马耳岭选矿厂尾矿中磁铁矿再回收试验研究

摘要

本钢集团马耳岭选矿厂尾矿的TFe品位为8．87％，以硅酸铁、赤褐铁矿和磁铁矿三种矿物形式存在的铁含量分别为5．37％、1．30％、1．10％，磁铁矿为主要回收对象。经过系统试验研究，确定了强磁预富集抛尾-细磨-三次弱磁选的尾矿再选工艺，最终获得了精矿铁品位51．39％，磁性铁回收率81．89％的尾矿再选指标，为马耳岭选矿厂尾矿中磁性铁的回收提供了再选方案。%The grade of TFe in tailings of the Maerling dressing plant of Benxi steel group was 8.87%,and the content of iron silicate,hematite (limonite) and magnetite was 5.37%、1.30%and 1.10%respectively,and magnetite was the main mineral to be recovered .The flow of strong magnetic pre-enrichment tail -fine grinding -three stage weak magnetic separation was deter-mined through tests,the final grade of concentrate was 51.39%,and the recovery of magnetic iron was 81 .89%,providing a reprocessing method for the recovery of magnetic iron in the tailings of Maerling dressing plant .