Column leaching of ion adsorption rare earth ore at low ammonium concentration
Ammonium sulfate ((NH4)2SO4) is currently the most commonly used leaching agent for the extraction of ion adsorption rare earth ore (IARE-ore) in industrial production. However, ammonium sulfate technology has been gradually restricted to use mainly due to its environmental damage, thus resulting in...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422008602 |
| _version_ | 1828357130214703104 |
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| author | Qiyuan Shi Yu Zhao Xiaoyu Meng Li Shen Guanzhou Qiu Xigang Zhang Hong Yu Xiao He Huajin He Hongbo Zhao |
| author_facet | Qiyuan Shi Yu Zhao Xiaoyu Meng Li Shen Guanzhou Qiu Xigang Zhang Hong Yu Xiao He Huajin He Hongbo Zhao |
| author_sort | Qiyuan Shi |
| collection | DOAJ |
| description | Ammonium sulfate ((NH4)2SO4) is currently the most commonly used leaching agent for the extraction of ion adsorption rare earth ore (IARE-ore) in industrial production. However, ammonium sulfate technology has been gradually restricted to use mainly due to its environmental damage, thus resulting in serious challenges in the IARE-ore industry. Based on the leaching mechanism of cation exchange, a high ammonium concentration is required in ammonium sulfate leaching. In addition, the anion of sulfate radicals has almost no ability to leach rare earth elements (REEs), which are also a component of environmental pollution. Therefore, it is important to reduce the concentration of the leaching agent, especially the ammonium concentration in the IARE-ore leaching process. In this work, ammonium citrate was used as a new leaching agent in IARE-ore leaching. The column leaching results showed that high REEs recovery can be obtained at relatively low ammonium concentration. Both of the cation and anion components of ammonium citrate were effective in the REEs leaching process, thus resulting in cooperative effects. A liquid/solid ratio of 4:1 and a pH of 6 were the appropriate conditions for the extraction of rare earth with ammonium citrate, while the appropriate pH for ammonium sulfate was 2. This work provides a new approach to solving the challenge of traditional ammonium technology by designing and changing the molecular structure of ammonium leaching agents. |
| first_indexed | 2024-04-14T03:10:32Z |
| format | Article |
| id | doaj.art-83256015678545ca9e9c5eee564a9a86 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-14T03:10:32Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-83256015678545ca9e9c5eee564a9a862022-12-22T02:15:36ZengElsevierJournal of Materials Research and Technology2238-78542022-07-011921352145Column leaching of ion adsorption rare earth ore at low ammonium concentrationQiyuan Shi0Yu Zhao1Xiaoyu Meng2Li Shen3Guanzhou Qiu4Xigang Zhang5Hong Yu6Xiao He7Huajin He8Hongbo Zhao9School of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, ChinaSchool of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, ChinaSchool of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, ChinaSchool of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China; Corresponding author.School of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, ChinaRising Nonferrous Metals Share Co., LTD., ChinaRising Nonferrous Metals Share Co., LTD., ChinaRising Nonferrous Metals Share Co., LTD., ChinaRising Nonferrous Metals Share Co., LTD., ChinaSchool of Minerals Processing & Bioengineering, Central South University, Changsha, Hunan, China; Key Lab of Biohydrometallurgy of Ministry of Education, Changsha, Hunan, China; Corresponding author.Ammonium sulfate ((NH4)2SO4) is currently the most commonly used leaching agent for the extraction of ion adsorption rare earth ore (IARE-ore) in industrial production. However, ammonium sulfate technology has been gradually restricted to use mainly due to its environmental damage, thus resulting in serious challenges in the IARE-ore industry. Based on the leaching mechanism of cation exchange, a high ammonium concentration is required in ammonium sulfate leaching. In addition, the anion of sulfate radicals has almost no ability to leach rare earth elements (REEs), which are also a component of environmental pollution. Therefore, it is important to reduce the concentration of the leaching agent, especially the ammonium concentration in the IARE-ore leaching process. In this work, ammonium citrate was used as a new leaching agent in IARE-ore leaching. The column leaching results showed that high REEs recovery can be obtained at relatively low ammonium concentration. Both of the cation and anion components of ammonium citrate were effective in the REEs leaching process, thus resulting in cooperative effects. A liquid/solid ratio of 4:1 and a pH of 6 were the appropriate conditions for the extraction of rare earth with ammonium citrate, while the appropriate pH for ammonium sulfate was 2. This work provides a new approach to solving the challenge of traditional ammonium technology by designing and changing the molecular structure of ammonium leaching agents.http://www.sciencedirect.com/science/article/pii/S2238785422008602Ion adsorption rare earthLow ammonium concentrationCooperative effectNew leaching agent |
| spellingShingle | Qiyuan Shi Yu Zhao Xiaoyu Meng Li Shen Guanzhou Qiu Xigang Zhang Hong Yu Xiao He Huajin He Hongbo Zhao Column leaching of ion adsorption rare earth ore at low ammonium concentration Journal of Materials Research and Technology Ion adsorption rare earth Low ammonium concentration Cooperative effect New leaching agent |
| title | Column leaching of ion adsorption rare earth ore at low ammonium concentration |
| title_full | Column leaching of ion adsorption rare earth ore at low ammonium concentration |
| title_fullStr | Column leaching of ion adsorption rare earth ore at low ammonium concentration |
| title_full_unstemmed | Column leaching of ion adsorption rare earth ore at low ammonium concentration |
| title_short | Column leaching of ion adsorption rare earth ore at low ammonium concentration |
| title_sort | column leaching of ion adsorption rare earth ore at low ammonium concentration |
| topic | Ion adsorption rare earth Low ammonium concentration Cooperative effect New leaching agent |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422008602 |
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