机械力活化对钼尾矿胶凝性能的影响研究  

The Influence of Mechanical Activation on the Cementing Property of Molybdenum Tailings

作　　者：刘璇[1] 李如燕[2] 崔孝炜[1] 梁卓卓 冷欣燕 LIU Xuan;LI Ruyan;CUI Xiaowei;LIANG Zhuozhuo;LENG Xinyan(Shang Luo University,Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,Shangluo 726000,China;Kunming University of Science and Technology,National Engineering Research Center of Solid Waste Resource Recovery,Kunming 650093,China)

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

出　　处：《矿产保护与利用》2018年第4期108-111,117,共5页Conservation and Utilization of Mineral Resources

基　　金：陕西省自然科学基础研究计划(2017JM5145);商洛学院挑战杯计划项目(18slcx091)

摘　　要：利用机械力对钼尾矿进行活化,并掺入矿渣、熟料和脱硫石膏制备胶凝材料,并通过XRD、SEM研究机械力活化对钼尾矿胶凝性能的影响。结果表明:机械力活化能够有效改变钼尾矿颗粒粒度分布,激发钼尾矿颗粒的水化反应活性。所制备净浆试块28 d的抗折强度和抗压强度分别可以达到10.1 MPa和63.21MPa,具有良好的胶凝活性。钼尾矿胶凝材料的水化产物主要是水化硅酸钙凝胶和钙矾石。胶凝材料中钼尾矿的总掺量达到70%,固体废弃物掺量达到87.5%,为固体废弃物的二次利用开拓了新思路。In the research,molybdenum tailings are activated through mechanical force.Then cementing materials are prepared with molybdenum tailings,clinker,gypsum and slag.The effect of mechanical activation on the property of molybdenum tailings is analyzed with XRD and SEM.The study indicates that mechanical activation can change the distribution of granularity in molybdenum tailings effectively.The 28 d-blocks prepared shows good activity,with a flexural strength and compressive strength of 10.1 MPa and 63.21 MPa respectively.The hydration products of it are mainly C-S-H gel and ettringite.The content of molybdenum tailings in the cementing materials takes 50%,and the content of solid waste 86.36%.The study provides reference for the recycling of molybdenum tailings.

关 键 词：钼尾矿 机械活化 胶凝材料 水化反应 

分 类 号：TD926.42[矿业工程—选矿]