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Novel and efficient purification of scrap Al-Mg alloys using supergravity technology
Meng, Long1,2; Wang, Zhe1; Wang, Lu1; Guo, Lei1; Guo, Zhancheng1
2021
Source PublicationWASTE MANAGEMENT
ISSN0956-053X
Volume119Pages:22-29
AbstractSupergravity technology is an efficient method for the separation of trace elements from Al-Mg alloys made of their scraps. This study investigated the enrichment and separation behavior of impurities from Al-Mg alloy using supergravity technology under various conditions. After supergravity enrichment, nonmetallic inclusions and precipitated intermetallic compounds were concentrated at the bottom of the samples, and the enrichment degree positively correlated with the gravity coefficient. High-purity Al-Mg alloys was obtained with efficient impurity removal from the alloy melt of the scraps by filtration in supergravity fields. Improving the gravity coefficient benefited the recoveries of the Al and Mg but had little influence on the purity of the obtained Al-Mg alloy. Although the recoveries of the Al and Mg increased slightly with increasing the separation temperature, the removal rates of the metallic impurities were relatively low at elevated temperatures. At the temperature of 500 degrees C, gravity coefficient of 600, and separation time of 1 min, 91.6% and 90.1% of Al and Mg were recovered, respectively. Their corresponding mass fractions in the filtered Al-Mg alloy were 99.2 wt%. An amplified experimental centrifugal separation apparatus was also designed for purifying the alloys on an engineering scale. The results indicate that supergravity technology is feasible on an industrial scale and that it can be potentially employed as a separation and purification process. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordScrap Al-Mg alloy Supergravity Purification Impurity removal Separation
DOI10.1016/j.wasman.2020.09.027
Language英语
WOS KeywordFUNCTIONALLY GRADED MATERIALS ; MOLTEN ALUMINUM ; CENTRIFUGAL ; REMOVAL ; FABRICATION ; INCLUSIONS ; MAGNESIUM ; RECOVERY ; CU
Funding ProjectNational Natural Science Foundations of China[51704022] ; National Natural Science Foundations of China[52004264] ; Fundamental Research Funds for the Central Universities[FRF-TP-20-018A3]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundations of China ; Fundamental Research Funds for the Central Universities
WOS IDWOS:000599766200003
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42880
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Zhe; Guo, Zhancheng
Affiliation1.Univ Sci & Technol Beijing, State Key Lab Adv Met, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Meng, Long,Wang, Zhe,Wang, Lu,et al. Novel and efficient purification of scrap Al-Mg alloys using supergravity technology[J]. WASTE MANAGEMENT,2021,119:22-29.
APA Meng, Long,Wang, Zhe,Wang, Lu,Guo, Lei,&Guo, Zhancheng.(2021).Novel and efficient purification of scrap Al-Mg alloys using supergravity technology.WASTE MANAGEMENT,119,22-29.
MLA Meng, Long,et al."Novel and efficient purification of scrap Al-Mg alloys using supergravity technology".WASTE MANAGEMENT 119(2021):22-29.
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