一种干式回收细粒铝土矿的选矿工艺研究  

Research on Beneficiation Technology for Dry Recovery of Fine Grained Bauxite

作　　者：韦权锋 陆仕勇 杨文 WEI Quanfeng;LU Shiyong;YANG Wen(Guangxi Tiangong Metallurgical Technology Co.,Ltd.,Nanning,Guangxi 530033,China)

机构地区：[1]广西天工冶金科技有限公司,广西南宁530033

出　　处：《中国锰业》2025年第1期71-75,共5页China Manganese Industry

摘　　要：广西某铝土矿为堆积型、含泥铝土矿,选矿厂采用干式加工工艺在破碎筛分过程中产生的副产物矿泥,是细粒铝土矿与黏土混合物。矿泥Al_(2)O_(3)和SiO_(2)品位分别为42.40%和14.32%,铝硅比为2.96。为回收该矿泥中的有用矿物,对其进行干式回收铝土矿试验研究。采用烘干-碾筛机的干式分选工艺,最终获得铝土矿产品产率为30.11%,Al_(2)O_(3)和SiO_(2)的品位分别为46.94%和8.91%,铝硅比5.27,相对净矿回收率为62.62%,达到出厂合格指标,对矿泥中细粒铝土矿进行了有效的回收。The bauxite in Guangxi is heap-type and clay-containing.During the crushing and screening process of the beneficiation plant,the by-product mineral slime,a mixture of fine-grained bauxite and clay,is produced.The mineral slime contains 42.40%Al_(2)O_(3),14.32%SiO_(2),and has an aluminum-silicon ratio of 2.96.To recover useful minerals from the mineral slime,experimental research on the dry recovery of bauxite was conducted.Through a dry sorting process of drying and using a rolling screen machine,a bauxite yield of 30.11%was achieved,with the Al 2O 3 grade at 46.94%,SiO_(2)grade at 8.91%,aluminum-silicon ratio at 5.27,and a relative net recovery rate of 62.62%,meeting the factory’s qualified standards.This effectively recovered fine-grained bauxite from the slime and enabled tailings resource utilization.

关 键 词：细粒铝土矿 干式选矿 综合回收 

分 类 号：TD951[矿业工程—选矿]