高掺量钼尾矿制备超轻水泥基泡沫保温板试验研究  

Experimental Study on Ultra-light Cement-based Foam Insulation Board Prepared with High Content of Molybdenum Tailings

作　　者：邓军平[1] 张晓涵 DENG Junping;ZHANG Xiaohan(College of Materials Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学材料科学与工程学院,西安710054

出　　处：《材料导报》2021年第S01期288-290,共3页Materials Reports

基　　金：国家重点研发计划子课题(2017YFC0703204-1)。

摘　　要：钼尾矿为我国战略新兴资源钼矿业产生的固体废渣,亟需开发和利用。通过机械活化和化学活化对钼尾矿进行处理,加入一定量的硅酸盐水泥制备了钼尾矿粉水泥。利用化学发泡工艺制备了50%钼尾矿粉水泥基保温板,按照国家相关标准测试了保温板的表观密度、导热系数、抗压强度等性能参数,优化了高掺量钼尾矿水泥基保温板的工艺参数。研究结果表明:复合掺加2%的发泡聚苯乙烯(EPS)颗粒和8%的过氧化氢(30%溶液)可以获得表观密度为180 kg/m^(3)、抗压强度为0.28 MPa、导热系数为0.050 W/(m·℃)的水泥基泡沫保温板,基本达到了JC/T2200-2013要求,为高附加值利用钼尾矿提供了一条可行的技术途径。Molybdenum tailings are the solid waste produced by molybdenum mining industry, which is a strategic emerging resource in Chinaand urgently needs development and utilization. Molybdenum tailings were treated by mechanical activation and chemical activation, and a certain amount of Portland cement was added to prepare molybdenum tailings powder cement. The 50% molybdenum tailings powder cement-based insulation board was prepared by the chemical foaming process. In accordance with relevant national standards, the apparent density, thermal conductivity, compressive strength and other performance parameters of the insulation board were tested, and the process parameters of the cement-based insulation board with high content of molybdenum tailings were optimized. The results show that: the compound doping with 2% expanded polystyrene (EPS) particles and 8% hydrogen peroxide (30% solution) can obtain an apparent density of 180 kg/m^(3), a compressive strength of 0.28 MPa, and thermal conductivity of 0.050 W/(m·℃), which basically meets the requirements of JC/T2200-2013, and provides a feasible technical way for the utilization of molybdenum tailings with high added value.

关 键 词：钼尾矿 化学发泡工艺 水泥基泡沫保温板 

分 类 号：TU551.3[建筑科学—建筑技术科学]