山西中低品位铝土矿的石灰拜耳法溶出  

Digestion of Shanxi Diasporic Bauxite with Low and Medium Grade through Lime Bayer Process

作　　者：赵恒勤[1] 金梅[2] 王有和[2] 杨宇[1] 曾俊杰[1] 蔡淑霞[2] 

机构地区：[1]中南大学冶金科学与工程系,长沙410083 [2]中国地质科学院郑州矿产综合利用研究所,郑州450006

出　　处：《矿产保护与利用》2002年第2期41-44,共4页Conservation and Utilization of Mineral Resources

基　　金：国土资源部地质大调查项目 (编号 :DKD990 4 0 10 )

摘　　要：山西中低品位铝土矿的石灰拜耳法溶出工艺研究表明 ,采用铝土矿重量 16 %～ 18%的石灰加入到拜耳法溶出过程中 ,可以将赤泥的N/S降到 0 .3以下 ,A/S1.5以下 ,从而有助于氧化铝生产过程实现固体废渣的零排放。Diasporic bauxite from shanxi province in China was digested by lime bayer process and digestion conditions were determined. Research results indicated that when adopting lime bayer process for digesting diasporic bauxite, mass ratio of Na 2O/SiO 2 can be under 0.3, Al 2O 3/SiO 2 under 1.5 in red mud and this will contribute to realization of zero emission of red mud produced in the production of alumina.

关 键 词：中低品位铝土矿 石灰拜耳法 高压溶出 一水硬铝石 炼铝 

分 类 号：TF821[冶金工程—有色金属冶金]