钛砂矿选矿厂尾矿中细粒级钛铁矿浮选回收试验研究

Research on flotation recovery of fine ilmenite from tailings of titanium placer concentrator

通过高效捕收剂FA-01对某钛砂矿选厂尾矿中的细粒级钛铁矿进行了浮选回收试验。结果表明,采用"弱磁—强磁"预先抛尾、强磁精矿细磨后浮选回收工艺流程,可实现对钛砂矿选厂尾矿中细粒级钛铁矿资源的有效回收,其中预先抛尾工艺抛尾率达到66.58%,TiO2损失率为18.71%,可有效去除影响浮选效果的高岭石等细泥矿物。浮选工艺在弱碱性矿浆体系下,闭路试验可得到TiO2品位43.28%、回收率为54.63%的钛精矿。

In this paper,the flotation recovery of fine-grained ilmenite from tailings of a titanium placer concentrator was carried out by using high-efficiency collector FA-01.The technology of"low intensity magnetic separation-high intensity magnetic"prediscarding tail and fine grinding of strong magnetic concentrate followed by floatation is adopted to realize the effective recovery of ilmenite resources in tailings of titanium placer concentrator.In the prediscarding tail section,the throwing rate is 66.58% and the loss rate of TiO2 is only18.71%,which can effectively remove kaolin and other slime minerals that affect the flotation effect.In the flotation process section,the titanium concentrate with TiO2 grade of 43.28% and recovery of 54.63% can be obtained by the closed-circuit test under the weak alkaline pulp system.