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| Thermal compressive strength and its mechanism analysis of carbon-bearing pellet |
| YANG Le-biao，LI Jia-xin，YANG Jia-long，WEI Ru-fei，MENG Qing-min，LONG Hong-ming |
| （School of Metallurgical Engineering， Anhui University of Technology， Ma’anshan 243002， Anhui， China） |
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Abstract In order to study the thermal strength of carbon-bearing pellet， the thermal strength of carbon-bearing pellet was tested by the automatic thermal strength test equipment. The effects of reduction temperature，[n(C)/n(O)]and reduction time on the thermal strength of carbon-bearing pellets were investigated by orthogonal test， and the experimental results calculated and analyzed According to the single factor control variable， the experiment to study the compressive strength of carbon-bearing pellet thermal and reducing compressive strength after cooling were conducted on the contrast. Then the thermal strength mechanisms of carbon-bearing pellets were analyzed by XRD and thermodynamics theory. It is founded that the variation trend of thermal strength of carbon-bearing pellet in 950-1 250℃ is a process of decreasing first and then increasing. At about 1050 ℃， the thermal strength of carbon-bearing pellet reaches to the lowest， then the thermal strength began to rebound with the increase of metallic iron content. The[Rt，][Rn(C)/n(O)，][RT]are 67.33， 33.80 and 9.09， respectively， based on the factor range that is the effect of the reduction temperature >[n(C)/n(O)]> the reduction time. The results show that under the conditions with the same[n(C)/n(O)]and reduction time， the compressive strength of the reduction pellets after cooling is different from the thermal strength With the same reduction temperature and time， the variation trend of the strength of reduction pellets after cooling is consistent with the thermal strength.
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Received: 17 January 2017
Published: 29 September 2017
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| [1] |
汪琦.铁矿含碳球团技术[M].北京:冶金工业出版社, 2005:24-30.
|
| [1] |
汪琦.铁矿含碳球团技术[M].北京:冶金工业出版社, 2005:24-30.
|
| [2] |
WANG qi.Technology of iron ore pellets containing carbon[M].beijing: Metallurgical industry press, 2005:24-30.
|
| [2] |
WANG qi.Technology of iron ore pellets containing carbon[M].beijing: Metallurgical industry press, 2005:24-30.
|
| [3] |
孙波, 李家新, 龙红明等.粘结剂对尘泥含碳球团的影响[J].烧结球团, 2014, 39(2):32-36
|
| [3] |
孙波, 李家新, 龙红明等.粘结剂对尘泥含碳球团的影响[J].烧结球团, 2014, 39(2):32-36
|
| [4] |
SUN Bo, Li jia xin, edt.Effect of binders on strength of dust and sludge carbon-containing dry pellets[J].Sintering and Pelletizing, 2014, 39(2):32-36
|
| [4] |
SUN Bo, Li jia xin, edt.Effect of binders on strength of dust and sludge carbon-containing dry pellets[J].Sintering and Pelletizing, 2014, 39(2):32-36
|
| [5] |
Hirokazu Konishi.[J].ISIJ.International, 2010, 50(3):386-389
|
| [5] |
Hirokazu Konishi.[J].ISIJ.International, 2010, 50(3):386-389
|
| [6] |
