FeO含量对SiO_2-CaO-Al_2O_3-MgO(-FeO)酸性渣熔化温度的影响
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摘要
基于熔渣离子理论,利用导电法在高纯氩气保护下测定SiO2-CaO-Al2O3-MgO(-FeO)酸性渣(二元碱度R=0.6)的熔化温度,考察FeO含量对酸性渣熔化温度的影响。结果表明,FeO的加入可以降低酸性母渣SiO2-CaO-Al2O3-MgO的熔化温度,且渣中FeO含量越大,渣样熔化温度越低;当渣中FeO含量低于20%时,随着FeO含量的增加,渣样熔化温度降低幅度较大;当渣中FeO含量高于20%时,随着FeO含量的增加,酸性渣熔化温度降低趋势变缓。
According to the ionic theory of molten slag,the melting temperature of SiO2-CaO-Al2O3-MgO(-FeO) acid slag(binary basicity R=0.6) was determined by means of the conductive method under the protection of high-purity Ar,and the influence of FeO on the melting characterization of SiO2-CaO-Al2O3-MgO acid mother slag was investigated.The results show that the melting temperature of acid mother slag decreases with the addition of FeO and the more FeO added,the lower the melting temperature will be.When the content of FeO in the slag is lower than 20%,the decreasing scope of the melting temperature with the increase of FeO content is bigger than when the content of FeO in the slag exceeds 20%.
According to the ionic theory of molten slag,the melting temperature of SiO2-CaO-Al2O3-MgO(-FeO) acid slag(binary basicity R=0.6) was determined by means of the conductive method under the protection of high-purity Ar,and the influence of FeO on the melting characterization of SiO2-CaO-Al2O3-MgO acid mother slag was investigated.The results show that the melting temperature of acid mother slag decreases with the addition of FeO and the more FeO added,the lower the melting temperature will be.When the content of FeO in the slag is lower than 20%,the decreasing scope of the melting temperature with the increase of FeO content is bigger than when the content of FeO in the slag exceeds 20%.
引文
[1]Hsin Chien Chuang,Weng Sing Hwang,Shih HsienLiu.Effects of basicity and FeO content on the sof-tening and melting temperatures of the CaO-SiO2-MgO-Al2O3slag system[J].Materials Transac-tions,2009,50(6):1448-1456.
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[10]刘剑辉,朱荣,李士琦,等.EAF-LF-VOD-铸造流程ZG06Crl3Ni4Mo钢中CaO-Al2O3-SiO2-MgO系夹杂物转变研究[J].特殊钢,2011,32(3):28-32.
[11]Hojong Kim,James Paramore,Antoine Allanore,et al.Electrolysis of molten iron oxide with an iridi-um anode:the role of electrolyte basicity[J].Jour-nal of The Electrochemical Society,2011,158(10):E101-E105.
[12]高运明,姜英,张华,等.可控氧流冶金[J].武汉科技大学学报:自然科学版,2007,30(5):449-453.
[13]周秀丽.利用电导电极法测量保护渣熔化温度的研究[D].沈阳:东北大学,2006.
[2]Fredrik Dahl,Jenny Brandberg,Du Sichen.Charac-terization of melting of some slags in the Al2O3-CaO-MgO-SiO2quaternary system[J].ISIJ Interna-tional,2006,46(4):614-616.
[3]Shankar A,Gornerup M,Lahiri A K,et al.Experi-mental investigation of the viscosities in CaO-SiO2-MgO-Al2O3and CaO-SiO2-MgO-Al2O3-TiO2slags[J].Metallurgical and Materials Transactions B,2007,38B(6):911-915.
[4]Hyuk Kim,Wan Ho Kim,Il Sohn,et al.The effectof MgO on the viscosity of the CaO-SiO2-20wt%Al2O3-MgO slag system[J].Steel Research Interna-tional,2010,81(4):261-264.
[5]Tang Xulong,Zhang Zuotai,Guo Min,et al.Vis-cosities behavior of CaO-SiO2-MgO-Al2O3slag withlow mass ratio of CaO to SiO2,and wide range ofAl2O3content[J].Journal of Iron and Steel Re-search,International,2011,18(2):1-6,17.
[6]Gong Liu,Xu Jifang,Zhang Jieyu,et al.Measuringand modeling of viscosities of selected CaO-MgO-Al2O3-SiO2-FeO slags[J].Journal of Rare Earths,2011,29:38-43.
[7]Guo Hua Zhang,Kuo Chih Chou,Ken Mills.Mod-elling viscosities of CaO-MgO-Al2O3-SiO2 moltenslags[J].ISIJ International,2012,52(3):355-362.
[8]Stovpchenko A P,Medovar L B.Acid process inmodern steelmaking[J].Elektrometallurgiya,2007(12):13-16.
[9]Fraser D G.Acid-base properties and structons:to-wards a structural model for predicting the thermo-dynamic properties of silicate melts[J].Annals ofGeophysics,2005,48(4/5):549-559.
[10]刘剑辉,朱荣,李士琦,等.EAF-LF-VOD-铸造流程ZG06Crl3Ni4Mo钢中CaO-Al2O3-SiO2-MgO系夹杂物转变研究[J].特殊钢,2011,32(3):28-32.
[11]Hojong Kim,James Paramore,Antoine Allanore,et al.Electrolysis of molten iron oxide with an iridi-um anode:the role of electrolyte basicity[J].Jour-nal of The Electrochemical Society,2011,158(10):E101-E105.
[12]高运明,姜英,张华,等.可控氧流冶金[J].武汉科技大学学报:自然科学版,2007,30(5):449-453.
[13]周秀丽.利用电导电极法测量保护渣熔化温度的研究[D].沈阳:东北大学,2006.