SSS-III系列水平磁场立环脉动高梯度磁选机的研制与应用

SSS-II系列水平磁场立环脉动高梯度磁选机虽具有精矿品位高、磁介质不易堵塞、磁系无腐蚀的优点，但磁能利用率不足、磁介质体积量较小、回收率偏低等问题制约了其推广应用。为解决这些问题，以SSS-II系列磁选机为基础，开发了SSS-III系列水平磁场立环脉动高梯度磁选机。该磁选机的双层磁介质盒分选环结构，显著提高磁能利用率、磁介质体积量和分选作用高度，实现强弱磁性颗粒的梯级分选，起到“1粗1扫”短流程选别效果，提升设备处理能力和选矿回收率；双层冲洗卸矿装置确保磁介质不易堵塞的优点得以延续。攀枝花某选钛厂粗选车间的生产实践表明，SSS-III-2750型水平磁场立环脉动高梯度磁选机运行平稳、可靠，在原矿TiO₂品位为9.89%条件下，获得了TiO₂品位为17.54%、TiO₂回收率为86.23%的钛粗精矿，与SSS-II-2750型水平磁场立环脉动高梯度磁选机相比，在精矿TiO₂品位低1.09个百分点的情况下，TiO₂回收率提高了11.91个百分点，与现场某垂直磁场立环脉动高梯度磁选机相比，在原矿TiO₂品位仅高0.43个百分点的情况下，精矿TiO₂品位和回收率分别大幅度提高了3.42和15.56个百分点。

Development and Application of SSS-III Series Vertical Ring Pulsating HGMS with Horizontal Magnetic Field

Although SSS-II series vertical ring pulsating HGMS（High Gradient Magnetic Separator) with horizontal magnetic field has the advantages of high grade concentrate， jamless magnetic medium and no-corrosion magnetic system， the problems of insufficient magnetic energy utilization rate， low volume magnetic medium ， poor recovery rate and so on restrict its popularization and application. In order to solve these problems， and based on SSS-II series magnetic separators， the SSS-III series vertical ring pulsating HGMS with horizontal magnetic field were developed. The machine adopts a special double layer magnetic medium box sorting ring structure， which significantly improves the utilization rate of magnetic energy， the volume of magnetic medium and the height of separation action， realizes the steps sorting of ferromagnetic and low magnetic particles， plays a short process sorting effect of “one roughing and one scavenging”， and improves equipment processing ability and recovery rate. The double layer washing discharging device ensures the advantage of jamless magnetic medium. The production practice of the roughing workshop of a titanium selection plant in Panzhihua showed that the SSS-III-2750 vertical ring pulsating HGMS with horizontal magnetic field run smoothly and reliably. In the case of the grade of TiO₂ in raw ores 9.89 %， titanium roughing concentrate with TiO₂ grade of 17.54 % and TiO₂ recovery rate of 86.23 % was obtained. Compared with the SSS-II-2750 vertical ring pulsating HGMS with horizontal magnetic field，the recovery rate of TiO₂ increased by 11.91 percentage points in the case of the raw ores with grade lowered by 1.09 percentage points. Compared with a on-site vertical ring pulsating HGMS with vertical magnetic field，the grade and recovery rate of TiO₂ increased significantly by 3.42 percentage points and 15.56 percentage points in the case of raw ores grade only higher by 0.43 percentage points.