Application of DEM simulation to an intensive mixer (第6回資源リサイクル・材料科学に関する日韓国際シンポジウム特集号)

スポンサーリンク

概要

• 論文の詳細を見る

• The discrete element method (DEM) was applied to describe the basic characteristics of particles in an intensive mixer that is expected to grind only the surfaces of particles with a particular agitator and is applied in many industries. Surface grinding experiments using a sample of bauxite particles were also conducted to compare with the simulation. The roles of the pan and agitator were estimated from the DEM simulations and it was revealed that employing only agitator rotation increases the particle mobility in the vertical direction, while employing both pan and agitator rotation increases the mobility in the horizontal direction and stably maintains large mobility in the vertical direction. We also investigated the correlation between the rates of energy dissipation during interparticle contact calculated from DEM simulation results and the abrasion rate estimated from experimental results. The abrasion rate was estimated from the particle size distribution obtained from the surface grinding experiments using an intensive mixer charged with bauxite particles and a population balance model in which two mechanisms of attrition—abrasion and fracture—are considered. The results show that the abrasion rate decreased with an increase in energy dissipation due to friction, which suggests that the energy dissipation of the friction obtained from the DEM simulation results could be used to estimate the abrasion rate in the surface grinding process.

• 2009-09-10

著者

• Yamashita Tatsuya

  Major In Earth Resources And Environmental Engineering Graduate School Of Creative Science And Engin

• TOKORO Chiharu

  Department of Resources and Environmental Engineering, School of Creative Science and Engineering, F

• KUBOTA Hidetoshi

  Major in Earth, Resources and Environmental Engineering, Graduate School of Creative Science and Eng

• OWADA Shuji

  Department of Resources and Environmental Engineering, School of Creative Science and Engineering, F

• Owada Shuji

  Department Of Resources And Environmental Engineering School Of Creative Science And Engineering Fac

• Tokoro Chiharu

  Department Of Resources And Environmental Engineering School Of Creative Science And Engineering Fac

• Kubota Hidetoshi

  Major In Earth Resources And Environmental Engineering Graduate School Of Creative Science And Engin

• TOKORO Chiharu

  Department of Creative Science and Engineering, Faculty of Science and Engineering, Waseda University

関連論文

• Application of DEM simulation to an intensive mixer (第6回資源リサイクル・材料科学に関する日韓国際シンポジウム特集号)
• A quantitative modeling of co-precipitation phenomena in wastewater containing dilute anions with ferrihydrite using a surface complexation model (第4回 日韓資源リサイクル・材料科学に関する国際シンポジウム特集号)
• Dry Flotation: A Novel Electrostatic Separation by Modifying Particle Surface with Surfactant and Electrolyte (第2回 日韓資源リサイクル・材料科学に関する国際シンポジウム特集号)
• Coagulation Using Kerosene for Magnetic Deinking of Waste Office Paper
• Use of Kerosene to Improve Toner-Ink Liberation for Office Paper Recycling
• Quantitative Evaluation of the Abrasion Rate in Attrition Washing on Lead Contaminated Soil from Shooting Ranges
• Effect of Ion Water Washing of Neutralized Sludge Contaminated by High Concentrations of Chloride

スポンサーリンク