杂质在真空蒸馏产物铽中的分布（英文）

发布时间：2018-02-03 09:42

本文关键词： 真空蒸馏提纯修正分配系数金属铽杂质液态金属　出处：《Transactions of Nonferrous Metals Society of China》2017年06期 　论文类型：期刊论文

【摘要】：通过真空蒸馏实验和理论分析研究了杂质在蒸馏产物金属铽中的分布规律。研究结果表明:在蒸馏产物中,钛杂质在蒸馏初期的含量为220 mg/kg,在蒸馏中期杂质含量缓慢增加,到了蒸馏提纯末期,杂质含量高达2260 mg/kg,钛的修正分离系数为1/19.02,在蒸馏初始阶段,钛原子在液态金属中的扩散达到准稳态,且理论计算结果与实验结束相吻合;铜杂质的在蒸馏产物中的分布与钛相反,在蒸馏初始阶段铜含量为380 mg/kg,到了蒸馏提纯末期,铜含量线性降至290 mg/kg,其修正分离系数为17.99,理论计算结果与实验结果不一致。
[Abstract]:The distribution of impurities in the distilled product of terbium metal was studied by vacuum distillation experiment and theoretical analysis. The results showed that the content of titanium impurity in the distillation product was 220 mg/kg at the beginning of distillation. The impurity content increased slowly in the middle stage of distillation. At the end of distillation purification, the impurity content was as high as 2260 mg / kg, and the modified separation coefficient of titanium was 1 / 19.02, which was in the initial stage of distillation. The diffusion of titanium atoms in liquid metal reaches quasi-steady state, and the theoretical results are in good agreement with the end of the experiment. The distribution of copper impurities in distillation products is opposite to that of titanium. The copper content in the initial stage of distillation is 380 mg / kg, and at the end of distillation purification, the copper content decreases linearly to 290 mg/kg. The modified separation coefficient is 17.99, and the theoretical results are inconsistent with the experimental results.
【作者单位】：北京有色金属研究总院稀土材料国家工程研究中心有研稀土新材料股份有限公司;
【基金】：Project(51504036) supported by the National Natural Science Foundation of China Project(2012CBA01207) supported by the National Basic Research Program of China Project(2011AA03A409) supported by the National High-Tech Research and Development Program of China
【分类号】：TG146.45
【正文快照】： matrix metal,respectively)can be evaporated1 Introductionpreferentially,the impurities withβi1 will be remainedmostly in the crucible,and the impurities withβi≈1High purity metallic terbium is a key rawcannot be separated.LI and LIU[7,8]considered th

【参考文献】