朱炳秀, 魏国, 姜鑫, 沈峰满.褐铁矿含碳球团的爆裂特性研究[A].烧结球团, 2012, 37(2):36-40
|
| [6] |
朱炳秀, 魏国, 姜鑫, 沈峰满.褐铁矿含碳球团的爆裂特性研究[A].烧结球团, 2012, 37(2):36-40
|
| [7] |
ZHU Bing-xiu, WEI Guo, JIANG Xin, SHEN Feng-man.Study on Cracking Characteristics of Limonite-coal Pellet [A]. Sintering and Pelletizing, 2012, 37(2):36-40
|
| [7] |
ZHU Bing-xiu, WEI Guo, JIANG Xin, SHEN Feng-man.Study on Cracking Characteristics of Limonite-coal Pellet [A]. Sintering and Pelletizing, 2012, 37(2):36-40
|
| [8] |
CyroTAKANO and MarceloBredaMOURAO, .Comparison of High Temperature Reducing Pellets Produced from Sintering Plant [J].ISIJ International, 2001, 41(2):22-26
|
| [8] |
CyroTAKANO and MarceloBredaMOURAO, .Comparison of High Temperature Reducing Pellets Produced from Sintering Plant [J].ISIJ International, 2001, 41(2):22-26
|
| [9] |
吴铿, 齐渊洪.含碳球团的还原性和还原冷却后的强度[J].北京科技大学学报, 2000, 22(2):101-104
|
| [9] |
吴铿, 齐渊洪.含碳球团的还原性和还原冷却后的强度[J].北京科技大学学报, 2000, 22(2):101-104
|
| [10] |
WU jian, Qi yuan hong.Strength after reduction and reduction of carbon containing pellets[J].JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, 2000, 22(2):101-104
|
| [10] |
WU jian, Qi yuan hong.Strength after reduction and reduction of carbon containing pellets[J].JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING, 2000, 22(2):101-104
|
| [11] |
张旭, 张建良, 郭豪等.含碳球团生产工艺参数优化及固结机理研究[J].过程工程学报, 2009, 9(z1):25-30
|
| [11] |
张旭, 张建良, 郭豪等.含碳球团生产工艺参数优化及固结机理研究[J].过程工程学报, 2009, 9(z1):25-30
|
| [12] |
ZHANG Xu, ZHANG Jian-liang, GUO Hao.Experimental Study on Optimization of Technological Parameters and Agglomeration Mechanism of Carbon-contaming Pellets.[J].THE CHINESE JOURNAL OF PROCESS ENGINEERING, 2009, 9(1):25-30
|
| [13] |
高运明, 余方超.含碳球团高温抗压强度的实验测定[J].武汉科技大学学报, 2006, 29(2):109-111
|
| [12] |
ZHANG Xu, ZHANG Jian-liang, GUO Hao.Experimental Study on Optimization of Technological Parameters and Agglomeration Mechanism of Carbon-contaming Pellets.[J].THE CHINESE JOURNAL OF PROCESS ENGINEERING, 2009, 9(1):25-30
|
| [13] |
高运明, 余方超.含碳球团高温抗压强度的实验测定[J].武汉科技大学学报, 2006, 29(2):109-111
|
| [14] |
GAO Yun-ming, YU Fang-chao .Measurement of High Temperature Compressive Strength of Pellets Containing Carbon[J].JOURNAL OF WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGYNATURAL SCIENCE EDITION）, 2006, 29(2):109-111
|
| [14] |
GAO Yun-ming, YU Fang-chao .Measurement of High Temperature Compressive Strength of Pellets Containing Carbon[J].JOURNAL OF WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGYNATURAL SCIENCE EDITION）, 2006, 29(2):109-111
|
| [15] |
吴斌, 龙世刚等.含碳球团强度及金属化率的影响因素[J].安徽工业大学学报, 2007, 24(2):127-129
|
| [16] |
WU Bin, LONG Shi-gang, CAO Feng.Effect Factors of the Carbon-bearing Pellet Strengths and Metallization Rate[J].JOURNAL OF ANHUI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE), 2007, 24(2):127-129
|
| [15] |
吴斌, 龙世刚等.含碳球团强度及金属化率的影响因素[J].安徽工业大学学报, 2007, 24(2):127-129
|
| [17] |
周诚根, 张建良等.含碳球团预热后抗压强度变化的研究[J].烧结球团, 2013, 38(3):33-38
|
| [16] |
WU Bin, LONG Shi-gang, CAO Feng.Effect Factors of the Carbon-bearing Pellet Strengths and Metallization Rate[J].JOURNAL OF ANHUI UNIVERSITY OF TECHNOLOGY(NATURAL SCIENCE), 2007, 24(2):127-129
