Kinetics of Oxidation Reaction for Magnetite Pellets

IMR OpenIR

	Kinetics of Oxidation Reaction for Magnetite Pellets
其他题名	Kinetics of Oxidation Reaction for Magnetite Pellets
	Liang Ruquan; Yang Shuo; Yan Fusheng; He Jicheng
	2013
发表期刊	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN	1006-706X
卷号	20 期号:9 页码:16-20
摘要	An experiment for the oxidation process of single magnetite pellet and theoretical analysis based on modified unreacted core shrinking (MUCS) model were carried out, and the controlling mechanisms of the initial and developing reactions were examined, respectively. From the study of the initial reaction, it was found that the chemical reaction of surface is the controlling step of the overall reaction when the temperature is up to about 750 K, while the mass transfer through the gaseous boundary layer dominates the reaction rate when the temperature is above 750 K. As the reaction developing within the pellet, the mass transfer through the produced layer becomes the controlling step. In addition, the effects of reaction conditions (such as oxygen concentration, temperature) on the fractional oxidation of magnetite pellet were determined.
其他摘要	An experiment for the oxidation process of single magnetite pellet and theoretical analysis based on modified unreacted core shrinking (MUCS) model were carried out, and the controlling mechanisms of the initial and developing reactions were examined, respectively. From the study of the initial reaction, it was found that the chemical reaction of surface is the controlling step of the overall reaction when the temperature is up to about 750 K, while the mass transfer through the gaseous boundary layer dominates the reaction rate when the temperature is above 750 K. As the reaction developing within the pellet, the mass transfer through the produced layer becomes the controlling step. In addition, the effects of reaction conditions (such as oxygen concentration, temperature) on the fractional oxidation of magnetite pellet were determined.
关键词	magnetite pellet shaft furnace kinetics oxidation reaction controlling step
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China]
CSCD记录号	CSCD:4941339
引用统计	被引频次：4[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/153998
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	Liang Ruquan,Yang Shuo,Yan Fusheng,et al. Kinetics of Oxidation Reaction for Magnetite Pellets[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2013,20(9):16-20.
APA	Liang Ruquan,Yang Shuo,Yan Fusheng,&He Jicheng.(2013).Kinetics of Oxidation Reaction for Magnetite Pellets.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,20(9),16-20.
MLA	Liang Ruquan,et al."Kinetics of Oxidation Reaction for Magnetite Pellets".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 20.9(2013):16-20.