Flotation separation of magnetic separation concentrate of refractory hematite containing carbonate with enhanced dispersion
Flotation separation of magnetic separation concentrate of refractory hematite containing carbonate with enhanced dispersion
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发表时间：
2013
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通讯作者：
H. Ying
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作者：
H. Ying
在矿石性质调查的基础上，通过添加碳酸钠和硅酸钠强化分散，开发了含碳酸铁的赤铁矿磁选精矿浮选工艺，以消除碳酸铁对浮选的不利影响，系统研究了最佳浮选条件，并通过SEM、XRD和EDS等手段对原矿、精矿和尾矿的结构和矿物成分进行了讨论。 结果表明，细粒样品中，细粒易相互团聚，覆盖在粗粒上。添加碳酸钠和硅酸钠可增强矿浆分散性，有利于含碳酸铁磁选精矿的选择性分选。在最佳试剂条件下，经过一粗二选，可得到铁品位66.20%、铁回收率71.52%的铁精矿。 清洁-两次清除闭路流程图。
Based on the investigation of ore properties,a flotation separation technology of hematite magnetic separation concentrate containing iron carbonate was developed with enhanced dispersion by adding sodium carbonate and sodium silicate to eliminate the negative impact of iron carbonate on flotation.The optimum flotation conditions were studied systematically.The structure and mineral composition of raw ore,concentrate and tailings were discussed by means of SEM,XRD and EDS.The results show that in the fine-grained sample,the fine grains are prone to agglomerate each other and cover on the coarse grains.Adding sodium carbonate and sodium silicate can enhance pulp dispersion,which benefits the selective separation of magnetic separation concentrate containing iron carbonate.An iron concentrate with Fe grade of 66.20% and Fe recovery of 71.52% can be obtained on optimum reagent condition through one rougher-two cleanings-two scavenges closed-circuit flowsheet.