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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
Source PublicationMETALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
ISSN1073-5615
Volume47Issue:1Pages:666-674
AbstractThe 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1007/s11663-015-0491-y
Indexed BySCI
Language英语
WOS KeywordPANZHIHUA ILMENITE ; SODIUM-HYDROXIDE ; ACID
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational 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 IDWOS:000368692300058
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20595
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.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
Recommended Citation
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.
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