铂钯置换后液提取碲的工艺研究
Rocess Study of Tellurium Extraction After Platinum-palladium Replacement
邓金亮1
作者信息
- 1. 江西铜业股份有限公司贵溪冶炼厂,江西 贵溪 335424
- 折叠
摘要
本研究以亚硫酸钠(Na2SO3)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Na2SO3 质量浓度、反应温度、Na2SO3 反应时长、反应酸度和添加时长进行了工艺研究.结果表明,Na2SO3 的质量浓度为 100 g/L,Na2SO3 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%.
Abstract
In this study,sodium sulphite(Na2SO3)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 Na2SO3 mass concentration,reaction temperature,Na2SO3 addition time,reaction acidity,and addition time of platinum-palladium replacement were stuided.The results showed that the mass concentration of Na2SO3 was 100 g/L,Na2SO3 was added for 60 min,the reaction temperature was60～70℃,and the reaction acidity was60 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%.
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Key words
sodium sulfite/reaction acidity/tellurium content in tellurium solution/tellurium leaching rate/reducing conditions引用本文复制引用
出版年
2024
NETL
NSTL
万方数据