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-

概要

論文の詳細を見る
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 Wilhelms 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 havent yet attached (free particles) at the pulp level. 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.
社団法人資源・素材学会の論文
2000-12-25