CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
An environmentally friendly design for low-grade diasporic-bauxite processing
Ma, Shu-hua1; Wen, Zong-guo1; Chen, Ji-ning1; Zheng, Shi-li2; Ma, SH
2009-08-01
Source PublicationMINERALS ENGINEERING
ISSN0892-6875
Volume22Issue:9-10Pages:793-798
AbstractA new environmentally friendly design for low-grade diasporic-bauxite processing which is different from the Bayer and sintering processes was proposed in this paper. In the redesign of alumina production technology, a mixture of bauxite ore and sodium hydroxide solution was heated at a higher temperature for the purpose of complete decomposition of bauxite. The products were then extracted by water; the resulting sodium aluminate solution was further purified and used for the gibbsite precipitation, the residue being reacted with a caustic liquor to recover sodium oxide and alumina. The experimental results show that during the new process bauxite decomposition rates approach 100% and the residues can be easily recovered. When diasporic ores with mass ratio of alumina to silica of approximately 5:1 are treated, total alumina recovery efficiency of 86% and a sodium oxide presence below 1.5% in the final red mud will be achieved. This new design surpasses previous approaches in terms of high resource efficiency and low environmental impact. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordNon-ferrous Metallic Ores Digestion Environmental Mineral Economics
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.mineng.2009.02.007
Indexed BySCI
Language英语
WOS KeywordREVERSE FLOTATION ; ECO-EFFICIENCY ; REMOVAL ; IRON
WOS Research AreaEngineering ; Mineralogy ; Mining & Mineral Processing
WOS SubjectEngineering, Chemical ; Mineralogy ; Mining & Mineral Processing
WOS IDWOS:000268423500008
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6623
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorMa, SH
Affiliation1.Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Ma, Shu-hua,Wen, Zong-guo,Chen, Ji-ning,et al. An environmentally friendly design for low-grade diasporic-bauxite processing[J]. MINERALS ENGINEERING,2009,22(9-10):793-798.
APA Ma, Shu-hua,Wen, Zong-guo,Chen, Ji-ning,Zheng, Shi-li,&Ma, SH.(2009).An environmentally friendly design for low-grade diasporic-bauxite processing.MINERALS ENGINEERING,22(9-10),793-798.
MLA Ma, Shu-hua,et al."An environmentally friendly design for low-grade diasporic-bauxite processing".MINERALS ENGINEERING 22.9-10(2009):793-798.
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