铅锌矿尾矿制备陶粒处理选矿废水  

Production of ceramisite from lead-zinc tailings and its performance in treating mineral processing wastewater

作　　者：汪顺才[1] 袁荣灼[1] 余学勇[1] 毛超杰[1] 郭海红[1] 

机构地区：[1]河海大学环境学院,南京210098

出　　处：《环境工程学报》2013年第5期1779-1784,共6页Chinese Journal of Environmental Engineering

基　　金：中央高校基本科研业务费专项资金资助项目(2009B17914)

摘　　要：以铅锌矿浮选尾矿为原料,水玻璃和木质素作为添加剂,通过高温焙烧,制备水处理陶粒,并用其对选矿废水进行了吸附处理实验研究。实验结果表明,在不添加任何添加剂的条件下,800℃左右烧制的陶粒对选矿废水的COD吸附效果较好,COD去除率达到87.1%;当木质素+水玻璃作为粘结剂烧制陶粒时,不仅陶粒散落减少,COD的去除率和吸附容量都有所增加,COD去除率达到了88.21%,从而达到了"以废治废"的目的。This study investigated the possibility of using the lead-zinc railings as starting material to pre-pare lightweight ceramisite by a high temperature sintering process. Sodium silicate and lignin were introduced as additives to enhance the strength of ceramisite. The ceramisite was used to serve as a kind of adsorption material for mineral processing wastewater treatment, and its purification performance was examined. The results showed that the ceramisite fired at 800℃ can achieve high removal efficiencies for COD（ 87. 1% ） of miner-al wastewater without adding ingredients. When sodium silicate and lignin were added into ceramisite, not only the dregs of ceramic reduced, but also the removal efficiency of COD increased. Under these conditions the COD removal efficiency can be as high as 88.21% be achieved. As a result, the aim of waste control by waste can be achieved.

关 键 词：铅锌矿尾矿 陶粒 选矿废水 以废治废 

分 类 号：X753[环境科学与工程—环境工程]