期刊
POWDER TECHNOLOGY
卷 173, 期 1, 页码 59-71出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.powtec.2006.11.015
关键词
measurement of powder flow; die-shoe filling rig; critical velocity; high-speed video; rotary press
In the pharmaceutical industry it is important to understand the factors that influence the flowability of a powder and to identify suitable experimental procedures which can be used to evaluate powders and guide the selection of process parameters. This paper determines the flowability of seven pharmaceutical powders using a model die-shoe filling rig. Dimensional analysis is employed to provide a framework for the interpretation of experimental results and to guide the development of procedures to extrapolate the results to other die and shoe geometries. It is demonstrated that the variation of mass delivered into a standard die as a function of shoe velocity provides a measure of flowability. Qualitative and quantitative studies were undertaken using a high-speed video system and by determining the critical shoe velocity, i.e. the shoe velocity above which incomplete filling occurs. (c) 2006 Elsevier B.V All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据