THE OXIDATION OF PYRITE

被引：7

作者：

NAKAMURA, H ^{[1
]}

SATO, S ^{[1
]}

HARA, Y ^{[1
]}

机构：

[1] ASAHI CHEM IND CO LTD,EXPLOSIVES LAB,IND EXPLOSIVE SECT,NOBEOKA 882,JAPAN

来源：

JOURNAL OF HAZARDOUS MATERIALS | 1994年 / 37卷 / 02期

关键词：

Activation energy - Fractional oxidation versus time curves - Interface reaction process - Shrinking unreacted core model;

D O I：

10.1016/0304-3894(93)E0095-J

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The oxidation of pyrite ore in air was studied using a fixed-bed flow reactor. Under isothermal conditions, this oxidation showed a maximum rate during the initial stage and a linear decreasing rate thereafter, and the fractional oxidation versus time curves were in good agreement with a shrinking unreacted-core model. The oxidation rate was affected by the particle size of the pyrite ore. A large particle showed a small initial reaction rate and a large activation energy. Besides, the rate-determining step of a large particle was found to be an interface reaction process while for fine particles it is a diffusion process.

引用

页码：253 / 263

页数：11

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