Abstract

High-purity tin is widely used in advanced technologies such as aerospace, electronic information, and nuclear industry. It has become a key material supporting the development of human science and technology innovation. However, there are few studies on the preparation methods of high purity tin. A novel technique was developed to purify 99.99682% tin by zone refining in an argon atmosphere. The impacts of zone melting conditions, such as the segregation coefficient, zone melting rate, and the number of zone melting passes, on the purity of refined tin were experimentally studied. The results showed that the segregation coefficients of Ag, Al, As, Bi, Ca, Cu, Fe, Ni, Pb, Au, Co, and Zn were less than 1, and the segregation coefficient of Sb was greater than but close to 1. Zone melting rates had an obvious effect on zone refining, while the number of passes had little effect. The 99.99682% purity tin was refined into 99.99906% purity tin under the optimized conditions at a zone melting rate of 0.6 mm/min and after 10 cycles of zone melting and cooling.

中文翻译：

---

区域熔融法制备高纯锡

摘要

高纯度锡被广泛用于航空航天，电子信息和核工业等先进技术。它已成为支持人类科技创新发展的关键材料。但是，关于高纯度锡的制备方法的研究很少。开发了一种新技术，通过在氩气中进行区域精炼来纯化99.99682％的锡。实验研究了区域熔化条件，如偏析系数，区域熔化速率和区域熔化通过次数，对精炼锡纯度的影响。结果表明，Ag，Al，As，Bi，Ca，Cu，Fe，Ni，Pb，Au，Co和Zn的偏析系数小于1，Sb的偏析系数大于但接近1 。区域熔化率对区域精炼有明显影响，而通过次数影响不大。在优化的条件下，以0.6 mm / min的区域熔化速率以及10个区域熔化和冷却循环之后，将99.99682％纯度的锡精炼成99.99906％纯度的锡。