机械力对高硅钒尾矿活化性能的影响  

Effect of Mechanical Force on Activation Properties of High Silicon Vanadium Tailings

作　　者：刘璇[1] 李如燕[2] 崔孝炜[1] 谢喆敏 南宁[1] LIU Xuan;LI Ru-yan;CUI Xiao-wei;XIE Zhe-min;NAN Ning(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources(Shangluo University),Shangluo 726000,China;National Engineering Research Center of Solid Waste Resource Recovery,Kunming 650093,China)

机构地区：[1]陕西省尾矿资源综合利用重点实验室(商洛学院),商洛726000 [2]固体废弃物资源化国家工程研究中心,昆明650093

出　　处：《硅酸盐通报》2019年第8期2662-2667,共6页Bulletin of the Chinese Ceramic Society

基　　金：陕西省自然科学基础研究计划(2017JM5145);国家大学生创新创业训练计划(201811396020);商洛市科技计划(SK2018-03-02);陕西省尾矿资源综合利用重点实验室开放基金(2017SKY-WK009);商洛学院科学研究项目(15SKY004)

摘　　要：基于机械力活化方法及理论,分析了钒尾矿活化性能的影响因素,并用SEM、XRD、FT-IR进行了表征。结果表明:所选尾矿易磨性相对较好,其矿物组成不会因机械力作用而改变,但颗粒分布受机械力作用影响较大,最佳活化时间为60 min,此时80%的钒尾矿颗粒粒径小于100μm;其活化性能随机械力的作用时间的增加有所提高,但时间过长又会因弱团聚现象的出现而降低,60 min时,掺30%钒尾矿砂浆试块的28 d抗压强度为28.55 MPa,达到最高。The factors affecting the activation performance of vanadium tailings were analyzed and tested by SEM,XRD and FT-IR based on mechanical activation method and theory.The results show that the tailings are relatively easy to grind,and the mineral composition is not changed by mechanical force,but the particle distribution is greatly affected by mechanical force with an optimal activation time of 60 min.At this point,80%of vanadium tailings particles have a particle diameter less than 100μm.Activation properties increase with the rise of the acting time of mechanical force,but decrease with the occurrence of weak agglomeration after a longer time of action.At 60 min of action,the 28 d compressive strength of the test block with 30%vanadium tailings mortar reaches its peak of 28.55 MPa.

关 键 词：钒尾矿 机械力 活化性能 活性指数 

分 类 号：TD982[矿业工程—选矿]