Effect of Basicity and Alumina-Silica Ratio on Formation of Silico-Ferrite of Calcium and Aluminum

钢铁研究学报(英文版), 2012, 19(4): 1-5.

Effect of Basicity and Alumina-Silica Ratio on Formation of Silico-Ferrite of Calcium and Aluminum

^1, , ^2, , ^3, , ^4,

1.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010,Inner Mongolia, China／School of Metallurgical and Ecological Engineering University of Science andTechnology Beijing, Beijing 100083, China）

2.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010,Inner Mongolia, China

3.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010,Inner Mongolia, China／School of Metallurgical and Ecological Engineering University of Science andTechnology Beijing, Beijing 100083, China）

4.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010,Inner Mongolia, China／School of Metallurgical and Ecological Engineering University of Science andTechnology Beijing, Beijing 100083, China）

基金项目: Item Sponsored by Inner Mongolia Science Foundation of China (2009MS0702)

关键词：针状铁素体 , 烧结氧化铝 , 二氧化硅 , 低硅烧结矿 , 电子万能试验机 , 钙 , 碱性 , 体形

Effect of Basicity and Alumina-Silica Ratio on Formation of Silico-Ferrite of Calcium and Aluminum

ZHANG Fang ^1, , AN Sheng-li ^2, , LUO Guo-ping ^3, , WANG Yi-ci ^4,

2.School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010,Inner Mongolia, China

Keywords： Baivumebo iron concentrates , Baivumebo low silica sinter , SFCA , basicity , alumina-silica ratio ,

Baivumebo iron ore is special magnetite containing fluorine,kalium and sodium elements,and the main raw material for ironmaking of Baotou Iron and Steel（Group） Co.The effects of basicity and ratio of Al2O3 to SiO2（A/S） on the formation of silico-ferrite of calcium and aluminium（SFCA） in Baivumebo low silica sinters were studied by means of mini-sintering,XPF-500 optical mineralogical microscope and CSS-88000 electronic universal testing machine.The results show that it is beneficial to the formation of complex calcium ferrite to enhance the basicity of Baivumebo low silica sinters.The acicular SFCA-I was increased with the enhancing basicity and reached the peak at basicity 2.8,then the columnar or platy SFCA formed and the bonding strength decreased.Alumina is beneficial to the formation of acicular complex calcium ferrite in Baivumebo low silica sinters.But the residual unfused Al2O3 reagent came into being when A/S was 0.35,while complex calcium ferrite still remained to be acicular.There is a common rule about mineralogy components affected by basicity and ratio of A/S,that is,SFCA is increasing accompanied with hematite and porosity reduced,but the content of glass phase is stable

参考文献

[1]	TIM R.C. PATRICK;MARK I. POWNCEBY .Stability of Silico-Ferrite of Calcium and Aluminum (SFCA) in Air-Solid Solution Limits between 1240 deg C and 1390 deg C and Phase Relationships within the Fe_2O_3-CaO-Al_2O_3-SiO_2 (FCAS) System[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2002(1):79-89.
[2]	Nicola V. Y. Scarlett;Mark I. Pownceby;Ian C. Madsen .Reaction Sequences in the Formation of Silico-Fenites of Calcium and Aluminum in Iron Ore Sinter[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2004(5):929-936.
[3]	LUO Guo-ping;DUAN Yu;ZHAO Yan-xia et al.Influence of MgO on Mineral Composition and Microstructure of Sinter of Baotou Iron and Steel(Group)Co (in Chinese)[J].Journal of Inner Mongolia University of Science and Technology,2007,27(01):1.
[4]	FU Ju-ying;CHEN Yao-ming .Improvement of Mineral Composition of the Lower Fluorine Sinter and Microstructure in Baotou Iron and Steel Company (in Chinese)[J].Journal of Central South University of Technology(English Edition),1999,30(02):141.
[5]	GUO Xing-min.Formation and Mineralogy of Hematite in Sin-tering(in Chinese)[M].北京:冶金工业出版社,1999
[6]	WU Sheng-li;DU Jian-xin;MA Hong-bin et al.Self-Intensity of Binding Phase in Iron Ores During Sintering (in Chinese)[J].Journal of University of Science and Technology Beijing,2005,27(02):169.
[7]	WANG Shu-tong .Study on the Causes of Al2O3Aggravating Low Temperature Reduction Degradation of Siner (in Chinese)[J].Sintering and Palletizing,1997,22(02):1.
[8]	XUE Ming-sheng;GUO Xin-min .Effect of Al2O3and SiO2on Formation and Crystal Structure of Calcium Ferrit Containing Al2O3and SiO2 (in Chinese)[J].Journal of the Chinese Rare Earth Society,2008,26:205.
[9]	ZHANG Shi-juan;WANG Shu-tong .Formation Mechanism of Acicular Calcium Ferrite (in Chinese)[J].Iron & Steel,1992,27(07):7.
[10]	LONG Fang .The Effect on Ironmaking Raw Material and Metallurgical Process by High Content of Al2O3Iron Ore(in Chinese)[D].Wuhan:Wuhan University of Science and Technology,2006.
[11]	GUO Xing-min;ZHU Li;LI Qiang et al.Mineralogical Composition and Microstructure of High Basicity Sinters (in Chinese)[J].Iron & Steel,2007,42(01):17.
[12]	YANG Hua-ming;QIU Guan-zhou .Influence of Al2O3on RDI of Sinter (in Chinese)[J].Journal of Iron and Steel Research,1999,11(01):1.
[13]	WU Cheng-bo;YIN Guo-liang;CHENG Xiao-li et al.Research on Improving the Low Temperature Reduction Degradation of Low Silicon Sinter (in Chinese)[J].Iron & Steel,2010,45(04):16.
[14]	LIU Ji-quan;DUAN Xiang-guang .Investigation on Improving the Sinter DRI Property of Baotou Steel (in Chinese)[J].Sintering and Pelletizing,2008,33(02):27.
[15]	PEI Yuan-dong;ZHAO Zhi-xing;MA Ze-jun et al.Development of Theory and Technology on Overseas Iron Ore Sintering(Part 1) (in Chinese)[J].Sintering and Pelletizing,2010,35(03):1.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

Effect of Basicity and Alumina-Silica Ratio on Formation of Silico-Ferrite of Calcium and Aluminum

Effect of Basicity and Alumina-Silica Ratio on Formation of Silico-Ferrite of Calcium and Aluminum

参考文献