云南省允沟混合型铁矿选矿试验研究
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摘要
云南省允沟铁矿属于混合铁矿石类型,原矿铁品位为43.44%,主要以磁铁矿和赤、褐铁矿的形式存在。有害元素硫、磷、砷含量较低,对矿石的利用不造成影响。通过对该矿石原矿性质的研究,在磨矿细度为-0.074 mm占80%的条件下,采用弱磁选一强磁选,可以获得品位61.55%、铁回收率为85%的铁精矿;适度增加磨矿细度可以获得品位更高的铁精矿。
The iron ore in Yunnan province belongs to mixed-type iron ore containing 43.44%Fe,iron in the ore occurring mainly in form of magnetite,hematite or limonite.The content of detrimental elements such as S,P and As,are relatively low,which has no impact on the utilization of the ore.Through study on the mineralogy,a process of low intensity magnetic separation followed by high intensity magnetic separation at the grinding fineness of80%-0.074 mm is proposed,from which an iron concentrate assaying 61.55%Fe can be obtained at the recovery of 85%.A concentrate with higher grade can be achieved by properly increasing the grinding fineness to some extent.
The iron ore in Yunnan province belongs to mixed-type iron ore containing 43.44%Fe,iron in the ore occurring mainly in form of magnetite,hematite or limonite.The content of detrimental elements such as S,P and As,are relatively low,which has no impact on the utilization of the ore.Through study on the mineralogy,a process of low intensity magnetic separation followed by high intensity magnetic separation at the grinding fineness of80%-0.074 mm is proposed,from which an iron concentrate assaying 61.55%Fe can be obtained at the recovery of 85%.A concentrate with higher grade can be achieved by properly increasing the grinding fineness to some extent.
引文
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[5]唐雪峰,余永富,陈雯.某微细粒嵌布贫铁矿合理选矿工艺研究[J].矿冶工程,2010,30(1):41-43.
[6]谢峰,童雄,吕晋芳.云南某低品位难选磁铁矿选矿试验研究[J].矿冶,2011,20(4):47-50.
[7]朱照照,庄故章,金末梅,等.某磁铁矿可选性试验研究[J].矿冶,2011,20(2):30-33.
[2]刘小正.略钢黑鱼铁矿矿石选矿工艺研究[D].西安:西安建筑科技大学,2007.
[3]余永富.国内外铁矿选矿技术进展及对炼铁的影响[J].中国有色金属学报,2004,14(z1):47-51.
[4]陈江华,孟光栋.新疆某铁矿选矿试验研究[J].矿业工程,2011,9(6):23-25.
[5]唐雪峰,余永富,陈雯.某微细粒嵌布贫铁矿合理选矿工艺研究[J].矿冶工程,2010,30(1):41-43.
[6]谢峰,童雄,吕晋芳.云南某低品位难选磁铁矿选矿试验研究[J].矿冶,2011,20(4):47-50.
[7]朱照照,庄故章,金末梅,等.某磁铁矿可选性试验研究[J].矿冶,2011,20(2):30-33.
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