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Alumina recovery from spent Bayer liquor by methanol
Zhang Ying1,2; Zheng Shi-li1; Du Hao1; Wang Shao-na1; Peng Ying3; Zhang Yi1; Zheng, SL
2010-05-01
Source PublicationTRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
ISSN1003-6326
Volume20Issue:增刊: 1Pages:S165-S168
AbstractDecomposition of sodium aluminate solution is the key step for alumina production; however, approximately only 55% alumina yield is obtained by seeded precipitation. So, it is difficult to obtain sodium aluminate solution with high caustic ratio. In this study, a method was explored to recover alumina from spent Bayer liquor by deep decomposition with methanol. A variety of conditions, including reaction temperature, reaction time, methanol amount and seed coefficient were elaborately investigated. The results showed that the appropriate conditions were 1:1 in volume ratio of methanol to spent Bayer liquor, more than 1.0 seed coefficient and in a 40 degrees C water bath for 24 h. By characterizing through XRD, the crystal products were found to be Al(OH)(3). With this method, the molar ratio of Na(2)O to Al(2)O(3) of the spent liquor can be increased from about 3.0 to 10.0 due to the recovery of alumina, which is beneficial for the treatment of red mud.
KeywordSpent Bayer Liquor Methanol Alumina Decomposition
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000278706500032
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6164
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorZheng, SL
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Beijing Gen Res Inst, Beijing Tungsten & Molybdenum Mat Factory, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Zhang Ying,Zheng Shi-li,Du Hao,et al. Alumina recovery from spent Bayer liquor by methanol[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2010,20(增刊: 1):S165-S168.
APA Zhang Ying.,Zheng Shi-li.,Du Hao.,Wang Shao-na.,Peng Ying.,...&Zheng, SL.(2010).Alumina recovery from spent Bayer liquor by methanol.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,20(增刊: 1),S165-S168.
MLA Zhang Ying,et al."Alumina recovery from spent Bayer liquor by methanol".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 20.增刊: 1(2010):S165-S168.
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