细粒全尾矿絮凝沉降特性研究  

Research on flocculation sedimentation characteristics of fine unclassified-tailings

作　　者：王勇[1] 王洪江[1] 吴爱祥[1] 李辉[1] 刘洪钧[1,2] 谷志君[1,3] 

机构地区：[1]北京科技大学土木与环境工程学院 [2]中国黄金集团内蒙古乌山铜钼矿 [3]中国黄金集团公司

出　　处：《黄金》2012年第1期48-51,共4页Gold

基　　金：国家自然科学基金资助项目(50934002;51104011;51074013);长江学者和创新团队发展计划项目(TRT0950)

摘　　要：细粒全尾矿沉降速度慢、脱水困难,影响到膏体制备;该类尾矿必须借助絮凝剂改善沉降特性。根据某矿山尾矿物理特性,从7种阴离子聚丙烯酰胺絮凝剂中选出1种沉降速度最快的絮凝剂N123,并使用N123进行了室内沉降试验。采用均匀设计法建立了3因素5水平试验方案,回归不同水平沉降速度和极限沉降浓度方程,得到最佳因素组合。最后,探索了矿浆停留时间对絮凝效果的影响。Fine unclassified-tailings have slow settling speed and it＇s difficult for de-watering, which affects the paste preparation. Therefore, it is needed to use floeculant to improve the settlement characteristics of this kind of railings. According to a mine＇s tailings physical properties ,the flocculant N123 which has the quickest settlement speed is selected from 7 kinds of anionic polyacrylamide flocculants, and its indoor settlement experiments are carried out. The 3 factors 5 levels tests are established by uniform design method, and the different-level settling velocities and limiting concentration equations are regressed. Finally, we get the best combinations of factors. The effects of mortar retention time on flocculation are investigated.

关 键 词：细粒全尾矿 絮凝剂 均匀设计法 沉降速度 极限沉降浓度 

分 类 号：TD926.41[矿业工程—选矿]