| 难选氧化锌矿氨浸动力学 |
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| 引用本文： | 朱云,胡汉,苏云生,杨保民. 难选氧化锌矿氨浸动力学[J]. 过程工程学报, 2002, 2(1): 81-85 |
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| 作者姓名： | 朱云 胡汉 苏云生 杨保民 |
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| 作者单位： | 昆明理工大学材料与冶金工程学院,云南,昆明,650093 |
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| 基金项目： | 云南省科学基金资助项目(编号:2000E0027M) |
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| 摘 要： | 兰坪氧化锌矿氨浸的动力学实验表明，氧化锌矿的氨浸动力学遵从不生成固体产物层的未反应核缩减模型，即符合1–(1–a)1/3=[MkCn/(brd0)]t方程. 通过研究氨水的浓度、温度以及矿石粒度对难选氧化锌矿浸出速率的影响，发现氧化锌矿氨浸反应为一级反应，得到反应的活化能为11.1 kJ/mol，为边界层扩散控制.
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| 关 键 词： | 氧化锌矿；氨浸；动力学；一级反应；活化能 |
| 文章编号： | 1009-606X(2002)01-0081-05 |
| 修稿时间： | 2001-04-09 |
Kinetics of Leaching Poorly-floated Zinc-oxide-ore with Ammonia |
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| ZHU Yun,HU Han,SU Yun-sheng,YANG Bao-min. Kinetics of Leaching Poorly-floated Zinc-oxide-ore with Ammonia[J]. Chinese Journal of Process Engineering, 2002, 2(1): 81-85 |
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| Authors: | ZHU Yun HU Han SU Yun-sheng YANG Bao-min |
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| Abstract: | Tests indicate that the kinetics of leaching poorly-floated zincoxideore with ammonia comply with the shrinking un-reacted core model without solid product. By investigating the effects of ammonia concentration, temperature and size of ore on the leaching rate, it was suggested that the leaching of poorly-floated zinc-oxide-ore with ammonia is one of the first order reaction. Its activation energy is 11.1 kJ/mol, indicating that the external mass transfer was the rate controlling step. |
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| Keywords: | zinc-oxide-ore leaching with ammonia kinetics first order reaction activation energy |
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