高纯锡中频挥发工艺中的保温罩材质对提纯效果的影响

Insulation Cover Material in High Purity Tin Medium Frequency Volatilization Process Impact on Purification Effect

通过对高纯锡中频挥发工艺中的石墨、石英和刚玉三种材质的保温罩对提纯效果的研究。研究表明,刚玉材质的保温罩对高纯锡中杂质的提纯效果最佳,经济性好,安全性好。采用此种材质的保温罩提纯后的锡中S、Mg、Zn、As、Cd、Pb、Sb、Bi、In等杂质元素能降低至最低值,为高纯锡后续工艺制备纯度为99.99999%以上的超纯锡提供保障。

Research on the purification effect of insulation covers made of graphite,quartz,and corundum in the medium frequency volatilization process of high-purity tin.Research has shown that the insulation cover made of corundum material has the best purification effect on impurities in high-purity tin,has good economy,and is safer.The impurity elements such as S,Mg,Zn,As,Cd,Pb,Sb,Bi,In in the tin purified by using this material's insulation cover can be reduced to the lowest value,providing guarantee for the subsequent preparation of ultrapure tin with a purity of over 99.99999%in high-purity tin processes.