铅锌尾矿免蒸免烧砖的制备及性能  

Study on the Preparation and Performance of Lead-Zinc Mine Steam-free and Burn-free Brick

作　　者：周龙 周素莲 马华菊 Zhou Long;Zhou Sulian;Ma Huaju(Guilin University of Technology at Nanning,Nanning,Guangxi,China)

机构地区：[1]桂林理工大学南宁分校,广西南宁530001

出　　处：《矿产综合利用》2022年第3期12-16,共5页Multipurpose Utilization of Mineral Resources

基　　金：广西科技基地与人才专项(桂科AD17129007)。

摘　　要：以铅锌尾矿为主要原料,掺入石膏、石粉、水泥制备免烧砖,考察了各组分含量和用水量对免烧砖性能影响。结果显示,较佳成型水分为14%,成型压力为20 MPa,尾矿∶石膏∶水泥∶石粉=2.5∶1.5∶1∶5时,制备的免烧砖满足《非烧结垃圾尾矿砖》MU25级别要求,固废使用量达到25%,实现了固体废弃物的资源化。Using tailings,gypsum,cement and stone powder to prepare the no-fire brick,the mechanical properties are discussed by change of the proportion of tailings、gypsum、cement and stone powder,and the dosage of the water.The results show that the best preparation condition is that the proportion of tailings、gypsum、cement and stone powder being 2.5∶1.5∶1∶5,the water consumption accounting for 14%of the total solid materials.The prepared non-fired bricks can meet the standard requirements of iron tailings,the use of solid waste reached 25%,realizing the recycling of solid waste.

关 键 词：组分比例 用水量 免烧砖 抗压强度 吸水率 

分 类 号：TD982[矿业工程—选矿]