从黑山选钛厂强磁尾矿中选钛的试验研究

Test on Recovery of Titanium for Tailings of High Intensity Magnetic Separation of Heishan Titanium Concentrator

承钢黑山选钛厂二段强磁尾矿中尚含有一定量的钛铁矿。为减少资源浪费.进行了从该尾矿中回收钛的选矿试验研究。结果表明,采用螺旋溜槽粗选—摇床精选单一重选流程,可得到TiO_2品位为32.12%、TiO_2回收率为38.02%粗钛精矿,该产品可作为钢铁厂护炉原料销售;采用螺旋溜槽粗选—摇床精选—硫浮选—钛浮选联合流程.可得到TiO_2品位在47%左右的合格钛精矿,同时可获得S品位在39%以上的的硫精矿副产品。

There is still some ilmenite in the tailing of the secondary high intensity magnetic separation in Hcshan Titanium Concentrator, Cheng Steel. To reduce the resource waste, test is made on the titanium recovery from this tailing. The results show that a rough concentrate with a TiO2 grade of 32.12% and TiO2 recovery of 38.02% can be obtained by adopting a single gravity separation process consisting of roughing by spiral sluice and cleaning by tabling, which can be sold as blast furnace burden. The combined flowsheet consisting of roughing by spiral sluice, cleaning by tabling, sulphur flotation and titanium flotation can obtain a qualified titanium concentrate with a TiO2 grade of 47% and meantime a sulphur concentrate as a byproduct that has S grade of above 39%.