永磁组合箱式磁选机的设计及应用  

Development and Application of a Permanent Magnet Combined Box Magnetic Separator

作　　者：张宪伟 周明亮 袁致涛[3] 魏波 李丽匣[3] 张强 张俊飞 ZHANG Xianwei;ZHOU Mingliang;YUAN Zhitao;WEI Bo;LI Lixia;ZHANG Qiang;ZHANG Junfei(Shenyang Shengshi Wuhuan Science and Technology Co.,Ltd.,Shenyang 110027,China;Liaoning Wuhuan Special Materials and Intelligent Equipment Industry Technology Research Institute Co.,Ltd.,Shenyang 110027;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]沈阳盛世五寰科技有限公司,辽宁沈阳110027 [2]辽宁五寰特种材料与智能装备产业技术研究院有限公司,辽宁沈阳110027 [3]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《金属矿山》2023年第3期222-226,共5页Metal Mine

基　　金：“十三五”国家重点研发计划项目(编号:2019YFC1907702)。

摘　　要：目前较粗粒级磁铁矿的磁选普遍采用筒式磁选机,较细粒磁铁矿运用磁选柱等精选设备可以获得良好的磁选效果,而筒式磁选机和磁选柱对于微细粒嵌布的磁铁矿分选效率低。为了提高微细粒磁铁矿的分选效果,创新性地利用机械摆动磁系和复合力场作用,研制了永磁组合箱式磁选机。设备主要结构有机架、磁系、极板、分选箱、给矿给水系统、传动系统等,磁系位于分选箱两侧往复摆动,分选区磁场强度强弱变化,强磁场强度有利于微细粒磁铁矿形成磁链沉降,弱磁场强度有利于冲洗水打散磁链、消除夹杂。设备以永磁材料做磁源,磁系稳定,节约能耗;长方体箱式结构与磁选柱等圆柱型结构相比,耗水量低、分选腔内磁场分布均匀,适用于-75μm磁铁矿的精选作业,通过组合叠加分选箱和极板,可以适应不同规模选厂的要求。以本钢贾家堡铁矿-75μm占96.50%、TFe品位62.83%的三段磁选精矿为研究对象,进行精选试验,在适宜操作条件下,获得了TFe品位67.81%、回收率96.11%的精选指标。The magnetic separation of coarser magnetite is generally adopted by cylindrical magnetic separator.The finer magnetite can obtain a good magnetic separation effect by using a separation device such as a magnetic separation column.However,the cylindrical magnetic separator and magnetic separation column have low separation efficiency for microgranular magnetite.In order to improve the separation effect of fine magnetite,a permanent magnet combined box magnetic separator was developed by innovative use of mechanical swing magnetic system and compound force field.Its main structure is frame,magnetic system,plate,sorting box,the ore and water feed system,transmission system and so on.The magnetic system of the equipment is oscillated on both sides of the sorting box,so that the strength of the magnetic field varies.The stronger magnetic field strength is conducive for the formation of magnetic chain settlement of fine magnetite,and the weaker magnetic field strength is conducive to the flushing water to disperse the magnetic chain and eliminate inclusion.The equipment uses permanent magnet material as magnetic source,magnetic system is stable and energy saving;Compared with the cylindrical structure such as magnetic separation column,cuboid box structure has lower water consumption and uniform magnetic field distribution in the separation chamber.This equipment is suitable for-75μm magnetite cleaning operation.By combining the separation box and plate,it can meet the requirements of different scale of the separation plant.For magnetite with-75μm of 96.50%,a concentrate with TFe grade of 67.81%and recovery of 96.11%was obtained under the condition of feeding grade of 62.83%.

关 键 词：永磁组合箱式磁选机 分选原理 受力分析 结构设计 磁系设计 

分 类 号：TD457[矿业工程—矿山机电]