白云鄂博氧化矿强磁选精矿浮选工艺研究

Research on the Flotation Process for the HIMS Concentrate of Baiyunebo Oxide Ore

包钢选矿厂现行反浮选工艺流程对白云鄂博氧化矿强磁选精矿的选别效果较差,使白云鄂博氧化矿的精矿质量受到影响。为此,对白云鄂博氧化矿强磁选精矿进行了单一反浮选方案、反浮选—正浮选方案及正浮选—反浮选方案的试验比较。根据比较结果,采用反浮选—正浮选方案进行闭路流程试验,取得了精矿铁品位为59.32%,铁回收率为64.52%的较好选别指标。

The reverse flotation currently used for treating the concentrate of high intensity magnetic separation （HIMS） of Baiyunebo oxide ore in BaoSteel＇s concentrator has poor separation performances, affecting the concentrate quality. Tests were therefore made on several processes including single reverse flotation, reverse flotation-positive flotation, and positive flotation-reverse flotation. The results showed that the closed flowsheet of reverse flotation-positive flotation achieved the best results, with the iron concentrate grading 59.32% at a recovery of 64.52%.