尾小屋鉱山におけるサイクロン重選について

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  • 加賀谷 悌蔵
    日本鉱業株式会社中央試験所第一試験室
  • 岡部 章
    日本鉱業株式会社中央試験所尾小屋鉱業所選鉱課選鉱係
  • 深見 進
    日本鉱業株式会社中央試験所河守鉱業所鉱務課

書誌事項

タイトル別名
  • On the Heavy Media Separation by Cyclone-Type Separator at Ogoya Mine
  • ビ ゴヤ コウザン ニ オケル サイクロンジュウセン ニ ツイテ

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抄録

It was proved at the ore dressing plant of the Ogoyq Mine that the economicql qpplication of heavy media separation by a cyclone-type separator was feasible, and its use in practical operations successfully testified by charging fine particles of ore ranging from 0.5mm to 8mm was formerly fed directly into the mill head.<BR>head. From the results of basic tests it was determined that such factors as inlet pressure, specific gravity of the heavy media feed, and cone ratio had an important bearing on separation and that a proper combination of these factors would enable a close approach to the ideal conditions of sink and float separation. The relationship established between separation results and sharpness in separation, as obtained within the scope of these tests indicated the tendency of a very close resemblance in the relationship existing between the copper content in the waste and the percentage of discard and that between the former and the specific gravity in separation derived from Tromp's distribution curves but on the other hand showed a reverse tendency in relationship with the Terra indices. It was also ascertained that a feed inlet pressure ranging from 0.5 to 1.0kg/cm2 was sufficient and that ferro-silicon as a media acted more favourably on pyrite concentrates.<BR>concentrates. In putting this new unit, which saw initial operation in April 1960 and has been in continuous performance since, special features were devised such as the uniform and smooth circulation of the heavy medium, means for preventing contamination of the heavy media, improvements in screening efficiency, maintenance of a fixed inlet pressure to cyclone, and control of specific gravity of heavy media.<BR>From the operational results it could be observed that the successful removal of large quantities of waste permitted a leeway of 19 percent in grinding and floating capacity leading to a possible savings in initial installation costs at the time of mass production and also reduction inflotation running cost.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 77 (879), 765-771, 1961

    一般社団法人 資源・素材学会

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