The roasting dust which produced from zinc concentrate roasting process, main contains zinc oxide, zinc ferrite, zinc sulfide, cadmium sulfide, lead sulfate etc. 该种焙烧烟尘的二次焙烧处理工艺存在着环境污染等一系列无法彻底解决的问题。
Zinc sulfide and cadmium sulfide show gradational relationship, and there is a good negative correlation between Zn and Cd with a correlation coefficient of> 0.99, forming a ZnS-CdS complete isomorphous series. 锌硫化物与镉硫化物成渐变的过渡关系,并且Zn与Cd成很好的负相关关系,相关系数达0.99以上,形成ZnS-CdS的完全类质同象系列。