中文摘要：

以攀钢含钛高炉渣为研究对象，探讨了球磨活化对其物化性质以及酸浸过程的影响。SEN图显示，活化后，含钛高炉渣由未活化前的大块、不规则形破碎成了细柱状。激光粒度分析表明，球磨时间从0min增加到25min，含钛高炉渣粒度明显减小，中位粒径由279．95μm减小到4．32μm。酸浸实验发现，当浸出剂HCl浓度为3mol／L、搅拌转速300r／min、液固比30mL／g、浸出温度80℃、未活化矿样浸出90min后，钛在渣中的富集率只有57％，镁、铝、钙、硅的去除率分别为70％、68％、61％、49％；活化25min后，钛在渣中的富集率可以达到96％，镁、铝、钙、硅的去除率分别为85％、78％、70％、28％。XRD图谱表明，含钛高炉渣主要由钙钛矿、镁钙及铝钙复杂硅酸盐物相组成，活化后，矿样衍射峰变宽．强度减弱，有利于酸溶元素的浸出及钛的沉淀分离。

英文摘要：

Influence of mechanical activation on physieochemical properties and acid leaching process of Ti - bearing blast - furnace slag from Panzhihua I- ron and Steel Co. was investigated. SEM image revealed that the morphology of the unmilled titanium slag was irregular bulk broken into fine granular after activation. Laser particle analyzer demonstrated that the ball milling time increased from 0 rain to 25 min, the particle size of titanium - bearing blast fur- nace slag was significantly reduced, and the median particle diameter was reduced from 279.95 μm to 4. 32μm. Acid leaching indicated that when the concentration of hydrochloric acid 3mol/L, the stirring speed 300r/min, the liquid to solid ratio 30mL/g, the temperature 80℃, after 90 min, the enrich- ment ratio of titanium in slag was only 57 % for the unmilled sample, while reached to 96% for the 25 min milled sample, and the removal rates of magne- sium, aluminum, calcium, silicon were 70% ,68%, 61% ,49% for the unmilled sample, while 85% , 78% , 70% , 28% for the 25rain milled sample. The XRD analysis revealed that the main crystalline phases of the sample were CaTiO3 , Ca2Mg（ Si207 ） and Ca2Al（A1Si） 07 , and the diffraction peak of the ore sample developed wider and the intensity was weakened after activation, which was beneficial to the leaching of acid soluble element and the sepa- ration of titanium.