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5μm,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。
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.
作者
刘璇
李如燕
崔孝炜
谢喆敏
李志刚
LIU Xuan;LI Ruyan;CUI Xiaowei;XIE Zhemin;LI Zhigang(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo 726000,China;National Engineering Research Center of Waste Resource Recovery,Kunming 650093,China)
出处
《中国粉体技术》
CAS
CSCD
2019年第2期42-46,共5页
China Powder Science and Technology
基金
陕西省自然科学基础研究计划项目
编号:2017JM5145
国家级大学生创新创业训练计划项目
编号:201811396020
陕西省尾矿资源综合利用重点实验室开放基金
编号:2017SKY-WK009
关键词
金尾矿
机械力
粒度
活性
gold tailings
mechanical force
particle size
activation property
