微粒石炭浮選における脱灰性の評価と単体分離度の推定 A Method to Characterize Flotation Performance of Fine Coal and Estimate its Liberation

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The authors have developed a new method to evaluate coal flotation behavior. The liberation degree of mineral matter in feed and the ultimate ash content of froth product can be estimated using this method. Modified release analysis and oil agglomeration tests were carried out using different feed size of coal. The results were plotted on combustible recovery vs. ash content of clean coal curves and on combustible (or mineral matter) recovery vs. yield curves. Graphic analysis of these curves is proposed to give the ultimate ash content of coal concentrate obtained under ideal conditions and the liberation degree of mineral matter of flotation feed. By comparing these curves with conventional flotation results, the mass of mineral matter entrapped mechanically in froth was determined. In this paper the above procedures are described in detail using Datong coal. The ultimate ash content decreased and reached about 1 % with decreasing average feed sizes, smaller than 2μm, and the liberation degree increased to above 90 %. The mass of entrapped mineral matter increased drastically for feed smaller than 20μm.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan  

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(6), 421-425, 1998-06-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10002467611
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4512273
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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