铁坑褐铁矿全磁流程试验研究

摘要

The Tiekeng limonite has a low iron grade and a high content of S1O2 > and is currently processed with magnetic separation-flotation flowsheet, with a high operating cost and low iron recovery. There would be a high production cost and a low iron recovery when using magnetic separation-flotation process to separate this ore. A primary grinding and magnetic separation-fine grinding and reconcentration process was tested to process the limonite with SLon high gradient magnetic separator, and an iron concentrate assaying 53. 16% with 64. 91% recovery was achieved,at a low SiO2 content of 8. 13%.%铁坑褐铁矿品位低,SiO2含量高,现生产采用磁选浮选流程,其生产成本较高,回收率低.采用SLon高梯度强磁选机,对该矿进行粗磨抛尾-再磨再选的全磁流程试验,获得了品位53.16％、回收率64.91％和SiO2含量8.13％的铁精矿.