摘要
为开发利用山西某煤下高硫铝土矿,在矿石性质研究的基础上进行反浮选脱硫脱碳试验以达到除杂提质的目标。在磨矿细度为-0.074 mm含量为70.12%、浮选pH值为8.5的条件下,利用Design-Expert软件的Box-Behnken优化得到反浮选的最佳药剂制度为硫酸铜用量为27.48 g/t、丁基黄药用量为154.33 g/t、松醇油为45.11 g/t,在上述条件下实际试验所得产率为90.14%、硫含量为0.39%的铝精矿指标,与软件拟合所得方程的预测结果(产率为90.25%,硫含量为0.40%)基本吻合。原矿通过选取优化后条件进行“一粗一精三扫”的闭路浮选提质流程处理后,获得了产率为97.32%、S含量为0.32%、C含量为0.15%的铝精矿以及产率为2.68%、S含量为35.77%的硫精矿,实现了对煤下铝土矿的综合利用。
In order to develop and utilize a high-sulfur bauxite under coal in Shanxi Province,a reverse flotation desulfurization and decarburization test was carried out on the basis of ore properties study to achieve the goal of eliminating impurities and improving quality.Under the condition that the grinding fineness of-0.074 mm is 70.12%,and the flotation pH value is 8.5.The optimal reagent regime of reverse flotation optimized by the Box Behnken of Design-Expert software is 27.48 g/t copper sulfate,154.33 g/t butyl xanthoxanthate and 45.11 g/t terenol oil.Under the above conditions,the actual test yield is 90.14%.The aluminum concentrate with 0.39%sulfur content is basically consistent with the predicted result of fitting equation(yield of 90.25%,sulfur content of 0.40%).After the raw ore is treated by a locked-cycle flotation process of"one rough,one cleaning and three scavenging"after selecting the optimized conditions,an aluminum concentrate with yield of 97.32%,S content of 0.32%and C content of 0.15%and a sulfur concentrate with yield of 2.68%and S content of 35.77%are obtained,which realizes a comprehensive utilization of the under-coal bauxite.
作者
杜五星
张建强
马俊伟
魏兆斌
李莎莎
DU Wuxing;ZHANG Jianqiang;MA Junwei;WEI Zhaobin;LI Shasha(Zhengzhou Non-ferrous Metals Research Institute Co.Ltd.of CHALCO,Zhengzhou 450041,China;National Aluminum Smelting Engineering Technology Research Center,Zhengzhou 450041,China)
出处
《有色金属工程》
CAS
北大核心
2024年第1期83-91,共9页
Nonferrous Metals Engineering
基金
国家重点研发计划项目(2022YFC2904402)。
关键词
煤下铝土矿
浮选
交互作用
正交设计
响应曲面
bauxite under coal
flotation
interactive effect
orthogonal design
response surface methodology
