摘要
为有效去除锌湿法冶金过程中的微量钴,探索采用臭氧氧化净化ZnSO4溶液中钴的可行性,考察搅拌速度、反应温度、气体流量、溶液pH值、钴离子浓度、锌离子浓度等因素对除钴效果的影响。结果表明:在锌离子初始浓度100 g/L、钴离子初始浓度20 mg/L、温度30℃、气体流量800 mL/min、pH=5.0、搅拌速度800 r/min等条件下,反应30 min后,钴浓度可降至0.2 mg/L,除钴率高达99%。
In order to remove trace cobalt in the process of zinc extractive hydrometallurgy, a novel method to precipitate cobalt from ZnSO4 solution by ozone oxidation was proposed. The factors influencing the effect of removing cobalt, including stirring speed, temperature, gas flow rate, pH and concentrations of cobalt ion and zinc ion were investigated. The results show that the cobalt concentrations and elimination rate can reach 0.2 mg/L and 99%, respectively, under the solution conditions as initial concentrations of cobalt and zinc 20 mg/L and 100 g/L, controlling pH of 5.0, stirring speed of 800 r/min, gas flow rate of 800 mL/min, reacting time of 30 min at 30 ℃.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2013年第4期1140-1144,共5页
The Chinese Journal of Nonferrous Metals
基金
国家自然科技基金资助项目(51104181/E0412)
中国博士后科学基金资助项目(20110491279)
湖南省科技计划资助项目(2010FJ3117)
关键词
臭氧
氧化
除钴率
ZnSO4溶液
ozone
oxidation
cobalt removal rate
ZnSO4 solution