絮凝剂在选矿拜耳法氧化铝生产中的应用综述  

Application research on flocculant for Dressing-Bayer process of alumina production

作　　者：陈湘清[1,2] 姚国新[1] 熊道陵[1] 郑慧慧[1] 陈金洲 杨金鑫[1] 李素敏[2] 

机构地区：[1]江西理工大学冶金与化学工程学院,江西赣州341000 [2]中国铝业股份有限公司郑州研究院,河南郑州450041

出　　处：《轻金属》2014年第10期21-26,共6页Light Metals

基　　金：国家自然科学基金资助项目(51364014);江西省科技厅科技资助项目(20133BBG70003);江西省教育厅科技资助项目(GJJ11458;GJJ11476;GJJ10157)资助

摘　　要：选矿—拜耳法是针对我国低品位难处理一水硬铝石型铝土矿的一种高效生产手段,它的提出对我国氧化铝的生产具有重要意义。沉降分离是影响选矿—拜耳法生产氧化铝效益及其产品品质的一个重大难题,选矿—拜耳法流程中的沉降分离工序包括洗矿尾矿沉降、浮选精尾矿沉降以及赤泥沉降,添加絮凝剂是目前普遍采用并行之有效的沉降分离方法。本文论述了絮凝剂的种类、性质、作用机理及其在选矿—拜耳法工序中各沉降环节中的应用,结合各环节矿浆及矿物的性质分析,对不同矿浆絮凝剂的选型问题进行了论述。针对不同类型的矿浆选择合适的絮凝剂,已成为选矿工作者的重点之一。Dressing - Bayer process of alumina production is an efficient means of production that aimed at the difficult low grade diaspore bauxite, which is very important to the alumina production in our country. Settlement separation is a major problem which has an influence on the efficiency and product quality of Dressing - Bayer process of alumina production. Settlement separation procedures of Dressing - Bayer process include washing tailing settlement of sedimentation, flotation tailings and red mud settling, adding flocculant is an effective settlement separation method which has been used widely nowadays. This paper introduce the kinds, properties, mechanisms of flocculant and its application in every settlement separation procedures of Dressing - Bayer process, and make a comment on flocculant selection for different slurries with the properties analysis about each slurry and mineral. Choosing an ap- propriate flocculant about different kinds of slurries has become one of emphases of the research of dressing workers.

关 键 词：选矿-拜耳法 氧化铝 铝土矿 絮凝剂 

分 类 号：TQ133.1[化学工程—无机化工] TD923.3[矿业工程—选矿]