真空条件下黄磷冶炼副产品磷铁综合利用工艺分析
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摘要
实现矿热炉制黄磷的副产品磷铁综合利用仍很困难。通过借鉴俄罗斯学者提出的采用75~#硅铁与磷铁混合熔炼进行黄磷副产品磷铁的回收利用新方法,采用真空精炼进一步降低产品45~#硅铁中的磷含量,得到磷含量合格的45~#硅铁合金。首先对真空条件下硅铁与磷铁熔体反应进行热力学分析,然后对该新工艺进行了物料衡算与成本估算。研究表明,采用真空感应熔炼处理75~#硅铁与磷铁反应制备低磷45~#硅铁以及黄磷新工艺,可有效解决矿热炉制黄磷的副产物磷铁的综合利用问题。
It's difficult to achieve comprehensive utilization of ferrophosphorus which is by-product of yellow phosphorus producing in submerged arc furnace. On the base of Russian scholars' process of recycling ferrophosphorus of byproduction in yellow phosphorus producing by mixing 75% molten ferrosilicon and ferrophosphorus to produce 45% ferrosilicon,this paper proposes a new process to further reducing phosphorus content of 45% ferrosilicon to get the qualified ferrosilicon by vacuum refining. Firstly,the thermodynamic analysis of reaction between ferrosilicon and ferrophosphorus melt under vacuum condition is finished. Then material balance and cost estimation of the new process are carried out. Research shows that it is effective to solve the problem of comprehensive utilization of by-product ferrophosphorus of yellow phosphorus producing in submerged arc furnace by the new process that prepares low phosphorus 45% ferrosilicon and yellow phosphorus by melting 75% ferrosilicon and ferrophosphorus using vacuum induction.
It's difficult to achieve comprehensive utilization of ferrophosphorus which is by-product of yellow phosphorus producing in submerged arc furnace. On the base of Russian scholars' process of recycling ferrophosphorus of byproduction in yellow phosphorus producing by mixing 75% molten ferrosilicon and ferrophosphorus to produce 45% ferrosilicon,this paper proposes a new process to further reducing phosphorus content of 45% ferrosilicon to get the qualified ferrosilicon by vacuum refining. Firstly,the thermodynamic analysis of reaction between ferrosilicon and ferrophosphorus melt under vacuum condition is finished. Then material balance and cost estimation of the new process are carried out. Research shows that it is effective to solve the problem of comprehensive utilization of by-product ferrophosphorus of yellow phosphorus producing in submerged arc furnace by the new process that prepares low phosphorus 45% ferrosilicon and yellow phosphorus by melting 75% ferrosilicon and ferrophosphorus using vacuum induction.
引文
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[11]Safarian J.,Tangstad,M.Kinetics and Mechanism of Phosphorus Removal from Silicon In Vacuum Induction Refining[J].High temperature material processes.2012,31(1):73-81.
[12]Zheng Songsheng,Engh Thorvald,Tangstad Merete,et al.Numerical Simulation of Phosphorus Removal from Silicon by Induction Vacuum Refining[J].Metallurgical and Materials Transactions A,2011,42(8):2 214-2 225.
[13]Yuge N,K Hanazawa,K Nishikawa,et al.Removal of Phosphorus,Aluminum and Calcium by evaporation in molten silicon[J].J Japan Inst metals,1997,61(10):1 086-1 093.
[14]Zheng S S,Chen W H,Cai J,et al.Mass Transfer of Phosphorous in Silicon Melts Under Vacuum Induction Refining[J].Metallurgical and Materials Transation,2010,41:1 268-1 273.
[15]T.Miki,K.Morita,N.Sano.Thermodynamics of phosphorus in molten silicon[J].Metallurgical&Materials Transactions B,1996,27(6):937-941.
[16]杨大海,储少军,陈佩仙.关于矿热炉冶炼镍铁工艺中磷的问题[J].铁合金,2011,42(4):1-4.
[2]郭和一,闫康平,吴鹏程,等.磷化工副产物磷铁制备锂电池正极材料Li Fe PO4的研究[J].新能源进展,2014,(2):141-145.
[3]韦寿南.黄磷副产磷铁的利用[J].无机盐工业,1990(1):32-34.
[4]陈善继.黄磷副产物磷铁的综合利用[J].磷肥与复肥,2010,25(6):62-64.
[5]李成佳,李根,郭和一,等.磷化工副产磷铁渣电解制备Fe PO4[J].磷肥与复肥,2014,29(4):3-14.
[6]杨睿,肖仁贵.磷铁为原料合成电池正极材料磷酸铁锂的研究[J].贵州大学学报:自然科学版,2015,32(3):85-88.
[7]崔倩,李根,闫康平.磷铁制备锂电池材料Li Fe PO4的碳包覆优化研究[J].成都大学学报:自然科学版,2015,34(4):395-398.
[8]V.M.Shevko,G.M.Serzhanov,G.E.Karataeva,et al.Thermodynamic Features and an Experimental Study of the Extraction of Phosphorus from Ferrophosphorus in the Presence of Iron Silicides[J].Elektrometallurgiya,2015(10):36-42.
[9]Mendikarayevich S G,Mikhaylovich S V,Mikhaylovna Y M.[J].Modern Applied Science,2015,9(6):160-172.
[10]KX Wei,MA Wen-Hui,YN Dai,etc.Vacuum distillation refining of metallurgical grade silicon(1):Thermodynamics on removal of phosphorus from metallurgical grade silicon[J].Trans.Nonferrous Met.Soc.China,2007,17(s):1 022-1 025.
[11]Safarian J.,Tangstad,M.Kinetics and Mechanism of Phosphorus Removal from Silicon In Vacuum Induction Refining[J].High temperature material processes.2012,31(1):73-81.
[12]Zheng Songsheng,Engh Thorvald,Tangstad Merete,et al.Numerical Simulation of Phosphorus Removal from Silicon by Induction Vacuum Refining[J].Metallurgical and Materials Transactions A,2011,42(8):2 214-2 225.
[13]Yuge N,K Hanazawa,K Nishikawa,et al.Removal of Phosphorus,Aluminum and Calcium by evaporation in molten silicon[J].J Japan Inst metals,1997,61(10):1 086-1 093.
[14]Zheng S S,Chen W H,Cai J,et al.Mass Transfer of Phosphorous in Silicon Melts Under Vacuum Induction Refining[J].Metallurgical and Materials Transation,2010,41:1 268-1 273.
[15]T.Miki,K.Morita,N.Sano.Thermodynamics of phosphorus in molten silicon[J].Metallurgical&Materials Transactions B,1996,27(6):937-941.
[16]杨大海,储少军,陈佩仙.关于矿热炉冶炼镍铁工艺中磷的问题[J].铁合金,2011,42(4):1-4.