含钛渣中黑钛石相的重选分离试验研究

Research on Gravity Separation of Anosovite from Ti-bearing Slag

主要通过螺旋溜槽重力选矿的方法来分离含钛渣中的黑钛石相,由此实现钛组分的选择性分离,为钛资源的综合利用奠定基础。将含钛渣磨细至不同的粒度上限,并测定渣中黑钛石相的单体解离度,根据统计结果可知,当含钛渣的磨矿粒度上限为74μm和50μm时,黑钛石相单体解离较为充分,其单体解离度分别为77.76%和82.18%。通过重选试验获得了一组最优的重选参数,即当控制精矿截取位置为距离溜槽内侧边缘3cm,溜选圈数为5圈,给矿浓度为35%时,重选所获得的精矿TiO2品位为67.19%,TiO2的回收率为61.62%,黑钛石相的回收率为68.74%。

In this paper,the method of gravity separation by spiral chute was used to separate the anosovite phase from titanium-bearing slag,thereby realizing the selective separation of titanium components and laying the foundation for comprehensive utilization of the titanium resources.The titanium-bearing slag was ground to different particle size limits,and the monomer dissociation degree of anosovite phase was determined.According to the statistical results,when the upper limit of the particle size of titanium-bearing slag was 74 μm and 50 μm,the monomer disassociation degree of anosovite phase was relatively high,which was 77.76% and 82.18% respectively. A set of optimal gravity-separation experimental parameters was obtained through gravity separation.When the position of the wedge-shaped block was controlled at 3 cm from the inner edge of the chute,the number of chute laps was 5 and the ore concentration was determined at 35%,consequently,the grade of TiO2 in the concentrate reached 67. 19%,the recovery rate of TiO2 was 61.62% and the recovery rate of anosovite was 68.74%.