摘要
采用真空蒸馏法代替传统方法从含铊渣中脱除镉和锌。从理论上分析了铊与上述杂质分离的可能性,通过实验研究了采用真空蒸馏法从含铊渣中脱除镉、锌的最佳工艺条件。实验表明,控制蒸馏温度560℃,恒温时间40min,即可使残余物中镉、锌的含量降低到0.27%,0.0072%,铊的挥发率为1.49%。与其他方法相比,真空蒸馏法具有流程短、能耗低、无污染、无中间渣、劳动强度低、生产成本低等优点。
A vacuum distillation method instead of traditional methods to remove cadmium and zinc from thallium-containing residue was introduced. The possibility of separation of thallium from cadmium and zinc was analyzed theoretically, The optimum process condition for removal of cadmium, zinc from the residue containing thallium was established. The results showed that the content of cadmium, zinc in the residue could be reduced to 0. 27% and 0. 0072% respectively, and the evaporation rate of thallium was 1.49% when distillation was performed at 560℃ for 40 min. Comparing with other methods, vacuum distillation had the advantage of shorter flow sheet, lower energy-consumption, pollution-free, no intermediate slag, lower labor-intensity, and lower production costs.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2009年第5期733-736,共4页
Chinese Journal of Rare Metals
基金
真空冶金国家工程实验室项目
云南省有色金属真空冶金重点实验室项目资助
关键词
铊
真空蒸馏
脱杂
thallium
vacuum distillation
removing impurity
