Decomposition Kinetics of Titania Slag in Eutectic NaOH-NaNO3 System
Wang, Dong1,2; Wang, Zhi1,2; Qi, Tao1,2; Wang, Lina1,2; Xue, Tianyan1,2
2016-02-01
发表期刊METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
卷号47期号:1页码:666-674
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.
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1007/s11663-015-0491-y
收录类别SCI
语种英语
关键词[WOS]PANZHIHUA ILMENITE ; SODIUM-HYDROXIDE ; ACID
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
项目资助者National Natural Science Foundation of China(51090380 ; National Basic Research Program of China (973 Program)(2013CB632604 ; National Science Foundation for Distinguished Young Scholars of China(51125018) ; 51374191 ; 2013CB632601) ; 51104139)
WOS记录号WOS:000368692300058
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/20595
专题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
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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.
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