Studies on Treatment of Uranium Ores. I : Leaching of Uranium Ore from the Matsuiwa Mine
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概要
- 論文の詳細を見る
Studies were made of several processes of extracting uranium with the uraniferrous ore from the Ryusei pit, Matsuiwa Mine, Miyagi Prefecture, assaying 0.081 per cent U. Three series of experiments were carried out as follows : (1) Pressure oxidation leaching of the uranium ore in carbonate solutions containing gaseous oxygen. (2) Leaching the roasted ore in sulfuric acid. (3) Pressure and atmospheric oxidation leachings of the ore in acids. The results obtained show that the atmospheric oxidation leaching with dilute sulfuric acid was an attractive method for extraction of uranium from such low grade ore as this. By this method over 96 per cent of uranium, together with some copper and from 0.3 to 2 per cent of iron were extracted at 60℃ in 6 hours. The same results were obtained with nitric acid and the atmospheric leaching in water with oxygen recovered over 80 per cent of uranium.
- 東北大学の論文
著者
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KIGOSHI Akiichi
The Research Institute of Mineral Dressing and Metallurgy
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SUDO Kingo
The Research Institute of Mineral Dressing and Metallurgy
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