贵州某高硅铝土矿焙烧预处理试验研究  

Experimental Study on Pretreatment of a High Silica Bauxite in Guizhou

作　　者：罗宇智[1] 史光大[1] 李元坤[1] 钟庆文[1] 余平[1] 

机构地区：[1]中国地质科学院矿产综合利用研究所,四川成都610041

出　　处：《湖南有色金属》2013年第3期33-35,43,共4页Hunan Nonferrous Metals

基　　金：国土资源部地质大调查项目:贵州高硫高硅中低品位铝土矿脱硅提铝技术研究(1212011120320)

摘　　要：以贵州某高硅铝土矿为研究对象,开展了焙烧-预脱硅试验研究,确定了焙烧预脱硅工艺的最佳条件。在最佳条件下,SiO2的液计脱除率为80.11%,渣计为78.06%,矿物中大部分的硅被除去。预脱硅后矿物铝硅比(A/S)达23.53,预脱硅效果好,满足拜耳法生产氧化铝要求。The optimum conditions of calcination pre-desilication process, which targeted to a high silica bauxite in Guizhou, is determined through the research on pretreatment crafts of the bauxite ore. Under the optimum conditions, the removal efficiency of the SiO2 by liquid and slag metering is 80. 11% and 78.06% , respectively. Additionally, the A1-Si ratio of the pre-desilication products is 23.53, indicating a good pre-desilication effect. Silicon in the ore can be mostly removed by the roasting-pre-desilication method on bauxite.

关 键 词：铝土矿 焙烧 预脱硅 

分 类 号：TF831[冶金工程—有色金属冶金]