Titanium Concentration of Dry Tailings from Iron Separation of a Low-grade Vanadium-titanium Magnetite
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摘要: 某低品位钒钛磁铁矿干式选铁尾矿含钛9.65%,由于矿区严重缺水,钛资源一直未被回收利用。针对该矿铁钛矿物嵌布特点,制定了干式预选抛尾、磨矿弱磁除铁、强磁浮选选钛的技术方案,研究了磁场强度、磨矿细度等对选别指标的影响,最终获得了TiO2品位45.29%、回收率45.34%的钛精矿,有效回收了矿石中的钛资源。Abstract: The dry tailings from iron separation of a low-grade vanadium-titanium magnetite contain 9.65% TiO2. Due to an acute shortage of water in the mining area,titanium resources in the tailings have not been recycled. Considering the dissemination features of iron and titanium minerals in the tailings,a technical solution of dry pre-concentration for discarding followed by grinding and low-intensity magnetic separation for iron removal,then high-intensity magnetic separation and flotation for titanium concentration was designed. The effects of relevant factors (magnetic field intensity,grinding fineness,etc.) on the results were studied. Finally,the obtained titanium concentrate contained 45.29% TiO2 with a recovery rate of 45.34%,which indicates an effective recovery of titanium resources in the ore.
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Key words:
- vanadium-titanium magnetite /
- tailings /
- titanium concentration /
- dry pre-concentration /
- flotation
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