对于量非常大而铀浓度又低的溶液,采用沉淀法以铀酸盐形式提取铀的方法是不适宜的;而由于萃取剂和有机溶剂损失大,又会污染环境以及产生乳化等原因,则采用萃取法也有困难。因此,较有前途的是所谓离子浮选法。本文系用12至16个碳原子烷烃的溴烷基吡啶的 For solutions with very large amounts and low uranium concentrations, it is not appropriate to use the precipitation method to extract uranium from uranium salts. However, due to the large loss of extractants and organic solvents, the pollution of the environment and the emulsification, There are also difficulties with extraction. Therefore, the more promising is the so-called ionic flotation method. In this paper, the use of alkanes of 12 to 16 carbon atoms of alkyl bromide