Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore
In this study, Rb leaching from a low-grade aluminosilicate mineral in the H2SO4–CaF2 system at low temperature was investigated. The results showed that parameters such as the H2SO4 concentration, CaF2 dosage, and temperature affected the leaching of Rb. Residue characterization and kinetic analysi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785421004920 |
| _version_ | 1818657065989570560 |
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| author | Wenlin Nie Shuming Wen Yongjun Xian Yirong Li Guang Han Yaxiong Jiang |
| author_facet | Wenlin Nie Shuming Wen Yongjun Xian Yirong Li Guang Han Yaxiong Jiang |
| author_sort | Wenlin Nie |
| collection | DOAJ |
| description | In this study, Rb leaching from a low-grade aluminosilicate mineral in the H2SO4–CaF2 system at low temperature was investigated. The results showed that parameters such as the H2SO4 concentration, CaF2 dosage, and temperature affected the leaching of Rb. Residue characterization and kinetic analysis showed that the gypsum formed on the unreacted particles at lower acid concentrations (0.5–5 mol/L) did not hinder the diffusion of the leaching agents, indicating that the leaching rate was controlled by chemical reaction. When the acid concentration was increased to 5 mol/L, the unreacted particles were covered with a large amount of anhydrite, which was characterized as a pyknotic film. This indicated that leaching was controlled by a combination of chemical reaction and diffusion of the leaching agent through the product layer. |
| first_indexed | 2024-12-17T03:35:34Z |
| format | Article |
| id | doaj.art-171c1436cbbe4ac59372cf21da428588 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-17T03:35:34Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-171c1436cbbe4ac59372cf21da4285882022-12-21T22:05:08ZengElsevierJournal of Materials Research and Technology2238-78542021-07-011315461554Leaching rubidium from a low-grade rubidium-bearing aluminosilicate oreWenlin Nie0Shuming Wen1Yongjun Xian2Yirong Li3Guang Han4Yaxiong Jiang5State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, China; Department of Mathematics and Physics, West Yunnan University, Lincang, 677000, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, China; Corresponding author.Kunming Metallurgy College, Kunming, 650033, China; Corresponding author.State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaState Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaIn this study, Rb leaching from a low-grade aluminosilicate mineral in the H2SO4–CaF2 system at low temperature was investigated. The results showed that parameters such as the H2SO4 concentration, CaF2 dosage, and temperature affected the leaching of Rb. Residue characterization and kinetic analysis showed that the gypsum formed on the unreacted particles at lower acid concentrations (0.5–5 mol/L) did not hinder the diffusion of the leaching agents, indicating that the leaching rate was controlled by chemical reaction. When the acid concentration was increased to 5 mol/L, the unreacted particles were covered with a large amount of anhydrite, which was characterized as a pyknotic film. This indicated that leaching was controlled by a combination of chemical reaction and diffusion of the leaching agent through the product layer.http://www.sciencedirect.com/science/article/pii/S2238785421004920RubidiumAluminosilicateFluorideLeaching mechanismKinetics |
| spellingShingle | Wenlin Nie Shuming Wen Yongjun Xian Yirong Li Guang Han Yaxiong Jiang Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore Journal of Materials Research and Technology Rubidium Aluminosilicate Fluoride Leaching mechanism Kinetics |
| title | Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore |
| title_full | Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore |
| title_fullStr | Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore |
| title_full_unstemmed | Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore |
| title_short | Leaching rubidium from a low-grade rubidium-bearing aluminosilicate ore |
| title_sort | leaching rubidium from a low grade rubidium bearing aluminosilicate ore |
| topic | Rubidium Aluminosilicate Fluoride Leaching mechanism Kinetics |
| url | http://www.sciencedirect.com/science/article/pii/S2238785421004920 |
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