配加铁矿粉对铁焦微观结构及性能的影响

doi:10.13228/j.boyuan.issn0449-749x.20160045

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Abstract In order to clarify the effect of iron ore fines which were added during coking process on the coke properties， three different iron ore blend ratios (0，5% and 10%) were used to make iron-coke. I-type drum、thermogravimetric analyser、SEM、XRD and optical microscope were used to investigate the properties of iron-coke， such as strength， reactivity， microstructure， crystallite structure and optical texture. Moreover， the method of Coats-Redfern was used to calculate the kinetics parameters of the gasification reaction. The results showed that it could increase the cold strength and reactivity of iron-coke by adding iron ore fines into gas coal. With the increase of iron ore blend ratio， the stacking height[Lc]value of iron-coke and the gphitization degree decreased. The pore size of iron-coke became smaller as well. The density of Fe atom attaching to the surface of the pore increased， and a piece of iron region was found. The isotropic and mosaic structure in coke was reduced， while the residual carbon structure was increased. According to the kinetics analysis， the activation energy of iron-coke with 0，5% and 10% iron ore fines blend ratio was 228.4，235.5 and 256.7 kJ/mol， respectively. Meanwhile， it was found that the apparent activation energy and pre-exponential factor had a kinetic compensation effect.

Key words： gas coal iron ore fines gasification reaction strength reactivity optical texture kinetics

Received: 01 February 2016 Published: 29 August 2016

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TF 52

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	ZHANG Jian-Liang
	GUO Jian
	YU An-Wei
	XU Shou
	ZHENG Chang-Le
	XU Run-Sheng

Cite this article:

ZHANG Jian-Liang,GUO Jian,YU An-Wei等. Effect of iron ore fines addition on microstructure and properties of iron-coke[J]. Iron and Steel, 2016, 51(9): 22-29.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20160045 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I9/22

