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投稿时间:2019-05-06 修订日期:2019-10-31
投稿时间:2019-05-06 修订日期:2019-10-31
中文摘要: 为提高湿法炼锌净化工序中除钴效率,开展了有机除钴剂(OACR剂)在不同的净化工艺条件下的除钴实验,测试了活性炭吸附残余OACR剂后,吸附后液的粘度、表面张力等物理性质、红外透过光谱以及阴极极化曲线,并用吸附后液配制电解液进行了模拟电解实验。结果表明:OACR剂可在较宽的工艺范围内高效除去净化前液中钴,适当的活性炭吸附操作可大部分除去净化后液中残余的OACR剂。吸附后液的析锌电位与硫酸锌溶液的析锌电位相当,析氢过电位略有增大,说明吸附后液进入锌电解沉积工序不会对电解过程带来不利影响。模拟电解实验中,吸附后液配制电解液的电积锌电流效率不低于纯硫酸锌配制电解液的电积锌电流效率。将OACR剂应用于湿法炼锌净化工序可提高除钴效率并对电解无负面影响。
Abstract:The cobalt removal efficiencies of OACR on different purifying conditions in hydrometallurgical process of zinc have been investigated. After residual OACR in purified solution had been absorbed by activated carbon, the purified solution was analyzed with IR, cathodic polarization and some physical properties such as viscosity, surface tension and so on. The results show: OACR can efficiently remove cobalt from purifying solution at wide range of operating conditions, most of residual OACR in purified solution can be absorbed by activated carbon. The cathodic reduction potential of zinc in absorbed solution was equal to that in pure zinc sulphate solution. Meanwhile, the potential of cathodic hydrogen evolution from absorbed solution was a little larger than that from pure zinc sulphate solution. All the cathodic polarization results indicated that the absorbed solution as the ingredients of electrolyte will not cause the negative effect on electrolysis process of zinc. It can be found form the results of simulated electrolysis experiments that the current efficiency of electrodepositing zinc by using purified solution as the ingredients of electrolyte was no less than that by using pure zinc sulphate solution as he ingredients of electrolyte. It can be concluded that applying OACR to hydrometallurgical extractive zinc will improve the cobalt removal efficiency in purifying step with little negative effect on electrodepositing zinc.
文章编号:20190506001 中图分类号: 文献标志码:
基金项目:
作者 | 单位 | |
郑淑萍 | 四川大学分析测试中心 | 147450215@qq.com |
任锐* | 四川大学化学工程学院 | renruifriend@163.com |
杨溪野 | 四川大学化学工程学院 | 1076163371@qq.com |
引用文本:
郑淑萍,任锐,杨溪野.有机除钴剂(OACR剂)在湿法炼锌工艺中的应用[J].矿冶,2019,28(6):.
郑淑萍,任锐,杨溪野.有机除钴剂(OACR剂)在湿法炼锌工艺中的应用[J].矿冶,2019,28(6):.