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过程工程学报 ›› 2015, Vol. 15 ›› Issue (6): 982-987.DOI: 10.12034/j.issn.1009-606X.215291

• 反应与分离 • 上一篇    下一篇

含铟氧化锌烟尘加压硫酸浸出工艺优化

罗文波 王吉坤 赵兴凡 王国卫 张忠益   

  1. 昆明理工大学 冶金与能源工程学院 昆明理工大学 冶金与能源工程学院 云南永昌硅业股份有限公司 云南永昌硅业股份有限公司 云南永昌硅业股份有限公司
  • 收稿日期:2015-07-29 修回日期:2015-09-08 出版日期:2015-12-20 发布日期:2015-12-20
  • 通讯作者: 罗文波

Optimization of Pressure Leaching Process of Indium-bearing Zinc Oxide Dust with Sulfuric Acid

LUO Wen-bo WANG Ji-kun ZHAO Xing-fan WANG Guo-wei ZHANG Zhong-yi   

  1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Yunnan Yongchang Silicon Industry Co.,Ltd Yunnan Yongchang Silicon Industry Co.,Ltd Yunnan Yongchang Silicon Industry Co.,Ltd.
  • Received:2015-07-29 Revised:2015-09-08 Online:2015-12-20 Published:2015-12-20
  • Contact: LUO Wen-bo

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被引次数

6

摘要： 对含铟氧化锌烟尘加压浸出进行正交实验及单因素实验，考察各因素对浸出的影响. 结果表明，各因素对铟浸出率的影响显著程度为初始硫酸浓度>液固比>压力>温度>时间，对锌浸出率为初始硫酸浓度>液固比>温度>时间>压力. 优化工艺条件为温度140℃，釜内压力0.6 MPa，时间90 min，液固比8 mL/g，初始硫酸浓度160 g/L，搅拌速率500 r/min. 该条件下锌和铟浸出率分别达99%和91%以上，锌与铟可同时高效浸出，浸出液残酸低，工艺稳定性好

关键词: 氧化锌烟尘, 加压酸浸, 铟, 锌, 浸出率

Abstract: Pressure leaching of indium-bearing zinc oxide dust in sulfuric acid medium was studied by orthogonal experiments and single-factor experiments. The results showed that the important degree of various factors affecting the leaching rates of In followed the order of initial acidity > ratio of liquid to solid > pressure > temperature > time, and that affecting the leaching rate of zinc was the initial acidity > ratio of liquid to solid > temperature > time > pressure. The optimum conditions were obtained as the leaching temperature of 140℃, pressure 0.6 MPa, reaction time 90 min, ratio of liquid to solid 8 mL/g, initial acidity of 160 g/L, and stirring speed 500 r/min. Under the optimum conditions, the leaching rates of zinc and indium were over 99% and 91%, respectively, zinc and indium could be efficiently leached out with low content residual acid and good process stability.

Key words: zinc oxide dust, pressure acid leaching, indium, zinc, leaching rate

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