湖北某云母型含钒石煤重—浮联合预抛尾试验
发布时间：2019-05-09 09:51
【摘要】：湖北某云母型含钒石煤V_2O_5品位为0.81%,钒主要赋存在白云母和伊利石中。为提高酸浸给矿V_2O_5品位、降低酸浸作业矿量及耗酸矿物含量,从而降低酸耗和生产成本,对有代表性试样进行了重—浮联合工艺预抛尾试验。结果表明,试样在磨矿细度为-74μm占70.9%情况下,采用超极限螺旋溜槽粗选,粗选中矿再磨至-74μm占65.6%情况下进行螺旋溜槽再选,再选中矿再磨至-74μm占75.6%情况下正浮选,可抛出产率29.59%、V_2O_5品位为0.34%的合格尾矿,精矿V_2O_5品位提高至1.01%,V_2O_5回收率达87.60%,较好地实现了提高酸浸给矿V_2O_5品位、降低酸浸作业矿量及耗酸矿物含量的目标。
[Abstract]:The V _ 2O_5 grade of a mica type coal containing vanadium is 0.81%. Vanadium mainly occurs in Muscovite and Illite. In order to improve the V_2O_5 grade of acid leaching ore, reduce the amount of acid leaching ore and the content of acid consuming mineral, so as to reduce the acid consumption and production cost, the pre-tail-throwing test of the combined heavy-floatation process was carried out on representative samples. The results show that under the condition of grinding fineness of-74 渭 m accounting for 70.9%, the super-limit spiral chute is used for coarse separation and re-dressing of the spiral chute is carried out under the condition of re-grinding to-74 渭 m of-74 渭 m in coarse separation. When the ore is re-milled to-74 渭 m for 75.6% of flotation, the yield is 29.59%, and the V_2O_5 grade of concentrate is increased to 1.01% for qualified tailings with grade 0.34% of V _ (2) O _ (5). The recovery rate of V_2O_5 is 87.60%, which realizes the goal of improving the V_2O_5 grade of acid leaching ore and reducing the ore quantity and acid consumption mineral content of acid leaching operation.
【作者单位】： 武汉科技大学资源与环境工程学院;湖北省页岩钒资源高效清洁利用工程技术研究中心;钒资源高效利用湖北省协同创新中心;
【基金】：“十二五”国家科技支撑计划项目(编号:2015BAB18B01)
【分类号】：TD849.5;TD92
[Abstract]:The V _ 2O_5 grade of a mica type coal containing vanadium is 0.81%. Vanadium mainly occurs in Muscovite and Illite. In order to improve the V_2O_5 grade of acid leaching ore, reduce the amount of acid leaching ore and the content of acid consuming mineral, so as to reduce the acid consumption and production cost, the pre-tail-throwing test of the combined heavy-floatation process was carried out on representative samples. The results show that under the condition of grinding fineness of-74 渭 m accounting for 70.9%, the super-limit spiral chute is used for coarse separation and re-dressing of the spiral chute is carried out under the condition of re-grinding to-74 渭 m of-74 渭 m in coarse separation. When the ore is re-milled to-74 渭 m for 75.6% of flotation, the yield is 29.59%, and the V_2O_5 grade of concentrate is increased to 1.01% for qualified tailings with grade 0.34% of V _ (2) O _ (5). The recovery rate of V_2O_5 is 87.60%, which realizes the goal of improving the V_2O_5 grade of acid leaching ore and reducing the ore quantity and acid consumption mineral content of acid leaching operation.
【作者单位】： 武汉科技大学资源与环境工程学院;湖北省页岩钒资源高效清洁利用工程技术研究中心;钒资源高效利用湖北省协同创新中心;
【基金】：“十二五”国家科技支撑计划项目(编号:2015BAB18B01)
【分类号】：TD849.5;TD92
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