赤泥中有价金属提取与综合利用进展

来源期刊：中国有色金属学报2018年第8期

论文作者：王璐 郝彦忠 郝增发

文章页码：1697 - 1711

关键词：赤泥；整体利用；金属回收；有价金属；稀土

Key words：red mud; overall utilization; metal recovery; valuable metal; rare earth

摘    要：赤泥是铝土矿提取氧化铝过程中产生的固体粉状废弃物，属强碱废渣，大量堆积对环境造成严重污染。赤泥除可作为原料整体加以利用外，本身还含有多种有价金属，因此综合利用赤泥有着重要的现实意义。综述了从拜耳法赤泥中提取铝、铁、钛、钪等有价金属的研究现状及存在的问题，同时对赤泥综合利用的发展方向进行了展望。

Abstract: Red mud is the solid powder waste generated in the process of alumina extraction by bauxite and a strong alkali residue. Mass accumulation of the red mud causes serious pollution to the environment. Red mud not only can be used as raw material as a whole, but also contains a variety of valuable metal elements. Therefore, the comprehensive utilization of red mud has important practical significance. The research status and existing problems of extraction of valuable metal elements such as Al, Fe, Ti and Sc from Bayer red mud were reviewed. At the same time, the development direction of red mud comprehensive utilization was prospected.