Te元素脱除钢中残余Sb的新方法：基于Sb2Te3化合物形成的效率提升

The above-mentioned methods, namely the calcium reaction method and the sulfide flux method, involve forming compounds between Sb and residual elements in the steel liquid with Ca or S, allowing them to be extracted into the slag, thereby achieving the removal of residual elements. Based on this concept, this study conducted a literature review and discovered that when Te, an element with high affinity to Sb, is added to the steel liquid containing residual Sb, Sb2Te3 compound can be formed. Additionally, the density of Sb2Te3 is lower than that of the steel liquid [10]. After the steel liquid solidifies, Sb2Te3 enriches on the surface of the steel ingot, achieving the goal of removing residual elements from the steel without introducing harmful elements. To enhance the efficiency of this method in removing residual elements, the addition of slag after Te is introduced is employed to extract Sb2Te3 from the steel liquid.