Hydrometallurgical removal of uranium and thorium from Ethiopian tantalite ore

• Autorzy: Cheru Mulugeta Sisay , Albertodel Rosario Alberto Velázquez , Yimam Abubeker , Tadesse Bogale , Berhe Gebreyohannes Goitom

Identyfikatory

DOI

10.5277/ppmp18153

• Języki publikacji: EN

Abstrakty

EN

This study focused on the leaching of uranium and thorium from a high grade Ethiopian tantalite ore using sulfuric acid. The effects of variables such as acid concentration, temperature and leaching time were studied. In general, the leaching efficiency of uranium increases with increasing temperature from 100 to 300°C whereas the opposite trend was observed for thorium. The amount of uranium leached increased from 69.1% at contact time of 1 hr to 88.6% when the tantalite ore was leached for 3 hrs. On the other hand, for the experiments conditions considered in this study, the leaching behavior of uranium and thorium did not change significantly with varying sulphuric acid concentration from 70 to 90 wt%. Overall, the highest dissolution of uranium and thorium were achieved at 100°C, 70 wt% H2SO4 concentration and 1 hr contact time.

Słowa kluczowe

EN

leaching; tantalite; uranium; thorium

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 2
• Strony: 448--457
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Cheru Mulugeta Sisay

• School of Materials Science and Engineering, Jimma Institute of Technology, Jimma University, PO Box 378, Jimma, Ethiopia

autor

Albertodel Rosario Alberto Velázquez

• Federal Technical Vocational and Education Training Institute, FTVETI, Department of Manufacturing Technology, Addis Ababa, Ethiopia

autor

Yimam Abubeker

• School of Chemical and Bio Engineering, AAiT, Addis Ababa University, PO Box 1176, Addis Ababa, Ethiopia

autor

Tadesse Bogale

• Department of Mining Engineering and Metallurgical Engineering, Western Australia School of Mines, Curtin University, Egan St, Kalgoorlie, WA 6430, Australia

autor

Berhe Gebreyohannes Goitom

• Department of Chemistry, College of Natural and Computational Science, Mekelle University, PO Box 823, Mekelle, Ethiopia

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).