Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System

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	Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System
	Wang, Dong 1,2; Wang, Zhi 1,2; Qi, Tao 1,2; Wang, Lina 1,2; Xue, Tianyan 1,2
刊名	METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
	2016-02-01
卷号	47 期号:1 页码:666-674
ISSN号	1073-5615
英文摘要	The decomposition kinetics and mechanism of titania slag in eutectic NaOH-NaNO3 system were studied in the temperature range 623 K to 723 K (350 A degrees C to 450 A degrees C). Decomposed products were examined using X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. It has been identified that the main product is Na2TiO3 and the decomposition kinetics of titania slag followed a shrinking unreacted core model. It is proposed that the chemical reaction process was the rate determining step with apparent activation energy of 62.4 kJ/mol. NaNO3 was mainly acted as oxygen carrier and mass transport agent to lower the viscosity of the system. The purity of TiO2 obtained in the product was up to 99.3 pct. A flow diagram to produce TiO2 and to recycle the media was proposed.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
研究领域[WOS]	Materials Science ; Metallurgy & Metallurgical Engineering
关键词[WOS]	PANZHIHUA ILMENITE ; SODIUM-HYDROXIDE ; ACID
收录类别	SCI
语种	英语
WOS记录号	WOS:000368692300058
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/20595]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, 1 Bei Er Jie, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dong,Wang, Zhi,Qi, Tao,et al. Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System[J]. METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,2016,47(1):666-674.
APA	Wang, Dong,Wang, Zhi,Qi, Tao,Wang, Lina,&Xue, Tianyan.(2016).Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System.METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE,47(1),666-674.
MLA	Wang, Dong,et al."Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System".METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE 47.1(2016):666-674.