Determination of the mixing time in a discontinuous powder mixer by using image analysis

被引：33

作者：

Daumann, Bjoern ^{[1
]}

Fath, Abdelkrim ^{[1
]}

Anlauf, Harald ^{[1
]}

Nirschl, Hermann ^{[1
]}

机构：

[1] Univ Karlsruhe TH, Inst Mech Proc Engn & Mech, D-76128 Karlsruhe, Germany

来源：

CHEMICAL ENGINEERING SCIENCE | 2009年 / 64卷 / 10期

关键词：

Discontinuous powder mixing; Mixing efficiency; Image analysis; Dispersion coefficient; Powder sampling; MIXTURES; HOMOGENEITY; SOLIDS; MODEL;

D O I：

10.1016/j.ces.2009.01.032

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study reports on research results in the field of powder mixing in a discontinuously operated charge mixer. The mixing time for a confidence interval can be determined from the mixing efficiency that characterizes the mixing of the participating solid components as a function of the mixing time. The mixing efficiency is determined here with the help of an image analysis method developed for these purposes. The particle fraction, that is interesting in terms of its distribution, is partially replaced for this purpose by a similarly behaving but optically well-identifiable tracer material. A dispersion coefficient can be obtained from the analysis of the mixing trial. The practical application of statistics on image analysis is described and discussed along with a description of the possibilities and limitations of the measurement method. The description of the procedure to determine the dispersion coefficient is built on that. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.

引用

页码：2320 / 2331

页数：12

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