某褐铁矿强磁选-反浮选试验研究

Research on the HIMS-Reverse Flotation Process for a Limonite Ore

根据某褐铁矿的矿石性质,采用一段磨矿、强磁选—反浮选工艺流程,对该矿石进行了选矿试验。试验结果表明,在磨矿细度-0.074mm占60.0%,一次强磁粗选,强磁精矿再选,强磁尾矿再进行二次扫选,强磁精矿再选尾矿和强磁尾矿再选精矿合并进行反浮选,反浮选尾矿返回强磁尾矿再选的闭路工艺流程,可获得产率52.24%,品位54.04%,回收率67.03%的强磁精矿和产率47.76%,品位29.08%,回收率32.97%的最终尾矿。

The process consisting of one stage grinding-HIMS （high intensity magnetic separation）-reverse flotation was adopted for the beneficiation of a limonite ore according to its properties. The test results show that at a 60.0% -200 mesh grinding fineness, by a closed-circuit process of one rougher of HIMS, a re-concentration of HIMS concentrate, two scavengers of HIMS railings, reverse flotation of the railings of re-concentration of HIMS concentrate and the concentrate of re-concentration of HIMS tailing, and reverse flotation tailingg returning to the re-concentration operation of HIMS tailings, an HIMS concentrate with a 52.24% yield, 54.04% grade and 67.03% recovery and a final tailing with a 47.76% yield, 29.08% grade and 32.97% recovery can be obtained.