摘要
通过确定未活化的硬锌渣、活化后的硬锌渣以及失活条件下的硬锌渣在盐酸体系中的浸铟反应的表观活化能来研究机械活化过程中粒度变细对硬锌渣浸铟反应活化能的影响。结果表明:机械活化可强化硬锌渣中铟的浸出,表现为经搅拌磨活化60min的硬锌渣的浸铟反应的表观活化能比未活化时降低了13.14kJ/mol。在机械活化过程中由粒度变细所引起表观活化能降低了7.28kJ/mol,其余主要是由内部的晶体缺陷等所引起的。
The effect of particle size on the apparent activation energy of leaching reaction of indium from hard - zinc with hydroehlorieacid is studied in this paper. Three kinds of hard - zinc are selected ,i. e. the unaetivated hard -zinc, activated hard -zinc, and deactivated hard -zinc. The results show that mechanical activation may enhance the leaching rate of indium with hydrochloric acid. For example, the apparent activation energy was decreased to 13.14kJ/mol after activation for 60min by stirring mill. Among this decreased value of apparent activation energy, the effect of decreasing particle size contributes 7.28kJ/mol and the other is contributed by crystal defect.
出处
《矿产综合利用》
CAS
2009年第5期44-46,共3页
Multipurpose Utilization of Mineral Resources
基金
广西科学研究与技术开发计划项目(桂科能0842003-16)
关键词
铟
机械活化
粒度
活化能
Indium
Mechanical activation
Particle size
Activation energy
