某拜尔法赤泥选铁尾矿工艺矿物学研究

详细研究了某拜尔法赤泥选铁尾矿的物质组成、粒度组成等，重点研究了铝、钛、稀土、钪、镓等有价元素在该赤泥选铁尾矿中的赋存状态。结果表明：46.08%的Al2O3以一水硬铝石和三水铝石的矿物形式存在，并且这部分铝矿物90%以上粒度大于0.005 mm，可采用浮选方法回收；而Ti、稀土元素、Sc和Ga由于分布粒级微细，需采用湿法冶金方法提取。研究结果为该赤泥选铁尾矿的综合利用提供了翔实的资料和理论依据。

Process Mineralogy of Tailings of Separating Iron from Red Mud of Bayer Process

The material and size composition of tailings of separating Fe from red mud of bayer process was detailedly studied, focusing on the occurrence of the valuable metals such as Al, Ti, REE, Sc, Ga, etc.The results show that 46.08% of Al2O3 exists in the form of diasporite and gibbsite minerals and more than 90% of the minerals are larger than 0.005 mm which can be recovered by floatation.The Ti, REE, Sc and Ga should be extracted by hydrometallurgy for their micro-fine dissemination size.This study provides detailed data and theoretical basis for the comprehensive utilization of the tailings of separating Fe from red mud of bayer process.