粟村鉱業所大谷鉱山における選鉱の合理化

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書誌事項

タイトル別名
  • Rationalization of the Beneficiation at Ôtani Mill
  • アワムラ コウギョウショ オオタニ コウザン ニ オケル センコウ ノ ゴウリカ
  • Rationalization of the Beneficiation at Ôtani Mill

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抄録

The considerable rationalization of the beneficiation at Ôtani Mill has been accomplished by the Awamura Mining Co. Ltd, since it's reopening 1952. Principal improvements are given as follows:<BR>1) The crushing capacity has been increased to 150% by the adoption of wet crushing.<BR>2) It makes possible to be more effective for the heavy media separation process, by means of changing feed size range to-20+4mm from-25+6mm, and choosing optimum viscosity of heavy media. In order to get optimum viscosity, magnetite has mixed with ferro-silicon for heavy fluid.<BR>3) To avoid over-grinding the closed-circuit operation (Ball mill and Dorr-F classifier) was changed to the open-circuit operation (Rod mill and Elliptex vibrating screen), so the mill capacity has increased to 230% with reduction of cost.<BR>4) By the application of electro-static separation and differential-flotation methods, chief minerals such as scheelite, cassiterite, chalcopyrite and pyrites has been effectively separated, and mill recovery has increased.<BR>5) The average grade and recovery of scheelite concentration has advanced by the adoption of fore table.<BR>6) By the use of wet cyclone for classification of flotation tailing, the cost of tailing disposal has been a little or not.<BR>By these improvements the saving of more than 57% in the total costs has been attained in 1959 as compared with in 1952.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 76 (865), 465-474, 1960

    一般社団法人 資源・素材学会

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