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Controlling the formation of Na2ZrSiO5 in alkali fusion process for zirconium oxychloride production
Liu, Jingchong1,2,3; Song, Jing1,2; Qi, Tao1,2; Zhang, Changqiao3; Qu, Jingkui1,2
2016
Source PublicationADVANCED POWDER TECHNOLOGY
ISSN0921-8831
Volume27Issue:1Pages:1-8
Abstract

In the alkali fusion process for the production of zirconium oxychloride, the formation of the water insoluble by-product, Na2ZrSiO5, largely affects NaOH recovery and results in the formation of silicon slags. Thus, controlling Na2ZrSiO5 formation is necessary. In this paper, we studied the effects of roasting temperature, NaOH/zircon mole ratio, and particle size of zircon sand on Na2ZrSiO5 formation. The optimum reaction parameters, when the roasting time was 1 h, were as follows: >= 95 mu m average particle size of zircon sand, 6:1 NaOH/zircon mole ratio, and 750 degrees C roasting temperature. To avoid an uneven roasting temperature during alkali fusion, the use of a rotary kiln reactor is recommended. The amount of Na2ZrSiO5 was significantly decreased under these optimum conditions, and the content of Na2O was reduced from 7.049% to only 2.21% after three water-leaching cycles. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

KeywordZrocl2 Center Dot 8h(2)o Production Zircon Sand Na2zrsio5 Alkali Roasting
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.apt.2015.08.005
Indexed BySCI
Language英语
WOS KeywordPart i ; Decomposition ; Concentrate ; Sand ; Naoh
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Science Foundation for Distinguished Young Scholars of China(51125018) ; Jiangxi Jing'an Hi-technology Co., Ltd.
WOS IDWOS:000370677400001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/20624
Collection研究所(批量导入)
Corresponding AuthorQu, Jingkui
Affiliation1.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Shandong Univ, Sch Chem & Chem Engn, Shandong 250100, Peoples R China
Recommended Citation
GB/T 7714
Liu, Jingchong,Song, Jing,Qi, Tao,et al. Controlling the formation of Na2ZrSiO5 in alkali fusion process for zirconium oxychloride production[J]. ADVANCED POWDER TECHNOLOGY,2016,27(1):1-8.
APA Liu, Jingchong,Song, Jing,Qi, Tao,Zhang, Changqiao,&Qu, Jingkui.(2016).Controlling the formation of Na2ZrSiO5 in alkali fusion process for zirconium oxychloride production.ADVANCED POWDER TECHNOLOGY,27(1),1-8.
MLA Liu, Jingchong,et al."Controlling the formation of Na2ZrSiO5 in alkali fusion process for zirconium oxychloride production".ADVANCED POWDER TECHNOLOGY 27.1(2016):1-8.
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