TiO_2含量对含钛铁矿粉熔化行为的影响
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摘要
为了更好地利用各种铁矿粉,使用"座滴法"研究了TiO_2含量对含钛铁矿粉的熔化行为。结果表明:试样收缩过程主要分为慢速和快速两个阶段;随着TiO_2含量的升高,除TiO_2含量为1%外,铁矿粉特征熔化温度呈现升高的趋势;TiO_2含量为1%时,铁矿粉特征熔化温度较低;随着TiO_2含量的升高,铁矿粉熔化时间呈现增加的趋势;TiO_2含量过高不利于降低烧结燃耗,综合考虑含钛铁矿粉特征温度和熔化时间,TiO_2含量应控制在3%以内。
In order to make better use of all kinds of iron ores,the effects of TiO_2 content on melting behavior of titanium-containing ilmenite powder were studied by the seat drop method. The results showed that the sample shrinkage process was divided into two stages:slow and fast steps.The melting temperature of iron ore powder showed a increasing trend with the increase of TiO_2 content.However,the melting temperature of iron ore powder was lower when the TiO_2 content was 1%.The melting time of iron ore powder showed an increasing trend with the increase of TiO_2 content. Sintering fuel consumption can not be reduced when TiO_2 content is too high.Taking into account the characteristic temperature and melting time of the ilmenite powder,the TiO_2 content should be controlled less than 3%.
In order to make better use of all kinds of iron ores,the effects of TiO_2 content on melting behavior of titanium-containing ilmenite powder were studied by the seat drop method. The results showed that the sample shrinkage process was divided into two stages:slow and fast steps.The melting temperature of iron ore powder showed a increasing trend with the increase of TiO_2 content.However,the melting temperature of iron ore powder was lower when the TiO_2 content was 1%.The melting time of iron ore powder showed an increasing trend with the increase of TiO_2 content. Sintering fuel consumption can not be reduced when TiO_2 content is too high.Taking into account the characteristic temperature and melting time of the ilmenite powder,the TiO_2 content should be controlled less than 3%.
引文
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[17]Wang Wenshan,Ren Gang,LüQing,et al.Influence of microstructure and mineral compositions of vanadium-titanium sinter on its RDI[J].Iron Steel Vanadium Titanium,2010,31(2):58-62.(王文山,任刚,吕庆,等.钒钛烧结矿矿物组成和显微结构对其低温还原粉化的影响[J].钢铁钒钛,2010,31(2):58-62.)
[2]Zou Leilei,LüQing,Liu Donghui,et al.Effects of the basic characteristics of mixed ores on RDI of vanadium-titanium sinter[J].China Metallurgy,2014,24(10):11-15.(邹雷雷,吕庆,刘东辉,等.混合矿基础特性对钒钛烧结矿RDI的影响[J].中国冶金,2014,24(10):11-15.)
[3]Zhou Mi,Jiang Tao,Yang Songtao,et al.The influence of the addition of ordinary ore on vanadium-titanium sinter properties[J].Iron and Steel,2015,50(8):10-15.(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.)
[4]Zhang Yong,Zhou Mi,Chu Mansheng,et al.Sintering experiments of high-Cr vanadium and titanium magnetite[J].Journal of Northeastern University(Natural Science),2013,34(3):383-387.(张勇,周密,储满生,等.高铬型钒钛磁铁矿烧结试验[J].东北大学学报(自然科学版),2013,34(3):383-387.)
[5]Liu Donghui,LüQing,Zou Leilei,et al.Influence of ratios of limonite on basic characteristics of vanadium titanium magnetite[J].Iron and Steel,2014,49(4):13-17.(刘东辉,吕庆,邹雷雷,等.褐铁矿配比对钒钛磁铁矿烧结基础特性的影响[J].钢铁,2014,49(4):13-17.)
