砂岩型铀矿铀源岩中活性铀浸出方法研究

通过对砂岩型铀矿铀源岩样品中活性铀的浸出试验，选择了相对合理的浸取剂，讨论了样品粒度、固液比、称样量、温度、时间等因素对铀浸出率的影响，拟定了一个适用性广，操作条件较宽松、质量稳定的浸取体系和分析方案。该分析方案对不同类型铀源岩中活性铀的浸出率测量相对标准差小10％（n=11）。

Study on leaching method of mobile uranium from U-source rocks

Based on the leaching experiments on mobile uranium from U-source rock samples of sandstone type U-deposits,the reasonable leaching reagent has been selected,and factors which may effect the leaching rate of mobile uranium such as the grain-size of the sample,the solid-liquid ratio,the sample weight,the temperature,and the leaching time etc,have been discussed,and a widely applicable and quality-stable leaching system and analytic scheme have been developed.The relative standard deviation of the method for the measurement of leaching rate of mobile uranium from U-source rocks of different types is less than 10%(n=11).