Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores
The beneficiation methods for Ethiopian Kenticha pegmatite–spodumene ores were assessed through mineralogical and quantitative analyses with X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence (EDXRF). The tantalite in the upper zone of the Kenticha pegmatite–spodumene deposit is 58.7wt...
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| Format: | Journal Article |
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Beijing Keji Daxue
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54369 |
| _version_ | 1848759354960904192 |
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| author | Gebreyohannes, B. del Rosario Alberto, V. Yimam, A. Woldetinsae, G. Tadesse, Bogale |
| author_facet | Gebreyohannes, B. del Rosario Alberto, V. Yimam, A. Woldetinsae, G. Tadesse, Bogale |
| author_sort | Gebreyohannes, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The beneficiation methods for Ethiopian Kenticha pegmatite–spodumene ores were assessed through mineralogical and quantitative analyses with X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence (EDXRF). The tantalite in the upper zone of the Kenticha pegmatite–spodumene deposit is 58.7wt% higher than that in the inner zone. XRD analysis revealed that the upper zone is dominated by manganocolumbite, whereas the inner zone is predominantly tantalite-Mn. Repeated cleaning and beneficiation of the upper-zone ore resulted in concentrate compositions of 57.34wt% of Ta 2 O 5 and 5.41wt% of Nb 2 O 5 . Washing the tantalite concentrates using 1vol% KOH and 1 M H 2 SO 4 led to the removal of thorium and uranium radioactive oxides from the concentrate. The findings of this study suggest that the beneficiation and alkaline washing of Kenticha pegmatite–spodumene ores produce a high-grade export-quality tantalite concentrate with negligible radioactive oxides. |
| first_indexed | 2025-11-14T09:58:33Z |
| format | Journal Article |
| id | curtin-20.500.11937-54369 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:58:33Z |
| publishDate | 2017 |
| publisher | Beijing Keji Daxue |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-543692017-09-13T16:12:07Z Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores Gebreyohannes, B. del Rosario Alberto, V. Yimam, A. Woldetinsae, G. Tadesse, Bogale The beneficiation methods for Ethiopian Kenticha pegmatite–spodumene ores were assessed through mineralogical and quantitative analyses with X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence (EDXRF). The tantalite in the upper zone of the Kenticha pegmatite–spodumene deposit is 58.7wt% higher than that in the inner zone. XRD analysis revealed that the upper zone is dominated by manganocolumbite, whereas the inner zone is predominantly tantalite-Mn. Repeated cleaning and beneficiation of the upper-zone ore resulted in concentrate compositions of 57.34wt% of Ta 2 O 5 and 5.41wt% of Nb 2 O 5 . Washing the tantalite concentrates using 1vol% KOH and 1 M H 2 SO 4 led to the removal of thorium and uranium radioactive oxides from the concentrate. The findings of this study suggest that the beneficiation and alkaline washing of Kenticha pegmatite–spodumene ores produce a high-grade export-quality tantalite concentrate with negligible radioactive oxides. 2017 Journal Article http://hdl.handle.net/20.500.11937/54369 10.1007/s12613-017-1456-8 Beijing Keji Daxue restricted |
| spellingShingle | Gebreyohannes, B. del Rosario Alberto, V. Yimam, A. Woldetinsae, G. Tadesse, Bogale Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title | Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title_full | Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title_fullStr | Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title_full_unstemmed | Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title_short | Alternative beneficiation of tantalite and removal of radioactive oxides from Ethiopian Kenticha pegmatite–spodumene ores |
| title_sort | alternative beneficiation of tantalite and removal of radioactive oxides from ethiopian kenticha pegmatite–spodumene ores |
| url | http://hdl.handle.net/20.500.11937/54369 |