実操業カラム浮選プロセスの機能分析　　２段一軸拡散モデルを利用した考察

DOI Web Site 被引用文献2件 参考文献12件
  • 所 千晴
    東京大学大学院工学系研究科地球システム工学
  • 岡屋 克則
    東京大学大学院工学系研究科地球システム工学
  • 岡野 靖彦
    東京大学大学院工学系研究科地球システム工学

書誌事項

タイトル別名
  • Performance Analysis of a Flotation Column in Operation. Study by a two-stage axial diffusion model.
  • ジツ ソウギョウ カラムフセン プロセス ノ キノウ ブンセキ 2ダン 1ジク カクサン モデル オ リヨウ シタ コウサツ
  • - Study by a two-stage axial diffusion model -
  • - 2段一軸拡散モデルを利用した考察 -

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抄録

The authors proposed the mathematical model for the pulp layer in a flotation column by the two-stage axial diffusion with first order reaction model in the former paper. The Wehner and Wilhelm's as well as Danckwerts' boundary conditions have been partly modified and then applied to the feed point, the pulp level and the tailing point of the column. This model makes it possible to estimate the behaviors of particles that haven't yet attached (free particles) at the pulp level. <br> The proposed model has three unknown parameters, that is, the Peclet · Bodenstein number, the collection rate constant and the concentration of drainage particles from the froth layer. From the sensitivity analysis, it was found that the proposed model has little sensitivity to the Peclet · Bodenstein number, but some sensitivity to other parameters, especially to the concentration of drainage particles. In this study, the Peclet · Bodenstein number was assumed from the empirical expression derived by Mankosa et al.(1992), and the collection rate constant and the concentration of drainage particles were estimated by a least squares regression fit to the data sampled from an industrial operation, concerning the superficial concentration of attached particles as well as free particles. It is estimated by investigation of those parameters that the cleaning effect prevails exclusively not in the pulp layer but in the froth layer.<br>

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  • 資源と素材

    資源と素材 116 (12), 994-998, 2000

    一般社団法人 資源・素材学会

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