[1]	庹必阳. 适当配加高反应性焦炭对高炉冶炼过程影响的基础研究[D]. 北京: 北京科技大学, 2013: 21-22.TUO Bi-yang. Basic Study on influence of properly adding high reactivity coke on blast furnace ironmaking process[D]. Beijing: University of science and technology beijing, 2013: 21-22.
[2]	徐志荣. JFE钢铁公司完成高炉使用铁焦阶段性试验［N］. 世界金属导报, 2013-5-14(B01).XU Zhi-rong. Periodical test of iron-coke used in blast furnace completed in JFE steel company[N].World metals, 2013-5-14(B01).
[3]	Nomura S, Terashima H, Sato E, et al. Some fundamental aspects of highly reactive iron coke production[J]. ISIJ International,2007, 47(6): 823-830.
[3]	Nomura S, Terashima H, Sato E, et al. Some fundamental aspects of highly reactive iron coke production[J]. ISIJ International,2007, 47(6): 823-830.
[4]	Higuchi K, Nomura S, Kunitomo K, et al. Enhancement of low-temperature gasification and reduction by using iron-coke in laboratory scale tests[J]. ISIJ International, 2011, 51 (8): 1308–1315.
[4]	Higuchi K, Nomura S, Kunitomo K, et al. Enhancement of low-temperature gasification and reduction by using iron-coke in laboratory scale tests[J]. ISIJ International, 2011, 51 (8): 1308–1315.
[5]	Nomura S, Kitaguchi H, Yamaguchi K. The characteristics of catalyst-coated highly reactive coke[J]. ISIJ International, 2007, 47(2): 245-253.
[5]	Nomura S, Kitaguchi H, Yamaguchi K. The characteristics of catalyst-coated highly reactive coke[J]. ISIJ International, 2007, 47(2): 245-253.
[6]	Natsui S, Shibasaki R, Tatsuya K. Effect of high reactivity coke for mixed charge in ore layer on reaction behavior of each particle in blast furnace[J]. ISIJ International, 2013, 53(10): 1770-1778.
[7]	张慧轩, 毕学工, 史世庄,等. 炼焦配煤中添加铁矿石对焦炭性能的影响[J]. 武汉科技大学学报, 2014, 37(2): 91-96.ZHANG Hui-xuan, BI Xue-gong, SHI Shi-zhuang, et al. Influence of iron ore addition into coal blend for coke-making on coke properties[J]. Journal of Wuhan University of Science and Technology, 2014, 37(2): 91-96.
[8]	史世庄, 孙超祺, 毕学工,等. 铁矿粉配比对铁焦性能影响的试验研究[J]. 钢铁, 2014, 49(5): 7-12.SHI Shi-zhuang, SUN Chao-qi, BI Xue-gong, et al. Experimental research of effect of iron ore powders ratio on ferro-coke quality[J]. Iron & Steel, 2014, 49(5): 7-12.
[9]	史世庄, 董晴雯, 毕学工,等. 炼焦工艺条件对铁焦性能影响的试验[J]. 钢铁, 2015, 50(4): 8-12.SHI Shi-zhuang, DONG Qing-wen, BI Xue-gong, et al. Experiment of coking process conditions on iron-coke properties[J]. Iron & Steel, 2015, 50(4): 8-12.
[10]	李鹏, 毕学工, 史世庄,等. 铁焦气化反应行为的实验室研究与分析[J]. 钢铁研究学报, 2015, 27(12): 10-15.LI Peng, BI Xue-gong, SHI Shi-zhuang, et al. Research and analysis on gasification reaction behavior of iron coke in laboratory[J]. Journal of iron and steel research, 2015, 27(12): 10-15.
[11]	史世庄, 鲁帅, 毕学工,等. 铁焦初始反应温度的降低及其机理[J]. 钢铁, 2015, 50(7): 15-19.SHI Shi-zhuang, LU Shuai, BI Xue-gong, et al. Decreasing of reaction beginning temperature of iron coke and its mechanism[J]. Iron & Steel, 2015, 50(7): 15-19.
[12]	毕学工, 马毅瑞, 张慧轩,等. 混装铁焦对人造富矿还原行为的影响[J]. 钢铁, 2014, 49(11): 9-13.BI Xue-gong, MA Yi-rui, ZHANG Hui-xuan, et al. Effect of iron coke mixed charging on agglomerates reduction behavior[J]. Iron & Steel, 2014, 49(11): 9-13.
[13]	马毅瑞. 铁焦和铁矿石混合反应行为热力学与实验室研究[D]. 武汉: 武汉科技大学, 2014: 30-35.MA Yi-rui. Thermodynamy and laboratory study of the reaction behavior of the mixed charging composed of iron coke and agglomerates[D]. Wuhan: Wuhan University of Science and Technology, 2014: 30-35.
[14]	张龙龙. 神府煤—Ⅲ制备的含铁型焦的物理化学基础研究[D]. 太原:太原理工大学, 2015: 43-46.ZHANG Long-long. The basic research of physical chemistry aspects about carbon iron composite made of shenfu-Ⅲ[D]. Taiyuan: Taiyuan University of Technology, 2015: 43-46.
