高炉渣主要组分对其熔化特性及黏度的影响
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摘要
以攀枝花高钛型高炉渣为主要原料,采用正交试验设计法研究了高炉渣主要组分(CaO/SiO_2(二元碱度R2)、TiO_2、Al_2O_3、Mg O)对其半球点温度、流动温度及黏度的影响。结果表明,高炉渣主要组分对其半球点温度影响的大小顺序为:R2>TiO_2>Mg O>Al_2O_3;对流动温度的影响顺序为:Al_2O_3>R2>Mg O>TiO_2;对黏度的影响顺序为:R2>Al_2O_3>TiO_2>Mg O;随着碱度R2增加,熔化温度及黏度呈先升高后降低的规律;随着TiO_2含量的增加,熔化温度呈先升高后略有降低的趋势,黏度呈先降低后增加的趋势;随着Al_2O_3含量增加,半球点温度呈先减小后增大的趋势,流动温度大致呈逐渐增大的趋势,黏度呈先降低后升高再降低的变化趋势;随着MgO含量的增加,熔化温度有一定的降低,黏度呈先升高后降低的趋势。
Using titanium-bearing blast furnace slag from Panzhihua as raw materials,the effects of main components(CaO/SiO_2,TiO_2,Al_2O_3,Mg O) on melting characteristics and viscosity properties were studied through orthogonal design in this paper.The results show that the order of various factors affecting on slag's hemisphere point temperature is R2> TiO_2> MgO > Al_2O_3; that on flowing temperature is Al_2O_3> R2> Mg O > TiO_2,and that on viscosity is R2> Al_2O_3> TiO_2> Mg O.The melting temperature increases with the increasing of alkalinity and TiO_2 content and then decreases,however,the temperature continuously decreases with the increasing of Mg O content in the experiment range.The viscosity increases with the increasing of alkalinity and Mg O content and then decreases.With the increasing of TiO_2 content and Mg O content,the viscosity decreases firstly,then increases.With the increasing of Al_2O_3 content,the slag' s hemisphere point temperature decreases at first then increases,and the flowing temperature decreases a bit.
Using titanium-bearing blast furnace slag from Panzhihua as raw materials,the effects of main components(CaO/SiO_2,TiO_2,Al_2O_3,Mg O) on melting characteristics and viscosity properties were studied through orthogonal design in this paper.The results show that the order of various factors affecting on slag's hemisphere point temperature is R2> TiO_2> MgO > Al_2O_3; that on flowing temperature is Al_2O_3> R2> Mg O > TiO_2,and that on viscosity is R2> Al_2O_3> TiO_2> Mg O.The melting temperature increases with the increasing of alkalinity and TiO_2 content and then decreases,however,the temperature continuously decreases with the increasing of Mg O content in the experiment range.The viscosity increases with the increasing of alkalinity and Mg O content and then decreases.With the increasing of TiO_2 content and Mg O content,the viscosity decreases firstly,then increases.With the increasing of Al_2O_3 content,the slag' s hemisphere point temperature decreases at first then increases,and the flowing temperature decreases a bit.
引文
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[2]郭兴忠.高炉中钛渣性能的研究[D].重庆:重庆大学,1999:37-45.
[3]彭波,吴光亮,代宾,等.含钛高炉渣熔化性温度的试验研究[J].金属材料与冶金工程,2012,40(1):18-21.
[4]MULLER J,ERWEE M.Blast furnace control using slag viscosities and liquidus temperatures with phase equilibria calculations[J].Southern African Pyrometallurgy,2011,6(9):309.
[5]KONDRATIEV A,JAK E,HAYES P C.Predicting slag viscosities in metallurgical systems[J].JOM,2002,54(11):41.
[6]SHANKAR A,GORNERUP M,LAHIRI A K,et al.Estimation of viscosity for blast furnace type slags[J].Ironmaking and Steelmaking,2007,36(6):477.
[7]李兴华,王雪松,刘知路,等.高钛高炉渣综合利用新方向[J].钢铁钒钛,2009,30(3):10-16.
[8]吴长生,李玉华,邱金龙,等.梅钢高炉渣流动性能的实验研究[J].冶金丛刊,2009(5):1-3.
[9]张金柱,施丽丽,敖万忠.高炉高铝低钛渣的熔化性[J].钢铁研究学报,2010,22(4):16-19.
[10]郭德勇,张杰,鲁德昌,等.碱度对Ca O-Si O2-Al2O3-Mg O-Ti O2渣系黏度的影响[J].钢铁,2014,49(10):13-17.
[11]NAKAMOTO M,TSUGAWA Y,KIYOSE A,et al.Effect of Ti O2on the viscosity of molten slag in Si O2-Ca O-Mg O system[J].Journal of High Temperature Society,2007,32(5):74.
[12]张振峰,吕庆,李福民.高Al2O3钒钛炉渣熔化性能的实验研究[J].东北大学学报,2007,28(10):1414-1416.