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Recovery of Valuable Metals and NaCl from Cobalt-Rich Crust and Industrial Waste Salt via Roasting Coupling Technology
Ju, Jinrong1,2,3; Feng, Yali1; Li, Haoran2; Li, Xin1,2,3; Zhang, Qian1
2021-11-19
Source PublicationJOURNAL OF SUSTAINABLE METALLURGY
ISSN2199-3823
Pages14
AbstractOcean cobalt crust has attracted much attention due to the high economic potential of various metals. A large amount of industrial waste salt is usually filled or deposited without treatment, causing severe environmental pollution and waste of salt resources. In this work, to recover valuable metals (Cu, Co, Ni, and Mn) and NaCl from cobalt-rich crust and industrial waste salt and diminish energy consumption, a roasting coupling technology has been proposed and process and mechanism were investigated. In the reduction roasting process, the organic matter in industrial waste salt was continuously pyrolyzed, producing a large amount of reducing gases such as CO, CH4, and H-2, which could react with the MnO2 and Fe2O3 in the cobalt-rich crust to destroy its original crystal structure. The results revealed that the reduction process of cobalt-rich crust was gradually completed from the surface layer of particles to the core. The NaCl and Cu, Co, Ni, and Mn in the roasting residues can be recovered by water leaching and acid leaching, respectively. Under the mass ratio of industrial waste salt to ocean cobalt-rich crust of 7:5, the roasting temperature of 973.15 K, and the roasting time of 25 min, the leaching efficiency of Cu, Co, Ni, and Mn reached 96.03%, 97.98%, 98.52%, and 99.74%, respectively, and the 98.49% recovery rate of NaCl could be achieved. The present process may simultaneously realize the extraction of metals from the cobalt-rich crust and the resource utilization of waste salt. [GRAPHICS] .
KeywordOcean cobalt-rich crust Industrial waste salt Reduction roasting Pyrolysis Metals leaching Recovery of NaCl
DOI10.1007/s40831-021-00464-x
Language英语
WOS KeywordFERROMANGANESE NODULES ; ORGANIC-MATTER ; MANGANESE ; REDUCTION ; PYROLYSIS
Funding Projectlong-term special project for National[JS-KTHT-2019-01] ; key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
WOS Research AreaScience & Technology - Other Topics ; Metallurgy & Metallurgical Engineering
WOS SubjectGreen & Sustainable Science & Technology ; Metallurgy & Metallurgical Engineering
Funding Organizationlong-term special project for National ; key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
WOS IDWOS:000720579500001
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/51055
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Yali
Affiliation1.Univ Sci & Technol Beijing, Civil & Resource Engn Sch, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Biochem Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ju, Jinrong,Feng, Yali,Li, Haoran,et al. Recovery of Valuable Metals and NaCl from Cobalt-Rich Crust and Industrial Waste Salt via Roasting Coupling Technology[J]. JOURNAL OF SUSTAINABLE METALLURGY,2021:14.
APA Ju, Jinrong,Feng, Yali,Li, Haoran,Li, Xin,&Zhang, Qian.(2021).Recovery of Valuable Metals and NaCl from Cobalt-Rich Crust and Industrial Waste Salt via Roasting Coupling Technology.JOURNAL OF SUSTAINABLE METALLURGY,14.
MLA Ju, Jinrong,et al."Recovery of Valuable Metals and NaCl from Cobalt-Rich Crust and Industrial Waste Salt via Roasting Coupling Technology".JOURNAL OF SUSTAINABLE METALLURGY (2021):14.
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