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.
出处
《黄金》
CAS
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)
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
fine unclassified-tailings
flocculant
uniform design
settling velocity
limiting concentration
