Production of high purity thorium oxide from complex ores leach liquor
This paper investigates a method for separation and purification of thorium from leach liquors containing rare-earth elements (REE). Iron, which causes problems in the stage of thorium extracting, was first removed by using Adogen 464 solvent. Thorium was extracted...
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| Format: | Article |
| Language: | English |
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General Directorate of Mineral Research and Exploration
2021-04-01
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| Series: | Bulletin of the Mineral Research and Exploration |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/pub/bulletinofmre/issue/56453/709316 |
| _version_ | 1797913875465633792 |
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| author | Zümrüt Alkan Akan Gülmez Hasan Akçay Çiğdem Kara Haydar Güneş Ayşe Erdem |
| author_facet | Zümrüt Alkan Akan Gülmez Hasan Akçay Çiğdem Kara Haydar Güneş Ayşe Erdem |
| author_sort | Zümrüt Alkan |
| collection | DOAJ |
| description | This paper investigates a method for separation and purification of thorium from leach liquors containing rare-earth elements (REE). Iron, which causes problems in the stage of thorium extracting, was first removed by using Adogen 464 solvent. Thorium was extracted with 30% D2EHPA-in kerosene with 1/3 organic/aqueous ratio and stoichiometry of the thorium-D2EHPA complex was calculated as 1:2.6 from slope analysis. After the extraction, LREE and HREE were scrubbed from the extracted organic with 0.25 M H₂SO₄ and 6 M HCl, respectively. Thorium oxalate was precipitated by oxalic acid and calcined at 1,050 °C. It was, after calcination, determined that purity of thorium oxide is 99.23%, based on the ICP-OES analysis. |
| first_indexed | 2024-04-10T12:18:13Z |
| format | Article |
| id | doaj.art-cf2721e3778e43b08de7c49aca1df2c0 |
| institution | Directory Open Access Journal |
| issn | 0026-4563 |
| language | English |
| last_indexed | 2024-04-10T12:18:13Z |
| publishDate | 2021-04-01 |
| publisher | General Directorate of Mineral Research and Exploration |
| record_format | Article |
| series | Bulletin of the Mineral Research and Exploration |
| spelling | doaj.art-cf2721e3778e43b08de7c49aca1df2c02023-02-15T16:15:36ZengGeneral Directorate of Mineral Research and ExplorationBulletin of the Mineral Research and Exploration0026-45632021-04-0116416411010.19111/bulletinofmre.70931676Production of high purity thorium oxide from complex ores leach liquorZümrüt Alkan0Akan Gülmez1Hasan Akçay2Çiğdem Kara3Haydar Güneş4Ayşe Erdem5General Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyGeneral Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyGeneral Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyGeneral Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyGeneral Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyGeneral Directorate of Mineral Research and Exploration, Mineral Analysis and Technology Department, 06530, Ankara, TurkeyThis paper investigates a method for separation and purification of thorium from leach liquors containing rare-earth elements (REE). Iron, which causes problems in the stage of thorium extracting, was first removed by using Adogen 464 solvent. Thorium was extracted with 30% D2EHPA-in kerosene with 1/3 organic/aqueous ratio and stoichiometry of the thorium-D2EHPA complex was calculated as 1:2.6 from slope analysis. After the extraction, LREE and HREE were scrubbed from the extracted organic with 0.25 M H₂SO₄ and 6 M HCl, respectively. Thorium oxalate was precipitated by oxalic acid and calcined at 1,050 °C. It was, after calcination, determined that purity of thorium oxide is 99.23%, based on the ICP-OES analysis.https://dergipark.org.tr/tr/pub/bulletinofmre/issue/56453/709316thoriumsolventextractionleach liquor |
| spellingShingle | Zümrüt Alkan Akan Gülmez Hasan Akçay Çiğdem Kara Haydar Güneş Ayşe Erdem Production of high purity thorium oxide from complex ores leach liquor Bulletin of the Mineral Research and Exploration thorium solvent extraction leach liquor |
| title | Production of high purity thorium oxide from complex ores leach liquor |
| title_full | Production of high purity thorium oxide from complex ores leach liquor |
| title_fullStr | Production of high purity thorium oxide from complex ores leach liquor |
| title_full_unstemmed | Production of high purity thorium oxide from complex ores leach liquor |
| title_short | Production of high purity thorium oxide from complex ores leach liquor |
| title_sort | production of high purity thorium oxide from complex ores leach liquor |
| topic | thorium solvent extraction leach liquor |
| url | https://dergipark.org.tr/tr/pub/bulletinofmre/issue/56453/709316 |
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