Evaluation of the acid leaching technique for recovery of U3O8 and ThO2 in niobium/tantalum slag
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Universidade Federal de Minas Gerais
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Artigo de periódico
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This study presented the recovery of uranium oxide and thorium oxide from aluminothermic slag from the metallurgical processing of columbite – a niobium/tantalum mineral with the presence of U3O8 and ThO2 – from a mining-industrial facility. The methodology consisted of sampling, comminution, and leaching using sulfuric acid. The head sample showed contents of (1.78 + 0.14) % for U3O8 and (3.66 + 0.04) % for ThO2. The metallurgical recovery reached values above 80% for the uranium oxide and above 70% for the thorium oxide for pH < 1.5 and process time greater than eight hours.
Abstract
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Química, Química metalúrgica, Ácido sulfúrico, Urânio, Minérios de urânio
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Uranium oxide, Thorium oxide, Metallurgical recovery
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https://www.bjrs.org.br/revista/index.php/REVISTA/article/view/2165