铝矾土尾矿基陶瓷透水砖的制备及其性能研究  

Research on Preparation and Performance of Bauxite Tailings-based Ceramic Permeable Brick

作　　者：邢益强 吴晓鹏 潘孟博 詹学武 王斌 杜浩然 戚文豪 赵飞 马成良 XING Yiqiang;WU Xiaopeng;PAN Mengbo;ZHAN Xuewu;WANG Bin;DU Haoran;QI Wenhao;ZHAO Fei;MA Chengliang(Henan Key Laboratory of High Temperature Functional Ceramics,School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450052,China)

机构地区：[1]郑州大学材料科学与工程学院,河南省高温功能材料重点实验室,郑州450052

出　　处：《中国陶瓷》2021年第2期46-54,共9页China Ceramics

基　　金：国家自然科学基金(51472220,51872265)。

摘　　要：利用尾矿和工业固废采用“两步煅烧法”制备生态陶瓷透水砖。结果表明:以铝矾土尾矿为主要原料,破碎球磨后造粒并煅烧制备高强骨料,加入适量高温粘结剂。在铝矾土尾矿为85 wt%、花岗岩废料8 wt%、氟化钙污泥3 wt%、成型压力10 MPa、烧成温度1140℃、保温时间2 h条件下制备透水砖。其体积密度为1.95 g/cm^(3)、吸水率14.30%、透水系数13.2×10^(-2) cm/s、抗压强度40.4 MPa。符合JC/T945-2005行业标准,可作为“海绵城市”路面铺装材料,为尾矿和工业固废资源化利用提供了新的途径。In this paper,tailings and industrial solid waste are used to prepare ecological ceramic permeable bricks by the "two-step calcination method".The results show that using bauxite tailings as the main raw material,crushing and ball milling,pelletizing and calcining to prepare high-strength aggregates,adding an appropriate amount of high-temperature binder,the permeable brick is prepared under the conditions of bauxite tailings content is 85wt%,granite waste is 8wt%,calcium fluoride sludge is 3 wt%,molding pressure is 10 MPa,firing temperature is 1140℃,and holding time is 2 h.Its bulk density is 1.95 g/cm^(3),water absorption rate is 14.30%,water permeability coefficient is 13.2×10^(-2) cm/s,compressive strength is 40.4 MPa,which complies with JC/T945-2005 industry standard and can be used as a pavement material for "sponge city".This provides a new way for the resource utilization of tailings and industrial solid waste.

关 键 词：铝矾土尾矿 陶瓷透水砖 抗压强度 透水系数 

分 类 号：TQ174.76[化学工程—陶瓷工业]