Influence of basicity on mineralogical microstructure and metallurgical property of sinter in shijiazhuang iron &amp; steel

Liu Lina

doi:10.7513/j.issn.1004-7638.2021.03.019

Volume 42 Issue 3

Jun. 2021

Turn off MathJax

Article Contents

Article Navigation > IRON STEEL VANADIUM TITANIUM > 2021 > 42(3): 125-129

Liu Lina. Influence of basicity on mineralogical microstructure and metallurgical property of sinter in shijiazhuang iron & steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 125-129. doi: 10.7513/j.issn.1004-7638.2021.03.019

Citation:

Liu Lina. Influence of basicity on mineralogical microstructure and metallurgical property of sinter in shijiazhuang iron & steel[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 125-129. doi: 10.7513/j.issn.1004-7638.2021.03.019

Citation:

PDF( 827 KB)

Influence of basicity on mineralogical microstructure and metallurgical property of sinter in shijiazhuang iron & steel

doi: 10.7513/j.issn.1004-7638.2021.03.019

Liu Lina^{1, 2
,}

1.
College of Mining Engineering, North China University of Science and Technology,Tangshan 063009,Hebei,China
2.
Mining Development and Sbafety Technology Key Lab of Heibei Province,Tangshan 063009,Hebei,China

Publish Date: 2021-06-10

Abstract

Abstract

The mineralogical compositions and microstructure of sinter with different basicity had been investigated by means of polarization microscope, and the relationship between the mineralogical microstructure and the metallurgical property of sinter had been analyzed. The result shows that when the basicity of the sinter varies from 1.8 to 2.4, the mineral composition of sinter is simple, and the content of the binder phase increases. With the basicity of sinter increased, the microstructure of the sinter is uniform gradually and changes from porphyric-granular texture to erosion interleaving texture, the content of the pore is elevated, the skeleton crystals hematite appear, the form of calcium ferrite is anhedron to neddle-shaped. Consequently the metallurgical property of the sinter is improved.
- sinter,
- basicity,
- mineral composition,
- microstructure,
- metallurgical

FullText(HTML)

References(15)

References

[1]	Zuo Jingyu, Bai Xiongfei. Discussion about increasing content of MgO in sinter[J]. Hebei Metallurgy, 2013,(5):1−3. (左静宇, 白熊飞. 石钢提高烧结矿中MgO含量探讨[J]. 河北冶金, 2013,(5):1−3. doi: 10.3969/j.issn.1006-5008.2013.05.001
[2]	Li Jie, Wang Xingjuan, Liu Ran, et al. Study of the sintering property of malaysia mines powder at Shijiazhuang iron & steel works[J]. Journal of Hebei United University Natural Science Edition, 2011,33(1):27−31. (李杰, 王杏娟, 刘然, 等. 石钢马来西亚粉烧结性能[J]. 河北理工大学学报(自然科学版), 2011,33(1):27−31.
[3]	Li Jie, Lv Qing. Research about adding malaysia ore powder in ore proportioning of sintering in Shijiazhuang steel[J]. Hebei Metallurgy, 2011,(5):3−6. (李杰, 吕庆. 石钢烧结配加马来西亚粉烧结性能的研究[J]. 河北冶金, 2011,(5):3−6. doi: 10.3969/j.issn.1006-5008.2011.05.001
[4]	Liu Lina, Han Xiuli, Liu Lei. Study on texture of sinter with different basicity[J]. Iron Steel Vanadium Titanium, 2017,38(2):112−115. (刘丽娜, 韩秀丽, 刘磊. 不同类型烧结矿随碱度变化的矿相结构研究[J]. 钢铁钒钛, 2017,38(2):112−115. doi: 10.7513/j.issn.1004-7638.2017.02.019
[5]	Han Tao. Microstructure research and practice based of improving reducibility of sinter in Xuan steel[J]. Sintering and Pelletizing, 2018,43(6):49−53. (韩涛. 提升宣钢烧结矿还原性的微结构研究与实践[J]. 烧结球团, 2018,43(6):49−53.
[6]	Liu Ran, Wang Longhao, Yan Zhaozhao, et al. Present situation of research on impact of chemical composition on low temperature reduction degradation of sinter[J]. Sintering and Pelletizing, 2018,43(1):1−5. (刘然, 王龙浩, 严照照, 等. 化学成分对烧结矿低温还原粉化影响的研究现状[J]. 烧结球团, 2018,43(1):1−5.
[7]	（任允芙. 钢铁冶金岩相矿相学[M]. 北京: 冶金工业出版社, 1982: 179−202.） Ren Yunfu. Petrographic of steel metallurgy[M]. Beijing: Metallurgical Industry Press, 1982: 179−202.
[8]	（郭玉峰. MgO抑制烧结矿低温还原粉化的成矿机理研究[D]. 北京: 北京科技大学, 2017.） Guo Yufeng. Effect of MgO on mineralization mechanism of sinter for inhibiting the low-temperature reduction degradation[D]. Beijing: University of Science and Technology Beijing, 2017.
[9]	Guo Xingmin, Zhu Li. Mineralogical composition and microstructure of high basicity sinters[J]. Iron and Steel, 2007,42(1):17−19. (郭兴敏, 朱利. 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. doi: 10.3321/j.issn:0449-749X.2007.01.004
[10]	Li Jian, Mao Xiaoming, Peng Xin. Effect of micro-characteristics on reduction degradation index of sinter[J]. Iron and Steel, 2018,53(8):15−19. (李建, 毛晓明, 彭新. 微观性能对烧结矿低温还原粉化的影响[J]. 钢铁, 2018,53(8):15−19.
[11]	Pimenta H P, Seshadri V. Influence of Al₂O₃ and TiO₂ on reduction degradation behavior of sinter and hematite at low temperatures[J]. Ironmaking and Steelmaking, 2002,29(3):175−179. doi: 10.1179/030192302225001992
[12]	Panigrahy S C, Verstraeten P, Dilewijns J. Influence of MgO addition on mineralogy of iron ore sinter[J]. Metallurgical and Materials Transactions B, 1984,15B:23−32.
[13]	Shigaki I, Sawada M, Gennai N. Increase in low-temperature reduction degradation of iron ore sinter due to hematite-alumina solid solution and columnar calcium ferrite[J]. Transactions of the Iron and Steel Institute of Japan, 1986,26:503−511. doi: 10.2355/isijinternational1966.26.503
[14]	Panigrahy S C, Verstraeten P, Dilewijns J. Effect of MgO addition on strength characteristics of iron ore sinter[J]. Ironmaking and Steelmaking, 1984,11:17−22.
[15]	Guo Yufeng, Guo Xingmin. Effect of MgO on low temperature reduction process of hematite fines sinter[J]. Journal of Iron and Steel Research, 2017,29(9):697−703. (郭玉峰, 郭兴敏. MgO对赤铁矿粉烧结产物低温还原过程的影响[J]. 钢铁研究学报, 2017,29(9):697−703.