, by passing the material over a slowly rotating roller through a high-voltage electrostatic field between the earthed roller and an adjacent wire. Coal loses its charge very slowly and is carried further around by the roller than the impurities, thus effecting separation with reasonable efficiency.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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