SGTF粉末干式永磁磁选机的研制及应用

Development and Application of SGTF Powder Dry Permanent Magnetic Separator

为解决干旱缺水地区石英砂开发利用难、湿式磁选投资大、生产成本高的问题,提出采用COMSOL MULTIPHYSIC多物理场仿真软件对磁系排列、磁场梯度等磁系特征进行模拟仿真的方法设计新的磁系,并通过选用耐高温型稀土材料磁钢解决了筒体发热和磁块性能之间的矛盾,研制出的SGTF粉末干式永磁磁选机的磁场强度可达597 kA/m,最大处理量为250 t/h。河南某选矿厂的工业应用中,石英砂经SGTF粉末干式永磁磁选机1次分选,铁含量可降低至0.06%,达到了作为生产玻璃原材料的使用标准。研究结果表明:新式粉末干式永磁磁选机的磁场强度及处理能力得到了提升,提高了在非金属除铁中的应用,缩减了生产工艺流程,降低了选矿成本,可为干旱缺水和北方寒冷地区石英砂矿的经济开发提供新的解决方案。

In order to solve the problems of difficult development and utilization of quartz sand in arid and water-deficient areas,large investment in wet magnetic separation and high production cost,a new magnetic system is designed by using COMSOL MULTIPHYSIC multi-physical field simulation software to simulate the magnetic system characteristics such as magnetic system arrangement and magnetic field gradi⁃ent.The contradiction between the cylinder heating and the performance of the magnetic block is solved by selecting the high temperature resistant rare earth material magnet steel.The magnetic field strength of the SGTF powder dry permanent magnet magnetic separator can reach 597 kA/m,and the maximum processing capacity is 250 t/h.In the industrial application of a concentrator in Henan Province,the iron content of quartz sand can be reduced to 0.06%after one separation by SGTF powder dry permanent magnet magnetic separator,which meets the use standard as a raw material for glass production.The research results show that the magnetic field strength and processing capacity of the new powder dry permanent magnet magnetic separator have been improved,the application effect in non-metallic iron removal has been improved,the production process has been reduced,and the beneficiation cost has been reduced.It can provide a new so⁃lution for the economic development of quartz sand ore in arid water shortage and northern cold regions.