宣钢龙烟鲕状赤铁矿强磁-反浮选试验研究

Test Research on HIMS-Reverse Flotation of Oolitic Hematite of Longyan Iron Mine,Xuan Steel

为更好地开发利用张家口地区的鲕状赤铁矿资源,采用阶段磨选的强磁—反浮选工艺流程,对该地区有代表性的宣钢龙烟铁矿鲕状赤铁矿石进行了选矿试验。试验结果表明,以SLon脉动高梯度磁选机为强磁选设备,以NaOH、淀粉、CaO和TS为反浮选药剂,在一段为-200目65%、二段为-200目95%的磨矿细度下,经过2次强磁选和一粗一精反浮选,可以获得较好的分选指标,精矿铁品位为62.34%、铁回收率为53.07%。

In order to better exploit and utilize the oolitic hematite ore resource in Zhangjiakou region, staged grinding-separation process consisting of high intensity magnetic separation （HIMS） and reverse floatation was adopted in the beneficiation test on the regionally representative oolitic hematite ore of Longyan Iron Mine, Xuan Steel. The test results indicate that, with Slong pulsating high gradient magnetic separation as HIMS equipment, with NaOH, starch, CaO and TS as flotation reagents, and at a grind of 65% -200 mesh for the primary grinding and 95% -200 mesh for the secondary grinding, an iron concentrate grading 62.34% and having an iron recovery of 53.07% can be achieved after two stage HIMS and one roughing-one cleaning reverse flotation.