从内蒙古某铁选矿厂尾矿回收萤石研究

为高效利用内蒙古某铁矿选矿厂尾矿中的萤石资源，对其开展了详细的工艺矿物学分析和浮选试验研究。试验结果表明:在磨矿、磁选除铁后，采用硫酸为pH调整剂、水玻璃为抑制剂、L-1001为捕收剂，通过一次粗选九次精选二次扫选的闭路浮选流程，可获得CaF₂品位97.12%、回收率85.73%的浮选精矿，再经强磁选可获得CaF₂品位97.78%、全流程回收率78.25%的萤石精矿。 

Investigation on Recovering Fluorite from Tailings of an Iron Ore Concentrator in Inner Mongolia

To achieve efficient utilization of fluorite resources in the tailings of an iron concentrator in Inner Mongolia, process mineralogy and flotation tests were carried out. The results showed that following iron removal by grinding and magnetic separation, flotation concentrate with CaF₂ grade of 97.12% and recovery of 85.73% was obtained by using sulfuric acid as pH regulator, sodium silicate as inhibitor, and L-1001 as collector through the closed circuit flotation comprising one roughing, nine cleaning, and two scavenging. Further, the fluorite concentrate with CaF₂ grade of 97.78% and full process recovery rate of 78.25% could be obtained through high intensity magnetic separation.