KINETICS OF THE CHLORINATION OF PYRITE IN AQUEOUS SUSPENSION

被引：12

作者：

BAYRAKCEKEN, S ^{[1
]}

YASAR, Y ^{[1
]}

COLAK, S ^{[1
]}

机构：

[1] ATATURK UNIV,DEPT CHEM ENGN,ERZURUM,TURKEY

来源：

HYDROMETALLURGY | 1990年 / 25卷 / 01期

关键词：

D O I：

10.1016/0304-386X(90)90062-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The kinetics of chlorination of pyrite in aqueous suspension have been investigated. The effects of pyrite particle size (106-125, 125-150, 150-180, 180-250, 250-425 μm), reaction time (0-14400 s), temperature (13-60°C), and speed of stirring (5-20 s-1) were studied. The experimental data were analyzed on the basis of the unreacted shrinking core model. The rate-controlling step was found to be the chemical reaction between chlorine and pyrite for the temperature range 13-35°C, but the diffusion of chlorine through the fluid film for the temperature range 40-60°C. The activation energies for the chemical- and diffusion-controlled cases were calculated as 36.7 and 3.7 kJ mol-1 respectively. © 1990.

引用

页码：27 / 36

页数：10

共 12 条

[1] MODEL SELECTION FOR AQUEOUS SLURRY COAL DESULFURIZATION [J].