细粉物料干式磁选机的国内发展现状  

Domestic Development Status of Dry Magnetic Separator for Fine Powder Materials

作　　者：孟祥志[1] 胡旭 王佳强 李艳军[3] 李文博[3] MENG Xiangzhi;HU Xu;WANG Jiaqiang;LI Yanjun;LI Wenbo(School of Mechanical Engineering and Automation,Northeastern University,Shenyang 110819,China;Production Department of Dong′anshan Sintering Plant,Angang Group Mining Co.,Ltd.,Anshan 114001,Liaoning,China;School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学机械工程与自动化学院,沈阳110819 [2]鞍钢集团矿业有限公司东鞍山烧结厂生产部,辽宁鞍山114001 [3]东北大学资源与土木工程学院,沈阳110819

出　　处：《有色金属（选矿部分）》2024年第5期34-45,共12页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金资助项目(51974068);辽宁省优秀青年基金资助项目(2022-YQ-10)。

摘　　要：与湿式磁选相比,干式磁选具有节省水资源、选矿流程短、设备投资少、占地面积少、选矿成本低等优势。我国的铁矿资源品位越来越低、嵌布粒度细,亟需开发细粒级物料干式磁选机。根据现有各种型式干式磁选机的结构和工作原理将其分为磁重联合干式磁选机、直接给料风重磁联合干选机、风力送料干式磁选机等。磁重联合干式磁选机主要有固定磁系筒型干式磁选机、干式对辊强磁选机、带式旋转磁场干式磁选机、双环形移动磁系干式磁选机、干法强磁板式磁选机、干法筛式强磁选机、振动高梯度干式磁选机等典型型式。直接给料风重磁联合干选机主要有风力滚筒干式磁选机、风力带式干法磁选机、筒式流态化干式磁选机、三级干式永磁筒式磁选机、风磁耦合干式磁选机、干式风力磁选机、风重磁联合力场磁选机等典型型式。风力送料干式磁选机主要有风力送料板式磁选机、新型干式风磁联合磁选机、干式风力永磁精选矿机、风力给料干式永磁磁选机等型式。对以上20余种干式磁选机的结构、磁选原理、特点、适用范围等进行了介绍,并对各类干式磁选机的优势和劣势进行了分析。Compared with wet magnetic separation,dry magnetic separation has the advantages of saving water resources,short beneficiation process,less equipment investment,less floor space and low beneficiation cost.The grade of iron ore resources in China is getting lower and lower,and the dispersed grain size is fine,so it is urgent to develop dry magnetic separator for fine-grained materials.According to the structure and working principle of various types of dry magnetic separators,they are divided into several types,such as magnetic-gravity combined dry magnetic separator,direct feeding wind-gravitymagnetic combined dry magnetic separator,wind feeding dry magnetic separator and so on.Magneticgravity combined dry magnetic separators mainly include fixed magnetic system barrel dry magnetic separator,double roll high intensity dry magnetic separator,belt rotating magnetic field dry magnetic separator,double ring moving magnetic system dry magnetic separator,dry high intensity magnetic plate separator,dry screen high intensity magnetic separator,vibrating high gradient dry magnetic separator and other typical types.Direct feeding wind-gravity-magnetic combined dry separator mainly includes wind drum dry magnetic separator,wind belt dry magnetic separator,cylinder fluidized dry magnetic separator,three-stage dry permanent magnet cylinder magnetic separator,wind-magnetic coupling dry magnetic separator,dry wind-magnetic separator,wind-gravity-magnetic combined force field magnetic separator and other typical types.Wind feeding dry magnetic separator mainly includes wind feeding plate magnetic separator,new dry wind-magnetic combined magnetic separator,dry wind permanent magnet concentrator,wind feeding dry permanent magnet magnetic separator and other types.The structure,magnetic separation principle,characteristics and application scope of more than 20kinds of dry magnetic separators are introduced,and the advantages and disadvantages of various dry magnetic separators are analyzed.

关 键 词：干式磁选 磁选机理 结构特点 细粉物料 

分 类 号：TD457[矿业工程—矿山机电]