Ultra High Temperature Rare Earth Metal Extraction by Electrolysis
Current industrial methods used for rare earth element (REE) extraction involve: 1) ore enrichment, 2) separation of rare earth oxides (REOs), 3) chlorination or hydrofluorination, and 4) individual electrowinning of REEs from a molten halide electrolyte. The complexity of REE extraction is inherite...
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| Format: | Article |
| Language: | en_US |
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Wiley Blackwell
2016
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| Online Access: | http://hdl.handle.net/1721.1/102334 https://orcid.org/0000-0002-5480-4421 https://orcid.org/0000-0002-2594-0264 https://orcid.org/0000-0003-1520-8552 |
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| author | Lambotte, Guillaume Allanore, Antoine Nakanishi, Bradley Rex |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Lambotte, Guillaume Allanore, Antoine Nakanishi, Bradley Rex |
| author_sort | Lambotte, Guillaume |
| collection | MIT |
| description | Current industrial methods used for rare earth element (REE) extraction involve: 1) ore enrichment, 2) separation of rare earth oxides (REOs), 3) chlorination or hydrofluorination, and 4) individual electrowinning of REEs from a molten halide electrolyte. The complexity of REE extraction is inherited from their electronic configuration. Recently, molten oxide electrolysis (MOE) has been used to produce reactive metals directly from their oxides, e.g. titanium. As a single-step alternative to processes 3) and 4), or laboratory has investigated rare earth extraction by MOE. A key challenge is to find a molten electrolyte more stable than REOs. One possibility is to use binaries of REOs directly as a solvent. We have, therefore, developed two experimental approaches for studying molten REOs at temperatures exceeding 2200°C. The present work reports the most recent experimental results obtained with La[subscript 2]0[subscript 3]-Y[subscript 2]0[subscript 3]. Those promising results demonstrate potential for operating with molten REOs and refine the underlying materials challenge for electrodes to enable metal recovery. |
| first_indexed | 2024-09-23T11:39:16Z |
| format | Article |
| id | mit-1721.1/102334 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:39:16Z |
| publishDate | 2016 |
| publisher | Wiley Blackwell |
| record_format | dspace |
| spelling | mit-1721.1/1023342022-10-01T05:03:35Z Ultra High Temperature Rare Earth Metal Extraction by Electrolysis Lambotte, Guillaume Allanore, Antoine Nakanishi, Bradley Rex Massachusetts Institute of Technology. Department of Materials Science and Engineering Allanore, Antoine Nakanishi, Bradley Rex Lambotte, Guillaume Current industrial methods used for rare earth element (REE) extraction involve: 1) ore enrichment, 2) separation of rare earth oxides (REOs), 3) chlorination or hydrofluorination, and 4) individual electrowinning of REEs from a molten halide electrolyte. The complexity of REE extraction is inherited from their electronic configuration. Recently, molten oxide electrolysis (MOE) has been used to produce reactive metals directly from their oxides, e.g. titanium. As a single-step alternative to processes 3) and 4), or laboratory has investigated rare earth extraction by MOE. A key challenge is to find a molten electrolyte more stable than REOs. One possibility is to use binaries of REOs directly as a solvent. We have, therefore, developed two experimental approaches for studying molten REOs at temperatures exceeding 2200°C. The present work reports the most recent experimental results obtained with La[subscript 2]0[subscript 3]-Y[subscript 2]0[subscript 3]. Those promising results demonstrate potential for operating with molten REOs and refine the underlying materials challenge for electrodes to enable metal recovery. United States. Office of Naval Research (Contract N00014-11-1-0657) 2016-04-29T15:57:06Z 2016-04-29T15:57:06Z 2015-02 Article http://purl.org/eprint/type/JournalArticle 9781119078302 9781119093244 http://hdl.handle.net/1721.1/102334 Nakanishi, Bradley R., Guillaume Lambotte, and Antoine Allanore. “Ultra High Temperature Rare Earth Metal Extraction by Electrolysis.” Rare Metal Technology 2015 (February 20, 2015): 177–183. https://orcid.org/0000-0002-5480-4421 https://orcid.org/0000-0002-2594-0264 https://orcid.org/0000-0003-1520-8552 en_US http://dx.doi.org/10.1002/9781119093244.ch20 Rare Metal Technology 2015 Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Wiley Blackwell Prof. Allanore via Angie Locknar |
| spellingShingle | Lambotte, Guillaume Allanore, Antoine Nakanishi, Bradley Rex Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title | Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title_full | Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title_fullStr | Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title_full_unstemmed | Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title_short | Ultra High Temperature Rare Earth Metal Extraction by Electrolysis |
| title_sort | ultra high temperature rare earth metal extraction by electrolysis |
| url | http://hdl.handle.net/1721.1/102334 https://orcid.org/0000-0002-5480-4421 https://orcid.org/0000-0002-2594-0264 https://orcid.org/0000-0003-1520-8552 |
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