Numerical Simulation on Blast Furnace Operation with Hot Burden Charging

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	Numerical Simulation on Blast Furnace Operation with Hot Burden Charging
其他题名	Numerical Simulation on Blast Furnace Operation with Hot Burden Charging
	Guo Tonglai; Chu Mansheng; Liu Zhenggen; Wang Hongtao
	2014
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	21 期号:8 页码:729-736
摘要	Blast furnace operation with hot burden charging was numerically simulated to preliminarily analyze its advantages and disadvantages. Multi-fluid blast furnace model was utilized to simulate hot burden charging operations under the conditions that the charging temperatures of pellet and coke were supposed separately or simultaneously as 800 degrees C. The results showed that, with hot burden charging, the furnace top temperature significantly increased in comparison to the conventional operation with cold burden charging. However, in-furnace temperature decreased, which decelerated the reduction rate of ferrous burdens. The concentrations of reducing gases were decreased in the furnace. The height of cohesive zone shifted downwards. When the charging temperatures of pellet and coke were simultaneously 800 degrees C (PC800), coke rate, fuel rate and carbon emission rate were decreased by 13. 4, 22. 1 and 19. 25 kg center dot t(-1), respectively. The ratio of ore to coke, solid burden charging rate and hot metal productivity were increased by 4. 79%, 7. 55 kg center dot s(-1) and 6. 38%, respectively. Heat taken away by top gas and energy consumption per ton hot metal were increased by 68. 97% and 6. 40%, respectively. Generally speaking, hot burden charging was adverse to energy utilization of blast furnace.
其他摘要	Blast furnace operation with hot burden charging was numerically simulated to preliminarily analyze its advantages and disadvantages. Multi-fluid blast furnace model was utilized to simulate hot burden charging operations under the conditions that the charging temperatures of pellet and coke were supposed separately or simultaneously as 800 ℃. The results showed that, with hot burden charging, the furnace top temperature significantly increased in comparison to the conventional operation with cold burden charging. However, in-furnace temperature decreased, which decelerated the reduction rate of ferrous burdens. The concentrations of reducing gases were decreased in the furnace. The height of cohesive zone shifted downwards. When the charging temperatures of pellet and coke were simultaneously 800 ℃ (PC800), coke rate, fuel rate and carbon emission rate were decreased by 13.4, 22.1 and 19.25 kg·t~(-1), respectively. The ratio of ore to coke, solid burden charging rate and hot metal productivity were increased by 4.79%, 7.55 kg·s~(-1) and 6.38%, respectively. Heat taken away by top gas and energy consumption per ton hot metal were increased by 68.97% and 6.40%, respectively. Generally speaking, hot burden charging was adverse to energy utilization of blast furnace.
关键词	NATURAL-GAS INJECTION MATHEMATICAL-MODEL OXYGEN FLOW blast furnace hot burden charging multi-fluid theory energy consumption
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Program for New Century Excellent Talents in University of China]
CSCD记录号	CSCD:5215224
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/143117
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Guo Tonglai,Chu Mansheng,Liu Zhenggen,et al. Numerical Simulation on Blast Furnace Operation with Hot Burden Charging[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2014,21(8):729-736.
APA	Guo Tonglai,Chu Mansheng,Liu Zhenggen,&Wang Hongtao.(2014).Numerical Simulation on Blast Furnace Operation with Hot Burden Charging.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,21(8),729-736.
MLA	Guo Tonglai,et al."Numerical Simulation on Blast Furnace Operation with Hot Burden Charging".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 21.8(2014):729-736.