|
| [18] |
ZHOU Cheng-gen, ZHANG Jian-liang.edt.Study on Change of Compressive Strength of Carbon-containing Pellets after Preheating [J].Sintering and Pelletizing, 2013, 38(3):33-38
|
| [17] |
周诚根, 张建良等.含碳球团预热后抗压强度变化的研究[J].烧结球团, 2013, 38(3):33-38
|
| [19] |
方开泰, 马长兴.正交与均匀实验设计[M].科学出版社, 2001
|
| [18] |
ZHOU Cheng-gen, ZHANG Jian-liang.edt.Study on Change of Compressive Strength of Carbon-containing Pellets after Preheating [J].Sintering and Pelletizing, 2013, 38(3):33-38
|
| [19] |
方开泰, 马长兴.正交与均匀实验设计[M].科学出版社, 2001
|
| [20] |
FANG kai tai, Ma chang xin.Uniform experimental design and Orthogonal[M], 2001
|
| [21] |
牛永胜, 马永磊等.含碳球团配碳比的试验研究[J].河北冶金, 2001, (2):-
|
| [20] |
FANG kai tai, Ma chang xin.Uniform experimental design and Orthogonal[M], 2001
|
| [22] |
Niu yong shen, Ma yong lei.TEST AND RESEARCH OF CARBON FITTING RATIO OF CARBON-BEARING PELLET [J].HEBEI METALLURGY, 2001, (2):-
|
| [21] |
牛永胜, 马永磊等.含碳球团配碳比的试验研究[J].河北冶金, 2001, (2):-
|
| [23] |
付磊, 吕继平等.铁矿热压含碳球团高温抗压强度的实验研究.见:2008年全国炼铁生产技术会议暨炼铁年会文集（上册）[C].2008:10.
|
| [22] |
Niu yong shen, Ma yong lei.TEST AND RESEARCH OF CARBON FITTING RATIO OF CARBON-BEARING PELLET [J].HEBEI METALLURGY, 2001, (2):-
|
| [23] |
付磊, 吕继平等.铁矿热压含碳球团高温抗压强度的实验研究.见:2008年全国炼铁生产技术会议暨炼铁年会文集（上册）[C].2008:10.
|
| [24] |
FU lei, lv ji ping.edt. Experimental study on high temperature compressive strength of iron ore pellets containing carbon. In 2008 the national Ironmaking Technology Conference and ironmaking Conference(Book One) [C].2008:10.
|
| [24] |
FU lei, lv ji ping.edt. Experimental study on high temperature compressive strength of iron ore pellets containing carbon. In 2008 the national Ironmaking Technology Conference and ironmaking Conference(Book One) [C].2008:10.
|
| [25] |
王筱留, 钢铁冶金学[M].冶金工业出版社, 2000
|
| [25] |
王筱留, 钢铁冶金学[M].冶金工业出版社, 2000
|
| [26] |
WANG xiao liu.Ferrous metallurgy[M]. Metallurgical industry press, 2000
|
| [26] |
WANG xiao liu.Ferrous metallurgy[M]. Metallurgical industry press, 2000
|
| [27] |
Bonalde A, Henriquez A, Manrique M. Kinetic Analysis of the Iron Oxide Reduction Using Hydrogen-Carbon Monoxide Mixtures as Reducing Agent[J].ISIJ International, 2005, 45(9):1255-1255
|
| [28] |
魏汝飞, 李家新, 李杰民等.尘泥含碳球团弱氧化性气氛下的还原动力学[J].过程控制学报, 2011, 11(3):86-92
|
| [27] |
Bonalde A, Henriquez A, Manrique M. Kinetic Analysis of the Iron Oxide Reduction Using Hydrogen-Carbon Monoxide Mixtures as Reducing Agent[J].ISIJ International, 2005, 45(9):1255-1255
|
| [29] |
WEI Ru-fei, LI Jia-xin, LI Jie-min. Reduction Kinetics of Carbon-containing Pellets Made of Dust and Sludge under Weak Oxidizing Atmosphere[J].THE CHINESE JOURNAL OF PROCESS ENGINEERING, 2011, 11(3):86-92
|
| [28] |
魏汝飞, 李家新, 李杰民等.尘泥含碳球团弱氧化性气氛下的还原动力学[J].过程控制学报, 2011, 11(3):86-92
|
| [29] |
WEI Ru-fei, LI Jia-xin, LI Jie-min. Reduction Kinetics of Carbon-containing Pellets Made of Dust and Sludge under Weak Oxidizing Atmosphere[J].THE CHINESE JOURNAL OF PROCESS ENGINEERING, 2011, 11(3):86-92
|
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2017, Vol. 52 
