Determination of Power Consumption for Suspension Mixing in Stirring Equipments and Stirred Ball Mills

作     者：Viktoria Mannheim Zoltan Simenfalvi 

作者机构：Dept. of Chemical Machinery University of Miskolc Miskolc-Egyetemv6ros 3515 Hungary 

出 版 物：《材料科学与工程（中英文A版）》 (Journal of Materials Science and Engineering A)

年 卷 期：2012年第2卷第7期

页      面：572-578页

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：搅拌设备 搅拌球磨机 混合 功耗 测定 实验室测量 实验过程 数学形式 

摘      要：This paper presents the theory for determination of power consumption for mixing in stirring equipments and the experimental results for a laboratory stirred mill. This work is concerned with mixing on the molecular scale of suspensions. The power consumption for mixing can be determined by a method based on the dimensional analysis. In this case the stirring equipments have similar geometry. The basic equation is known, but a specific mathematical form is unknown for mixing by professional literatures. Stirred mills are still up-to-date and relatively new ones and only few investigations have been previously published on the power consumption. During the experiments the main technical parameters have been systematically adjusted. The laboratory stirred mill is operating with turbulent flow. The dynamic viscosity of suspension can be calculated by rheological measurements. The survey data are represented in shear diagrams. According to the theoretical and experimental measurements, the absolute dynamic viscosity of suspension can be written in generally and mathematically form as well. In relationship of equations, the Stirrer Reynolds number and the Froude number can be identified. Industrial sizes can be determined by a new scale-up model on the basis of the laboratory measurements.