新型磁选设备——磁选环柱的研制

磁选柱是一种电磁式脉动低弱磁场磁重联合的选矿设备，它可有效地剔除磁团聚中夹杂的单体脉石和连生体，从而获得高品位铁精矿。针对磁选柱在生产中存在的问题，开发研制了新型磁选设备——磁选环柱。实验室试验结果表明，该设备结构合理，原理独特，可以作为粗选设备使用抛弃合格尾矿，也可以作为精选设备使用获得高品位磁铁矿精矿。与磁选柱相比较，给矿粒度范围可拓宽到0．7—0咖，耗水量降低40％左右，经济技术指标良好。

Development of New Type Magnetic Separation Equipment-Annular Magnetic Separator

Column magnetic separator is low intensity magnetism-gravity combined low intensity pulsating electromagnetic separator. It can effectively reject the free gangue particles and intergrowths wrapped in the center of the agglomerates so as to obtain a high grade iron concentrate. In view of the problems existing in the column magnetic separator, a new type magnetic device--annular magnetic separator was developed. The laboratory test showed that this equipment that has rational structure and unique design principle can be used in scavenging to pre-discard qualified tailings and also in cleaning to obtain high grade magnetite concentrate. Compared with column magnetic separator, it can extend the feed size range to 0. 7 - 0 mm and reduce the water consumption by 40%, leading to both good technical and economical performances.