机械力对菱铁尾矿粒度分布及火山灰活性的影响

基于机械力活化方法及理论，研究了机械力对菱铁尾矿的粒度分布及火山灰活性的影响。结果表明:试验所用菱铁尾矿的易磨性相对较好，机械力的作用使尾矿的粒度分布变化明显且活化后的尾矿具有一定的火山灰活性，但活化时间过长会因弱团聚现象的出现而导致活性降低，方差分析结果表明球磨转速和粉磨时长均对尾矿的比表面积和火山灰活性有显著影响，其中球磨转速的影响相对更大。 

Effect of Mechanical Force on Distribution of Particle Size and Pozzolanic Reactivity of Siderite Tailings

Based on mechanical force activation method and theory, the effects of mechanical force on distribution of particle size and pozzolanic reactivity of siderite tailings were studied. The results showed that the tailings were relatively easy to grind, the role of mechanical force was making the tailings particles distribution change significantly and leading to activation of tailings with a certain pozzolanic reactivity. However, the long time will result in the phenomenon that weak reunion was reduced. And the activity of variance analysis results showed that the ball grinding speed and grinding length had a significant impact on the specific surface of the tailings and pozzolanic reactivity, and among them, the influence of ball mill speed was better to the grinding time.