中山炭礦における亜炭の重液選炭

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書誌事項

タイトル別名
  • Dense-Media Separation Process to Lignite in Nakayama Colliery
  • 中山炭砿における亜炭の重液選炭
  • ナカヤマ タンコウ ニ オケル アタン ノ ジュウエキ センタン

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抄録

The coal seam in a Nakayama Colliery of Yamagata Prefecture consists of a lignite and a coaly shale, but this Nakayama lignite is inferior somewhat to other lignite in the washability chracteristics.<BR>A piston jig was installed in this coal preparation plant seven years ago for the purpose of washing The minus 80mm lignite, but the performance of the separation of this separator was unsatisfactory.<BR>Therefore, a drum type separator using copper slag ds medium was installed in October 1960 at the same preparation plant.About 10tons of minus 80mm plus 6mm lignite per hour is continuously run through the plant with this separator in about 4 hours per day.When the performances of separation of minus 80mm plus 6mm lignite with a drum type separator were compared with the results of separation of minus 80mm lignite with a jig separator during the past halfayear, it was found that (1) the washed coal increased in the yield from 10 to 15 percent, (2) the ash content of washed coal was same, (3) the sharpness of the separation and the separating effectivness were both satisfactory.But the several problems of the reclamation of medium, the purification of medium, the defacement of machine and the freezing of wash water in the winter season would be solved in future.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 77 (879), 819-822, 1961

    一般社団法人 資源・素材学会

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