【摘要】 采用机械力化学法活化低品位磷矿,考察了球料比20∶1、活化时间和活化方式对机械活化磷矿粉性能的影响.采用化学分析、XRD、SEM和粒度分析的方法证实机械活化磷矿粉结构的变化.结果表明:干磨条件下延长球磨时间至10 min,水溶性磷含量达9.4%,有效磷含量达61.6%,晶粒缺陷和无定型化是磷矿粉活性增加的根本原因.更多还原

【Abstract】 Low grade phosphorite is subjected to mechanochemical treatment,and the activation effects of ballto-powder ratio(20∶ 1),activation time and activation methods on property of phosphorite powder are investigated.Chemical analysis,XRD,SEM and particle size analysis were applied to prove changes in the structure of the mechanically activated phosphorite.The results show that,extending the ball milling time to 10 min under the condition of dry milling,the volume of water soluble P2O5 reachs 9.4% and assimilable P2O5reachs61.6%.The crystallite defects and amorphous structure are the fundamental reason for the increases in reactivity of the phosphorite powder.更多还原