西北某高硫铝土矿浮选脱硫试验研究  

Study on the Flotation Desulfurization of High-sulfur Bauxite in Northwest

作　　者：李振宇[1] Li Zhenyu(Northwest Institute of Mining and Metallurgy,Baiyin,Gansu,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900

出　　处：《矿产综合利用》2020年第6期127-130,共4页Multipurpose Utilization of Mineral Resources

摘　　要：本文针对西北某高硫细粒级嵌布铝土矿,进行了浮选脱硫试验,试验研究结果表明,原矿磨至-0.074 mm 90%,在pH值为8.4、捕收剂丁基黄药和Z-200用量分别为300 g/t和100 g/t的条件下,经一粗两精两扫流程闭路浮选,可获得硫含量0.38%的铝土矿精矿,脱硫率为95.01%,铝土矿回收率为91.06%的选矿指标。浮选脱硫工艺后获得的含硫0.38%的铝土矿精矿,满足氧化铝拜耳法含硫不高于0.4%的要求,同时硫精矿可作为生产硫酸的原材料,整个浮选脱硫工艺尾矿零排放,实现了矿产资源的高效综合利用。In this paper,flotation desulfurization experiments were carried out for a high-sulfur fine-grained embedded bauxite in Gansu Province.The test results show that bauxite concentrate with sulfur content of 0.38%can be obtained by closed-circuit flotation with grinding to-0.074 mm 90%,pH value of 8.4,dosage of collector butyl xanthate and Z-200 at 300 g/t and 100 g/t,respectively.The desulfurization rate is 95.01%,bauxite concentrate with sulfur content of 0.38%,and beneficiation index of 91.06%recovery of bauxite.The bauxite concentrate with sulfur content of 0.38%obtained by flotation desulfurization process meets the requirement that sulfur content in Bayer process of alumina is not higher than 0.4%.At the same time,sulfur concentrate can be used as raw material for sulfuric acid production.The tailings of the whole flotation desulfurization process are zero-emission,thus realizing the efficient and comprehensive utilization of mineral resources.

关 键 词：高硫铝土矿 反浮选脱硫 组合捕收剂 

分 类 号：TD952.5[矿业工程—选矿] TD923