新型湿式永磁磁选机的研制及对赤铁矿提铁试验.pdfVIP

第 39 卷 2011 年第 2 期 　 辑 编 目 栏 本 新型湿式永磁磁选机的研制及对 瑶 代 张 赤铁矿提铁试验研究 胡明振，彭会清 武汉理工大学资源与环境工程学院　湖北武汉　430070 摘要：新型湿式永磁磁选机的磁系采用稀土钕铁硼和优质铁氧体材料，磁系包角 138°，采用开放式 磁路设计，磁滚筒表面磁场可达 700 mT，比原来顺流型磁选机磁场强度提高 40% 以上。槽体内表面 选 · 分 及磁滚筒外表面粘有耐磨层增加耐磨性，入选矿石粒度直径可达 20 mm。通过提铁试验表明，本机运 行成本低，使用寿命长，处理量大。-0.074 mm 原矿在选别试验中，经过一次粗选的精矿品位可达到 52.37%，回收率可达到 86.3%，而尾矿则降到 36.57%，损失率为 13.7%，具有良好的经济效益和社会 价值。 关键词：湿式永磁磁选机；赤铁矿；提铁试验 中图分类号：TD457　　　文献标识码：A　　　文章编号：1001-3954(2011)02-0102-04 Development of a novel wet permanent magnetic separator and experimental study on fl otation of hematite HU Mingzhen, PENG Huiqing School of Resources Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China Abstract The magnetic system of a novel wet permanent magnetic separator is made of rare earth NdFeB and ： premium ferrite, the wrap angle of the magnetic system is 138¡ã, and the magnetic circuit is open. The maxi- mum magnetic induction on the surface of the magnetic cylinder is up to 700mT, compared with the sequential fl ow magnetic separator, it is increased by 40%. Anti-abrasion coatings are applied to the inner surface of the trough and the outer surface of the magnetic cylinder to increase wear resistance, which allows the size of gran- ules for magnetic fl otation up to 20mm. The experiments of hematite fl otation show that the separator operates with low cost, long lifespan and la