改性高钛高炉渣的浮选性能

Flotation of the modified high titanium BF slag

以攀钢高炉渣为原料,采用"选择性分离与长大"的方法使高炉渣中的钛富集于钙钛矿中,然后在常温25℃,pH值9.3下,研究捕收剂油酸、捕收剂A与抑制剂水玻璃、CMC的用量对改性高炉渣中钙钛矿浮选性能的影响.实验结果表明:捕收剂油酸和捕收剂A都能用于改性渣的浮选,但是捕收剂A浮选性能更佳;抑制剂水玻璃和CMC都能抑制脉石,但是水玻璃也抑制钙钛矿浮选,所以CMC更适用于改性高炉渣的浮选.本实验优化出最佳浮选工艺,即为捕收剂A用量600 g/t,CMC用量为1 500 g/t时,浮选效果最为理想.此选冶结合的绿色分离技术适宜于攀钢含钛高炉渣的综合处理.

In this paper,the titanium in blast furnace slag was concentrated into perovskite phase by selective precipitation and growing up,then the flotation performance was researched by investigating the amount of collector oil acid,collector A,inhibitor sodium silicate and CMC in normal temperature（25 ℃） and normal pH（9.3）.The experimental results show that both collector oil acid and collector A could be used for the flotation of modified blast slag,but flotation performance of collector A was better;both inhibitor sodium silicate and CMC could inhibit the gangue,but sodium silicate could also inhibit perovskite,therefore CMC was more suitable for the flotation of the modified blast slag.The optimized flotation process is the amount of collector A was 600 g/t and CMC was 1 500 g/t,which can get an ideal flotation effect.This green separation technology is suitable for the comprehensive treatment to Pangang blast furnace slags.