摘要：基于机械力活化方法及理论,研究机械力对金尾矿粒度及活性的影响，并通过用X射线衍射仪、电子扫描显微镜对其进行形貌观察和物相分析。结果表明:实验所选金尾矿易磨性较好，机械力对其粒度分布影响较大，颗粒尺寸在活化80 min时约为5 μm，达到最小值；其活性随着活化时间的增加有所提高，80 min时达到最大值，28 d抗压强度及活性指数分别为35. 33 MPa和78. 62%，之后会因弱团聚现象的出现而降低。

关键词：金尾矿；机械力；粒度；活性

Abstract: This paper studied the effect of mechanical force on the particle size and activity of gold tailings based on the mechanical force activation method and theory，the morphology and phase analysis of which were conducted with SEM and XRD respectively．The result shows that the gold tailings chosen are relatively easy to grind and the particle distribution is greatly affected by mechanical force with the minimum particle size of 5 μm in an activation time of 80 min; its activation property increases with the rise of the acting time，reaching its maximum at 80 min of action; the data of 28 d compressive strength and activity index of the test block mortar reach their peak of 35．33 MPa and 78．62% respectively at 80 min of action，then decrease with the occurrence of weak agglomeration．

Keywords: gold tailings; mechanical force; particle size; activation property