Coating mass distributions of seed particles in a tumbling fluidized bed coater

被引：25

作者：

Abe, E ^{[1
]}

Yamada, N ^{[1
]}

Hirosue, H ^{[1
]}

Nakamura, H ^{[1
]}

机构：

[1] Kyushu Natl Ind Res Inst, Tosu, Saga 841, Japan

来源：

POWDER TECHNOLOGY | 1998年 / 97卷 / 01期

关键词：

fluidized bed coating; coating mass distribution; particle growth; uniformity of coating; spraying;

D O I：

10.1016/S0032-5910(98)00004-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In order to control the extent of particle coating, it is necessary to clarify how the amount of coating material of each individual seed particle varies with operating condition. The influence of these conditions on the distribution of the mass of coating material, deposited on each single seed particle treated in a tumbling fluidized bed, was experimentally examined in this work. As a result, the coating mass per unit surface area of a single seed particle was proven to obey a normal distribution by number. Moreover, it also became clear that the coefficient of variation of the coating mass distribution, c(v), decreased with increasing coating time and size of the seed particle, and with decreasing their holdup. However, the rotational speed of the disk, which forces the aggregative coated particles apart, hardly affected the c(v) value in the experiment. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：85 / 90

页数：6

共 8 条

[1]

ABE E, 1986, J SOC POWDER TECHNOL, V23, P319

[2]

Geldart D, 1986, GAS FLUIDIZATION TEC, P107

[3]

KOBAYASHI N, 1973, KAGAKU KOGYO, V17, P87

[4] COATING MASS-DISTRIBUTION FROM A SPOUTED BED SEED COATER - EXPERIMENTAL AND MODELING STUDIES [J].