钒钛烧结矿与普通烧结矿低温还原粉化性的对比研究
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摘要
试验研究分析了钒钛烧结矿与普通烧结矿的低温还原粉化性,结果表明:普通烧结矿在500℃低温还原粉化性最差,粉化指数达83.80%;钒钛烧结矿在700℃时低温还原粉化指数达到最低值41.94%,低温还原粉化性能最差;普通烧结矿低温还原粉化指数是钒钛烧结矿的2倍,钒钛烧结矿低温还原粉化性很差;调整钒钛烧结矿化学成分组成,使Mg O含量提高到5%左右,以及喷洒氯化物稀溶液时都可以改善钒钛烧结矿低温还原粉化性。
The experimental results show that the pulverization of vanadium and titanium sintered ore and ordinary sintered ore at low temperature is analyzed. The results show that ordinary sinter At 500 ℃,the pulverization rate was 83.80%. Vanadium and titanium sintered ore at 700 ℃ low temperature reduction pulverization reached a minimum value of 41.94%,the lowest temperature reduction powder performance.The low-temperature reduction and pulverization index RDI_(+3.15) of vanadium-titanium sintered ore is less than half of the ordinary sintered ore,and the low-temperature reduction pulverization performance of vanadium-titanium sintered ore is worse than that of ordinary sinter. Adjust the composition of the chemical composition of vanadium titanium sinter,so that the Mg O content can be increased to about 5%,as well as spray chloride dilute solution to improve the low temperature of vanadium titanium sinter.
The experimental results show that the pulverization of vanadium and titanium sintered ore and ordinary sintered ore at low temperature is analyzed. The results show that ordinary sinter At 500 ℃,the pulverization rate was 83.80%. Vanadium and titanium sintered ore at 700 ℃ low temperature reduction pulverization reached a minimum value of 41.94%,the lowest temperature reduction powder performance.The low-temperature reduction and pulverization index RDI_(+3.15) of vanadium-titanium sintered ore is less than half of the ordinary sintered ore,and the low-temperature reduction pulverization performance of vanadium-titanium sintered ore is worse than that of ordinary sinter. Adjust the composition of the chemical composition of vanadium titanium sinter,so that the Mg O content can be increased to about 5%,as well as spray chloride dilute solution to improve the low temperature of vanadium titanium sinter.
引文
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[2]Liu Zhulin.Ironmaking raw materials[M].Beijing:Chemical Industry Press,2007:85-86.(刘竹林.炼铁原料[M].北京:化学工业出版社,2007:85-86.)
[3]Liang Zhongyu.Ironmaking[M].Beijing:Metallurgical Industry Press,2009:129-134.(梁中渝.炼铁学[M].北京:冶金工业出版社,2009:129-134.)
[4]Maeda T.Relationship between reducibility and microstrue ture of synthesized sinter of Fe2O3binary calcium ferrite[J].ISIJ International,1986,26(10):B306.
[5]Qin Fengjiu.Influences of microscopic structure and minfralogy on their metallurgical properties[J].Intering and Pelletizing.1993,18(2):12.(秦风久.烧结显微结构及物相组成对冶金性能的影响[J].烧结球团,1993,18(2):12.)
[6]Pan Baogju,Zhang Chengji.Application technology of chinese railway[M].Beijing:Metallurgical Industry Press,2000.(潘宝巨,张成吉.中国铁征石造块适用技术[M].北京:冶金工业出版社,2000.)
[7]Guo Xingmin,Zhu Li,Li Qiang,et al.Mineralogical composition and microstructure of high basicity sinters[J].Iron and Steel,2007(1):17-19,49.(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(1):17-19,49.)
[8]Fu Juying,Jiang Tao,Zhu Deqing.Sintered pellets[M].Changsha:Central South University of Technology Press,1996:2.(傅菊英,姜涛,朱德庆.烧结球团学[M].长沙:中南工业大学出版社,1996:2.)
[9]Qi Yuzhen,Meng Jianrong,Xu Haifang,et al.Reducing the RDI of the sinter[J].Shanxi Metallurgy,2013(2):49-51.(齐玉珍,孟建荣,徐海芳,等.降低烧结矿低温还原粉化率[J].山西冶金,2013(2):49-51.)
[10]He Daozhong.Investigation on reducing-powdered property of high titanium sinter[J].Hunan Metallurgy,2000(5):3-7.(贺道中.高钛烧结矿还原粉化性能的研究[J].湖南冶金,2000(5):3-7.)
[11]Zhou Mingshun,Zhai Liwei,Liu Jie,et al.Experimental research on improving metallurgical properties of Ansteel sinter[J].Intering and Pelletizing,2012(1):12-16.(周明顺,翟立委,刘杰,等.改善鞍钢烧结矿冶金性能的试验研究[J].烧结球团,2012(1):12-16.)
[12]Qin Peng.Sinter powder of low-temperature reduction(RDI)factors affecting[C]//2012 National Conference on Ironmaking Production Technology.China Metal Society,2012:9.(秦鹏.烧结矿低温还原粉化(RDI)影响因素的研究[C]//2012年全国炼铁生产技术会议暨炼铁学术年会文集(上).中国金属学会,2012:9.)
[13]Lei Chao,Wei Yonggang.Pulverization of iron ore sinter in low temperature reduction process[J].The Chinese Journal of Process Engineering,2015(2):284-288.(雷超,魏永刚.烧结铁矿的低温还原粉化[J].过程工程学报,2015(2):284-288.)
[14]Wang Xiqing.Vanadium-titanium magnetite blast furnace smelting[M].Beijing:Metallurgical Industry Press,1994.(王喜庆.钒钛磁铁矿高炉冶炼[M].北京:冶金工业出版社,1994.)
[15]Bao Yichen,Lai Qicui.Study on low temperature reduction disinteration properties of vanadium-titanium magnetite ore sinters[J].Sintering and Pelletizing,1991(2):10-16.(包毅成,赖其萃.钒钛烧结矿低温还原粉化性能的研究[J].烧结球团,1991(2):10-16.