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STRUCTURAL CONTROL OF NA(2)TIO(3) IN PRE-TREATING NATURAL RUTILE ORE BY ALKALI ROASTING FOR TIO2 PRODUCTION
Meng, Fancheng1,2; Liu, Yahui1; Chu, Jinlong1; Wang, Weijing1,2; Qi, Tao1
2014-08-01
Source PublicationCANADIAN JOURNAL OF CHEMICAL ENGINEERING
ISSN0008-4034
Volume92Issue:8Pages:1346-1352
Abstract

To improve the use of natural rutile ore with fine particle size and high contents of MgO and CaO in China, a novel pre-treatment method of natural rutile ore by NaOH roasting to prepare -Na2TiO3 for TiO2 production was proposed. -Na2TiO3 is a stable by-product that can lead to serious caking in the reactor and low titanium yield. Thus, structural control in alkali roasting is necessary. The influence of particle size of natural rutile ore, NaOH-to-ore mass ratio, roasting temperature and roasting time on the crystal forms of Na2TiO3 was systematically investigated. The optimized reaction parameters were as follows: average particle size of natural rutile ore, -9.2 mu m; NaOH-to-rutile mass ratio, 1.2; roasting temperature, 550 degrees C; and roasting time, 70min. In these conditions, the titanium conversion and the fraction of -Na2TiO3 exceeded 99.5% and 98%, respectively. Moreover, the addition of H2O or as-prepared partial -Na2TiO3 as crystal seeds into the reaction system could prepare the roasting product with -Na2TiO3 as its main phase using -45 mu m (-325mesh) natural rutile ore.

KeywordTio2 Production Natural Rutile Alkali Roasting Structural Control Crystal Form
SubtypeArticle
Subject AreaEngineering
WOS HeadingsScience & Technology ; Technology
DOI10.1002/cjce.21994
Indexed BySCI
Language英语
WOS KeywordHydrothermal Synthesis ; Sodium-hydroxide ; Barium-titanate ; Titanium Slag ; Decomposition ; Nanoparticles ; Temperature ; Activation ; Pigment ; Na2tio3
Funding ProjectMajor Program of the 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] ; Key Research Program of the Chinese Academy of Sciences [KGZD-EW-201-2] ; Natural Science Foundation of China [51004091, 51104139, 21006115, 21106167] ; China Postdoctoral Science Foundation [2012M510552, 2013T60175]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000340281900003
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/15246
Collection研究所(批量导入)
Corresponding AuthorQi, Tao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Meng, Fancheng,Liu, Yahui,Chu, Jinlong,et al. STRUCTURAL CONTROL OF NA(2)TIO(3) IN PRE-TREATING NATURAL RUTILE ORE BY ALKALI ROASTING FOR TIO2 PRODUCTION[J]. CANADIAN JOURNAL OF CHEMICAL ENGINEERING,2014,92(8):1346-1352.
APA Meng, Fancheng,Liu, Yahui,Chu, Jinlong,Wang, Weijing,&Qi, Tao.(2014).STRUCTURAL CONTROL OF NA(2)TIO(3) IN PRE-TREATING NATURAL RUTILE ORE BY ALKALI ROASTING FOR TIO2 PRODUCTION.CANADIAN JOURNAL OF CHEMICAL ENGINEERING,92(8),1346-1352.
MLA Meng, Fancheng,et al."STRUCTURAL CONTROL OF NA(2)TIO(3) IN PRE-TREATING NATURAL RUTILE ORE BY ALKALI ROASTING FOR TIO2 PRODUCTION".CANADIAN JOURNAL OF CHEMICAL ENGINEERING 92.8(2014):1346-1352.
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