TiO_2对富钛复合铁酸钙生成与还原影响的研究
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摘要
为了研究Ti O2对复合铁酸钙生成与还原的影响,在实验室的条件下,利用卧式电加热炉对富钛复合铁酸钙的生成以及Ti O2对其软熔性能的影响进行了研究,并利用高温动力学实验炉分析了不同含钛量对复合铁酸钙还原的影响。研究结果表明,富钛复合铁酸钙微观形貌与普通复合铁酸钙的大致相同,均存在熔蚀状、板条状和树枝状等形状。但形态和数量上存在差异,富钛复合铁酸钙中针状铁酸钙较少,而板条状形态的铁酸钙更多;Ti O2会使复合铁酸钙液相的流动性变差,使其粘结能力下降。同时,Ti O2会阻碍复合铁酸钙还原的进行。
In order to study the effect of Ti O2 on the formation and reduction of SFCA,under the laboratory conditions,the formation of Ti-rich SFCA and the effect of Ti O2 on its soft melting properties were studied by using a horizontal electric heating furnace,and the effect of different titanium content on the reduction of calcium ferrite was analyzed by using a high temperature dynamic furnace. The results show that the micromorphology of Ti-rich SFCA is approximately the same as that of ordinary SFCA,and there are some shapes such as erosion,slate and dendrite. However,there are differences in morphology and quantity,and the content of acicular SFCA in Ti-rich SFCA is less,but there are more SFCA in the lath-shaped form. Ti O2 makes the fluidity of SFCA liquid phase worse,and reduces its bonding capacity. At the same time,Ti O2 will hinder the reduction of SFCA.
In order to study the effect of Ti O2 on the formation and reduction of SFCA,under the laboratory conditions,the formation of Ti-rich SFCA and the effect of Ti O2 on its soft melting properties were studied by using a horizontal electric heating furnace,and the effect of different titanium content on the reduction of calcium ferrite was analyzed by using a high temperature dynamic furnace. The results show that the micromorphology of Ti-rich SFCA is approximately the same as that of ordinary SFCA,and there are some shapes such as erosion,slate and dendrite. However,there are differences in morphology and quantity,and the content of acicular SFCA in Ti-rich SFCA is less,but there are more SFCA in the lath-shaped form. Ti O2 makes the fluidity of SFCA liquid phase worse,and reduces its bonding capacity. At the same time,Ti O2 will hinder the reduction of SFCA.
引文
[1]周密,姜涛,杨松陶,等.普矿配加对钒钛烧结矿质量的影响[J].钢铁,2015,50(8):10-15.
[2]吴少敏,冯根生.宝钢数据挖掘系统[J].宝钢技术,2001,(1):43-47.
[3]郭兴敏,朱利,李强,等.高碱度烧结矿的矿物组成与矿相结构特征[J].钢铁,2007,42(1):17-19.
[4]杨先觉.高碱度烧结矿还原特性分析[J].烧结球团,2000,25(4):8-11.
[5]胡长庆,闫龙格,赵凯,等.Al2O3、Mg O交互作用对复合铁酸钙生成影响机理[J].中国冶金,2017,27(4):5-10.
[6]郄亚娜,吕庆,张旭升,等.Ti O2含量对烧结矿矿相结构的影响[J].钢铁研究学报,2015,27(11):21-25.
[7]李超.承德钒钛磁铁矿烧结成矿机理研究[D].唐山:河北联合大学,2014.
[8]Webster,Nathan A,S,Pownceby,et al.Fundamentals of Silico-Ferrite of Calcium and Aluminum(SFCA)and SFCA-I Iron Ore Sinter Bonding Phase Formation:Effects of Ca O:Si O2 Ratio[J].Metallurgical and Materials Transactions,2014,45(6):2097-2105.
[9]甘勤,何群.影响钒钛烧结矿铁酸钙生成因素的研究[J].烧结球团,2008,(2):9-14.
[10]Webster N A S,Churchill J G,Tufaile F,et al.Fundamentals of Silico-Ferrite of Calcium and Aluminium(SFCA)and SFCA-I Iron Ore Sinter Bonding Phase Formation:Effects of Titanomagnetite-based Ironsand and Titanium Addition[J].Isij International,2016,56(10):1715-1722.
[11]王耀祖,张建良,刘征建,等.W(Ti O2)对烧结矿矿相结构及软熔滴性能的影响[J].钢铁,2017,52(10):20-28.
[12]Jian-liang Zhang,Ya-peng Zhang,Li Ke-jiang,et al.Microstructure and Phase Transformation of a Sinter Bearing Low Ti During Reduction[J].Metallurgical and Material Transactions B.2016,47(B):3046-3055.
[2]吴少敏,冯根生.宝钢数据挖掘系统[J].宝钢技术,2001,(1):43-47.
[3]郭兴敏,朱利,李强,等.高碱度烧结矿的矿物组成与矿相结构特征[J].钢铁,2007,42(1):17-19.
[4]杨先觉.高碱度烧结矿还原特性分析[J].烧结球团,2000,25(4):8-11.
[5]胡长庆,闫龙格,赵凯,等.Al2O3、Mg O交互作用对复合铁酸钙生成影响机理[J].中国冶金,2017,27(4):5-10.
[6]郄亚娜,吕庆,张旭升,等.Ti O2含量对烧结矿矿相结构的影响[J].钢铁研究学报,2015,27(11):21-25.
[7]李超.承德钒钛磁铁矿烧结成矿机理研究[D].唐山:河北联合大学,2014.
[8]Webster,Nathan A,S,Pownceby,et al.Fundamentals of Silico-Ferrite of Calcium and Aluminum(SFCA)and SFCA-I Iron Ore Sinter Bonding Phase Formation:Effects of Ca O:Si O2 Ratio[J].Metallurgical and Materials Transactions,2014,45(6):2097-2105.
[9]甘勤,何群.影响钒钛烧结矿铁酸钙生成因素的研究[J].烧结球团,2008,(2):9-14.
[10]Webster N A S,Churchill J G,Tufaile F,et al.Fundamentals of Silico-Ferrite of Calcium and Aluminium(SFCA)and SFCA-I Iron Ore Sinter Bonding Phase Formation:Effects of Titanomagnetite-based Ironsand and Titanium Addition[J].Isij International,2016,56(10):1715-1722.
[11]王耀祖,张建良,刘征建,等.W(Ti O2)对烧结矿矿相结构及软熔滴性能的影响[J].钢铁,2017,52(10):20-28.
[12]Jian-liang Zhang,Ya-peng Zhang,Li Ke-jiang,et al.Microstructure and Phase Transformation of a Sinter Bearing Low Ti During Reduction[J].Metallurgical and Material Transactions B.2016,47(B):3046-3055.