摘要
本研究以亚硫酸钠(Na_(2)SO_(3))为还原剂,探讨在铂钯置换后液还原碲(Te)的过程中,为降低后液中Te含量,提高铂钯置换后液中Te的浸出效果,对Na_(2)SO_(3)质量浓度、反应温度、Na_(2)SO_(3)反应时长、反应酸度和添加时长进行了工艺研究。结果表明,Na_(2)SO_(3)的质量浓度为100 g/L,Na_(2)SO_(3)添加时长为60 min,反应温度为60~70℃,体系中反应酸度为60 g/L、反应时长为70 min的条件最为适宜。工艺优化后,后液含碲量下降了45.2%,Te浸出率可达到最高的95.43%。
In this study,sodium sulphite(Na_(2)SO_(3))was used as the reducing agent to investigate process of reducing tellurium(Te)in the liguid after platinum-palladium replacement.In order to reduce the Te content in the liquid and improve the leaching effect of Te in the liquid after plutinum-palladium replacement,the Na_(2)SO_(3) mass concentration,reaction temperature,Na_(2)SO_(3) addition time,reaction acidity,and addition time of platinum-palladium replacement were stuided.The results showed that the mass concentration of Na_(2)SO_(3) was 100 g/L,Na_(2)SO_(3) was added for 60 min,the reaction temperature was 60~70℃,and the reaction acidity was 60 g/L and 70 min in the reaction system.After the process optimization,the tellurium content of the posterior solution decreased by 45.2%,and the Te leaching rate could reach the highest rate of 95.43%.
作者
邓金亮
DENG Jinling(Guixi Smelter,Jiangxi Copper Corporation Limited,Guixi 335424,China)
出处
《湖南有色金属》
CAS
2024年第4期30-33,共4页
Hunan Nonferrous Metals
关键词
亚硫酸钠
反应酸度
沉碲后液中碲含量
碲浸出率
还原条件
sodium sulfite
reaction acidity
tellurium content in tellurium solution
tellurium leaching rate
reducing conditions
