<報文>ウラン鉱処理に関する研究(第1報) : 松岩鉱よりのウラン抽出

概要

論文の詳細を見る
Studies were made of several processes for 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 the uranium ore in carbonate solutions containing gaeous oxygen or a chemical oxidizing agent, (2) Leaching the roasted ore in sulfuric acid, (3) Pressure and atmosphcric oxidation teachings of the ore in acids. The results obtained show that the atmospheric oxidation teaching 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℃ for 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
1958-07-30