[6]	Natsui S, Shibasaki R, Tatsuya K. Effect of high reactivity coke for mixed charge in ore layer on reaction behavior of each particle in blast furnace[J]. ISIJ International, 2013, 53(10): 1770-1778.
[15]	蔡湄夏, 郭豪, 张建良,等. 铁氧化物对焦炭溶损反应的影响[J]. 钢铁研究学报, 2009, 21(7): 8-12.CAI Mei-xia, GUO Hao, ZHANG Jian-liang, et al. Influence of iron oxide on coke solution loss reaction[J]. Journal of iron and steel research, 2009, 21(7): 8-12.
[7]	张慧轩, 毕学工, 史世庄,等. 炼焦配煤中添加铁矿石对焦炭性能的影响[J]. 武汉科技大学学报, 2014, 37(2): 91-96.ZHANG Hui-xuan, BI Xue-gong, SHI Shi-zhuang, et al. Influence of iron ore addition into coal blend for coke-making on coke properties[J]. Journal of Wuhan University of Science and Technology, 2014, 37(2): 91-96.
[16]	李文, 李保庆. 用热重技术研究煤焦的燃烧特性[J]. 煤炭转化, 1996, 19(3): 76-81.LI Wen, LI Bao-qing. Research char combustion properties by thermalgravity analysis[J]. Coal conversion, 1996, 19(3): 76-81.
[8]	史世庄, 孙超祺, 毕学工,等. 铁矿粉配比对铁焦性能影响的试验研究[J]. 钢铁, 2014, 49(5): 7-12.SHI Shi-zhuang, SUN Chao-qi, BI Xue-gong, et al. Experimental research of effect of iron ore powders ratio on ferro-coke quality[J]. Iron & Steel, 2014, 49(5): 7-12.
[9]	史世庄, 董晴雯, 毕学工,等. 炼焦工艺条件对铁焦性能影响的试验[J]. 钢铁, 2015, 50(4): 8-12.SHI Shi-zhuang, DONG Qing-wen, BI Xue-gong, et al. Experiment of coking process conditions on iron-coke properties[J]. Iron & Steel, 2015, 50(4): 8-12.
[10]	李鹏, 毕学工, 史世庄,等. 铁焦气化反应行为的实验室研究与分析[J]. 钢铁研究学报, 2015, 27(12): 10-15.LI Peng, BI Xue-gong, SHI Shi-zhuang, et al. Research and analysis on gasification reaction behavior of iron coke in laboratory[J]. Journal of iron and steel research, 2015, 27(12): 10-15.
[11]	史世庄, 鲁帅, 毕学工,等. 铁焦初始反应温度的降低及其机理[J]. 钢铁, 2015, 50(7): 15-19.SHI Shi-zhuang, LU Shuai, BI Xue-gong, et al. Decreasing of reaction beginning temperature of iron coke and its mechanism[J]. Iron & Steel, 2015, 50(7): 15-19.
[12]	毕学工, 马毅瑞, 张慧轩,等. 混装铁焦对人造富矿还原行为的影响[J]. 钢铁, 2014, 49(11): 9-13.BI Xue-gong, MA Yi-rui, ZHANG Hui-xuan, et al. Effect of iron coke mixed charging on agglomerates reduction behavior[J]. Iron & Steel, 2014, 49(11): 9-13.
[13]	马毅瑞. 铁焦和铁矿石混合反应行为热力学与实验室研究[D]. 武汉: 武汉科技大学, 2014: 30-35.MA Yi-rui. Thermodynamy and laboratory study of the reaction behavior of the mixed charging composed of iron coke and agglomerates[D]. Wuhan: Wuhan University of Science and Technology, 2014: 30-35.
[14]	张龙龙. 神府煤—Ⅲ制备的含铁型焦的物理化学基础研究[D]. 太原:太原理工大学, 2015: 43-46.ZHANG Long-long. The basic research of physical chemistry aspects about carbon iron composite made of shenfu-Ⅲ[D]. Taiyuan: Taiyuan University of Technology, 2015: 43-46.
[15]	蔡湄夏, 郭豪, 张建良,等. 铁氧化物对焦炭溶损反应的影响[J]. 钢铁研究学报, 2009, 21(7): 8-12.CAI Mei-xia, GUO Hao, ZHANG Jian-liang, et al. Influence of iron oxide on coke solution loss reaction[J]. Journal of iron and steel research, 2009, 21(7): 8-12.
[16]	李文, 李保庆. 用热重技术研究煤焦的燃烧特性[J]. 煤炭转化, 1996, 19(3): 76-81.LI Wen, LI Bao-qing. Research char combustion properties by thermalgravity analysis[J]. Coal conversion, 1996, 19(3): 76-81.
[17]	Cumming J W. Reactivity assessment of coals via a weighted mean activation energy[J]. Fuel, 1984, 63(10): 1436-1440.
[18]	闫云飞, 张磊, 张力,等. 氧气浓度对劣质煤掺混生活污泥燃烧特性的影响[J]. 燃料化学学报, 2013, 41(4): 430-435.YAN Yun-fei, ZHANG Lei, ZHANG Li, et al. Influence of oxygen concentration on combustion characteristics of inferior coal and sludge mixture[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 430-435.
[17]	Cumming J W. Reactivity assessment of coals via a weighted mean activation energy[J]. Fuel, 1984, 63(10): 1436-1440.
[18]	闫云飞, 张磊, 张力,等. 氧气浓度对劣质煤掺混生活污泥燃烧特性的影响[J]. 燃料化学学报, 2013, 41(4): 430-435.YAN Yun-fei, ZHANG Lei, ZHANG Li, et al. Influence of oxygen concentration on combustion characteristics of inferior coal and sludge mixture[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 430-435.