Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system

IMR OpenIR

	Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system
其他题名	Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system
	Mu Wenning; Zhai Yuchun
	2010
发表期刊	TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN	1003-6326
卷号	20 期号:2 页码:330-335
摘要	A novel process was proposed for treating nickeliferous laterite ores with molten sodium hydroxide. The effect on silicon extraction caused by the factors, such as stirring speed, reaction temperature, particle size and NaOH-to-ore mass ratio, was investigated. The results show that increasing stirring speed, reaction temperature and NaOH-to-ore mass ratio while decreasing particle size increases silicon extraction rate. The desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system was described successfully by chemical reaction control model. The activation energy of the desiliconization process was found to be 44.01 kJ/mol, and the reaction rate based on a chemical reaction-controlled process can be expressed as: 1-(1-alpha)(1/3)=27.67exp-44 010/(RT)t.
其他摘要	A novel process was proposed for treating nickeliferous laterite ores with molten sodium hydroxide. The effect on silicon extraction caused by the factors, such as stirring speed, reaction temperature, particle size and NaOH-to-ore mass ratio, was investigated. The results show that increasing stirring speed, reaction temperature and NaOH-to-ore mass ratio while decreasing particle size increases silicon extraction rate. The desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system was described successfully by chemical reaction control model. The activation energy of the desiliconization process was found to be 44.01 kJ/mol, and the reaction rate based on a chemical reaction-controlled process can be expressed as: 1-(1-α)~(1/3)= 27.67exp-44 010/(RT)t.
关键词	NICKEL DEPOSIT nickeliferous laterite ores sodium hydroxide silicon dioxide kinetics desiliconization
收录类别	CSCD
语种	英语
资助项目	[National Basic Research Program of China]
CSCD记录号	CSCD:3843212
引用统计	被引频次：15[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/149016
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	Mu Wenning,Zhai Yuchun. Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2010,20(2):330-335.
APA	Mu Wenning,&Zhai Yuchun.(2010).Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,20(2),330-335.
MLA	Mu Wenning,et al."Desiliconization kinetics of nickeliferous laterite ores in molten sodium hydroxide system".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 20.2(2010):330-335.