[6]LüQing,Huang Honghu,Wan Xinyu,et al.Liquid-phase generating capacity during sintering of Chengde vanadium-titanium magnetite[J].Iron and Steel,2015,50(3):19-24.(吕庆,黄宏虎,万新宇,等.承德钒钛磁铁矿烧结过程中液相生成能力[J].钢铁,2015,50(3):19-24.)
[7]Wu Shengli,Liu Yu,Du Jianxin,et al.The new concept of the basic characteristics of sinter iron ore[J].Journal of University of Science and Technology Beijing,2002,24(3):254-257.(吴胜利,刘宇,杜建新,等.铁矿石的烧结基础特性之新概念[J].北京科技大学学报,2002,24(3):254-257.)
[8]Wu Shengli.Dai Yuming,Pei Yuandong,et al.Sintered optimized ore dressing based on high temperature characteristics of iron ore powder[J].Journal of University of Science and Technology Beijing,2010,32(6):719-724.(吴胜利,戴宇明,裴元东,等.基于铁矿粉高温特性互补的烧结优化配矿[J].北京科技大学学报,2010,32(6):719-724.)
[9]Cao Ligang.Study on sintering basic characteristics of iron ore powder for Baotou Steel[J].Sintering and Pelletizing,2005,30(5):5-7.(曹立刚.包钢用铁矿粉烧结基础特性研究[J].烧结球团,2005,30(5):5-7.)
[10]Wu Shengli,Du Jianxin,Ma Hongbin,et al.Iron ore sintering liquid flow characteristics[J].Journal of University of Science and Technology Beijing,2005,27(3):291-293.(吴胜利,杜建新,马洪斌,等.铁矿粉烧结液相流动特性[J].北京科技大学学报,2005,27(3):291-293.)
[11]Li Guangsen,Jin Mingfang,Jiang Xin,et al.Study on fluidity of binding phase in sinter[J].China Metallurgical,2008,18(5):20-23.(李光森,金明芳,姜鑫,等.烧结矿粘结相流动性的研究[J].中国冶金,2008,18(5):20-23.)
[12]Jiang Jihui,Hong Zaoao.Discussion on determination method of national standard for coal ash melting[J].Sintering and Pelletizing,2005,30(5):14-16.(江吉惠,洪灶熬.煤灰熔融性国家标准测定方法的探讨[J].烧结球团,2005,30(5):14-16.)
[13]Qi Chenglin,Zhang Jianliang,Chen Yongxing,et al.Experimental study on high temperature characteristics of sintered flux[J].The Chinese Journal of Process Engineering,2009(S1):266-269.(祁成林,张建良,陈永星,等.烧结熔剂高温特性的试验研究[J].过程工程学报,2009(S1):266-269.)
[14]Li Guangsen,Jin Mingfang,Jiang Xin,et al.Melting characteristics of agglomerating phase in sinter[J].Journal of Northeastern University(Natural Science),2008,29(5):697-700.(李光森,金明芳,姜鑫,等.烧结矿粘结相的熔化特性[J].东北大学学报(自然科学版),2008,29(5):697-700.)
[15]Wu Shengli,Bei Jicheng,Zhu Juan,et al.Influence of chemical composition on liquid fluidity of ferrite[J].Journal of Iron and Steel Research,2015,27(9):7-13.(吴胜利,贝纪承,朱娟,等.化学成分对铁酸盐烧结液相流动性的影响[J].钢铁研究学报,2015,27(9):7-13.)
[16]Kimura S,Muan A.Phase relations in system Ca O-iron oxide-Ti O2in air[J].American Mineralogist,1971,56(7-8):1322-1346.
[17]Wang Wenshan,Ren Gang,LüQing,et al.Influence of microstructure and mineral compositions of vanadium-titanium sinter on its RDI[J].Iron Steel Vanadium Titanium,2010,31(2):58-62.(王文山,任刚,吕庆,等.钒钛烧结矿矿物组成和显微结构对其低温还原粉化的影响[J].钢铁钒钛,2010,31(2):58-62.)