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Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process
Wang, Long1,2,3; Lu, Sujun1; Fan, Jiayuan3; Ma, Yutian1; Zhang, Juan1; Wang, Shiyang3; Pei, Xiaoyao3; Sun, Yuan3; Lv, Guozhi2; Zhang, Tingan2
Corresponding AuthorSun, Yuan(yuansun@imr.ac.cn) ; Zhang, Tingan(zta2000@163.net)
2022-07-01
Source PublicationSEPARATIONS
Volume9Issue:7Pages:14
AbstractSuperalloy scraps are deemed as potential unconventional sources of rare metals. In this study, an ultrasonic leaching method with a two-stage separation process was proposed. A series of Eh-pH diagrams for rare metals was constructed, and the results indicated that the leaching and separation process could be realized by adjusting the potential and pH values of leaching solutions. In the ultrasonic leaching process, results showed that the economic leaching percentages of Re, Ni, Co, Al, and Cr were 92.3%, 95.2%, 98.5%, 98.7%, and 97.5%, respectively. Compared with conventional leaching, ultrasonic leaching can improve the leaching percentages of rare metals by approximately 20%. In the two-stage separation process, the optimal recovery efficiencies of Al and Cr were 94.6% and 82.1% at a pH of 4.5, and Ni and Co were 99.5% and 98.3% at a pH of 7.5. With a two-stage precipitate process, rare metals can be efficiently recovered without generating any waste acid.
Keywordsuperalloy scraps Eh-pH diagram ultrasonic leaching passivation layer precipitates separation
Funding OrganizationState Key Laboratory of Comprehensive Utilization of Nickel and Cobalt Resources ; Chinese Academy of Sciences ; Science and technology project of Shen-Fu Reform and innovation Demonstration Zone ; Shenyang Science and Technology Plan ; National Natural Science Foundation of China ; National Key Research and Development Program of China
DOI10.3390/separations9070184
Indexed BySCI
Language英语
Funding ProjectState Key Laboratory of Comprehensive Utilization of Nickel and Cobalt Resources[E041A104Z1] ; Chinese Academy of Sciences[E055A101] ; Science and technology project of Shen-Fu Reform and innovation Demonstration Zone[2021JH15] ; Shenyang Science and Technology Plan[20-203-5-19] ; National Natural Science Foundation of China[U1710257] ; National Key Research and Development Program of China[2021YFB3700401]
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000833797600001
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174712
Collection中国科学院金属研究所
Corresponding AuthorSun, Yuan; Zhang, Tingan
Affiliation1.Jinchuan Grp Co Ltd, State Key Lab Comprehens Utilizat Nickel & Cobalt, Jinchang 737100, Peoples R China
2.Northeastern Univ, Key Lab Ecol Utilizat Multimetall Mineral, Minist Educ, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, Long,Lu, Sujun,Fan, Jiayuan,et al. Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process[J]. SEPARATIONS,2022,9(7):14.
APA Wang, Long.,Lu, Sujun.,Fan, Jiayuan.,Ma, Yutian.,Zhang, Juan.,...&Zhang, Tingan.(2022).Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process.SEPARATIONS,9(7),14.
MLA Wang, Long,et al."Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process".SEPARATIONS 9.7(2022):14.
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