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碳酸钠在高磷鲕状赤铁矿直接还原中的作用

DOI: 10.3969/j.issn.1005-3026.2014.07.026, PP. 1028-1032

Keywords: 高磷鲕状赤铁矿,纤磷钙铝石,碳酸钠,直接还原焙烧,脱磷

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Abstract:

为了研究碳酸钠对尼日利亚某高磷鲕状赤铁矿直接还原焙烧-磁选脱磷效果的影响,采用X射线衍射(XRD)和扫描电镜(SEM)研究了添加碳酸钠后直接还原焙烧的产物.结果表明,还原焙烧过程中添加碳酸钠后可以实现脱磷:碳酸钠的加入抑制了铁橄榄石的生成,阻断了磷进入金属铁的过程;使得鲕粒结构破坏,促进金属铁颗粒的聚集长大,有利于金属铁颗粒与脉石的解离;原矿中含磷矿物在焙烧过程中与碳酸钠反应生成可溶性的Na3PO4,在磨矿磁选过程中溶于水,使直接还原铁中磷的含量降低.

References

[1]  Wu J,Wen Z J,Cen M J.Development of technologies for high phosphorus oolitic hematite utilization[J].Steel Research International,2011,82(5):494/500.
[2]  Li G H,Jiang T,Liu M D,et al.Beneficiation of highaluminiumcontent hematite ore by soda ash roasting[J].Mineral Processing and Extractive Metallurgy Review,2010,31(3):150/164.
[3]  唐云,刘安荣,杨强,等.贵州赫章鲕状赤铁矿选矿试验研究[J].金属矿山,2011(1):45/48,67.(Tang Yun,Liu Anrong,Yang Qiang,et al.Test research on beneficiation of Hezhang oolitic hematite in Guizhou Province[J].Metal Mine,2011(1):45/48,67.)
[4]  Xia W T,Ren Z D,Gao Y F,et al.Removal of phosphorus from high phosphorus iron ores by selective HCl leaching method[J].Journal of Iron and Steel Research,International,2011,18(5):1/4.
[5]  Muhammed M,Zhang Y.A hydrometallurgical process for the dephosphorization of iron ore[J].Hydrometallurgy,1989,21(3):277/280.
[6]  Sun Y S,Han Y X,Gao P,et al.Recovery of iron from high phosphorus oolitic iron ore using coalbased reduction followed by magnetic separation[J].International Journal of Minerals,Metallurgy and Materials,2013,20(5):411/414.
[7]  Tang H Q,Guo Z C,Zhao Z L.Phosphorus removal of high phosphorus iron ore by gasbased reduction and melt separation[J].Journal of Iron and Steel Research,International,2010,17(9):1/6.
[8]  Li Y L,Sun T C,Yang H F,et al.Study of direct reduction and synchronous dephosphorization for high phosphorus oolitic hematite[J].Mining and Metallurgical Engineering,2011,31(2):68/70.
[9]  许言,孙体昌,杨志超,等.尼日利亚某高磷铁矿石工艺矿物学研究[J].中国矿业,2012(4):89/93.(Xu Yan,Sun Tichang,Yang Zhichao,et al.Process mineralogy study on some high phosphorous iron ore in Nigeria[J].China Mining Magazine,2012(4):89/93.)

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