豫西低品位高硫铝土矿脱硫脱硅工艺技术研究  

Research on desulfurization and desilication technology of low-grade high-sulfur bauxite in western Henan

作　　者：张建强 杜五星 马俊伟 魏兆斌 Zhang Jianqiang;Du Wuxing;Ma Junwei;Wei Zhaobin(Zhengzhou Non-ferrous Metals Research Institute Co.,Ltd.of CHALCO,Zhengzhou 450041,China;National Aluminum Smelting Engineering Technology Research Center,Zhengzhou 450041,China)

机构地区：[1]中铝郑州有色金属研究院有限公司,河南郑州450041 [2]国家铝冶炼工程技术研究中心,河南郑州450041

出　　处：《轻金属》2021年第10期8-13,共6页Light Metals

基　　金：国家科技支撑计划(2015BAB04B00)和(2020YFC1908802)。

摘　　要：针对豫西低品位高硫铝土矿单独脱硫后精矿A/S低,单独脱硅后精矿硫含量高的问题,研究开发了低品位高硫铝土矿脱硫脱硅技术。Al_(2)O_(3)含量为58.09%,A/S为4.43,S含量为1.21%的豫西低品位高硫铝土矿,经“一次粗选一次精选两次扫选”浮选脱硫,脱硫铝精矿经“一次粗选两次精选一次扫选”浮选脱硅处理后,可得到产率为76.55%,S含量为0.15%,Al_(2)O_(3)含量为65.25%,A/S为9.02的铝精矿以及S含量为23.27%,产率为4.60%的硫精矿,实现了低品位高硫铝土矿的有效利用,为经济高效利用低品位高硫铝土矿提供了技术支撑。With respect to the problems of low A/S in concentrate after separate desulfurization and high-sulfur content in concentrate after separate desilication for the low-grade high-sulfur bauxite in western Henan,the desulfurization and desilication technology for low-grade high-sulfur bauxite is researched and developed in this paper.As for the low-grade high-sulfur bauxite in western Henan with 1.21%S content,58.09% Al_(2)O_(3) content and 4.43 A/S,by means of the“primary roughing-primary beneficiation-secondary scavenging”flotation desulfurization,and after the flotation desilication treatment of desulfurized aluminum concentrate through“primary roughing-secondary beneficiation-primary scavenging”,the aluminum concentrate can be obtained with 76.55%yield,0.15%S content,65.25% Al_(2)O_(3) content and 9.02 A/S,meanwhile,the sulphur concentrate can be obtained with 23.27%S content and 4.60%yield.The effective utilization of low-grade high-sulfur bauxite is achieved,which provides technical support for the economic and efficient utilization of low-grade high-sulfur bauxite.

关 键 词：低品位 高硫铝土矿 脱硫脱硅 经济高效利用 

分 类 号：TF801.3[冶金工程—有色金属冶金]