高硫铝土矿浮选尾矿制备聚合硫酸铝铁絮凝剂试验研究  

Preparation of Polymeric Aluminum Ferric Sulfate Flocculant Using High-sulfur Bauxite Flotation Tailings

作　　者：李帅 刘万超 康泽双 闫琨 练以诚 杨洪山 LI Shuai;LIU Wanchao;KANG Zeshuang;YAN Kun;LIAN Yicheng;YANG Hongshan(Zhengzhou Non-ferrous Metal Research Institute Co.,Ltd.of CHALCO,Zhengzhou 450041,China;China National Engineering Research Central for Aluminum Metallurgy,Zhengzhou 450041,China;Chinalco Environmental Protection and Energy Conservation Group Co.,Ltd.,Beijing 101300,China)

机构地区：[1]中铝郑州有色金属研究院有限公司,河南郑州450041 [2]国家铝冶炼工程技术研究中心,河南郑州450041 [3]中铝环保节能集团有限公司,北京101300

出　　处：《湿法冶金》2020年第5期419-423,共5页Hydrometallurgy of China

基　　金：国家重点研发计划项目(2017YFC0703105);中铝股份自主研发项目(ZZ2018080)。

摘　　要：研究了以铝工业废渣高硫铝土矿浮选尾矿和赤泥为原料,采用焙烧—酸浸—聚合工艺制备聚合硫酸铝铁絮凝剂,考察了酸浸温度、酸浸时间、酸浓度、液固体积质量比对铝、铁浸出率的影响,并对制备的絮凝剂进行表征和水处理试验。结果表明:适宜条件下,铁、铝浸出率分别为93.44%和41.18%;所制备的絮凝剂除对COD去除性能略低外,其他性能与市售同类产品相当。Preparation of polymeric aluminum ferric sulfate flocculant using aluminum industrial residue high-sulfur bauxite flotation tailings and red mud by roasting—acidic leaching—polymerization process was investigated.The effects of acidic leaching temperature,leaching time,acid concentration and liquid volume-to-solid mass ratio on the leaching rate of aluminum and iron were examined.The flocculant performance was characterized and water treatment experiments were carried out using the flocculant.The results show that under the optimum conditions,the leaching rate of Fe and Al is 93.44%and 41.18%,respectively.Except removal for wastewater COD is slightly lower,other properties of the flocculant are similar to those of the similar products on market.

关 键 词：铝土矿 尾矿 酸浸 聚合硫酸铝铁 絮凝剂 制备 

分 类 号：X703[环境科学与工程—环境工程] TF123[冶金工程—粉末冶金]