Flowability of a mixture of two powders obtained by co-grinding, mixing and surface treatment

被引：10

作者：

Kouadri-Henni, A ^{[1
]}

Azema, N ^{[1
]}

Benhassaine, A ^{[1
]}

机构：

[1] Ecole Mines Ales, Lab Gen Particulaire, F-30319 Ales, France

来源：

POWDER TECHNOLOGY | 1999年 / 103卷 / 01期

关键词：

co-grinding; surface treatment; floodability; flowability; particle size;

D O I：

10.1016/S0032-5910(99)00012-1

中图分类号：

TQ [化学工业];

学科分类号：

0817 [化学工程与技术];

摘要：

Usage properties of powder mixtures like flowability and floodability depend strongly on their granular characteristics: size, shape, surface and spread of particle size. The products used are mixtures elaborated from two micron sized powders, made of synthetic minerals. Their particle size distributions are each initially mono-modal, respectively 5 mu m and 70 mu m. The mixture elaboration procedure consists in making several successive combined stages of co-grinding, mixing and surface treatment by addition of surfactants. We obtain thus several mixtures M-i having different rheological behaviours and particle size distributions-ascertained on a electron beam microscope. The results permitted in understanding the influence of the granular macrostructure and the effect of a surface treatment on a powder's rheological behaviour. (C) 1999 Published by Elsevier Science S.A. All rights reserved.

引用

页码：37 / 43

页数：7