论文部分内容阅读
铀在水溶液中能以U~(4,)U~(5+,)U~(6+,)氧化状态存在,但由于U~(4+)矿物的不溶解性,在溶液中U~(4+)浓度通常接近于零。因此,铀的搬运是以U~(6+),也可能是U~(5+)上的形式进行的。同时在大多数铀矿床的形成过程中,氧化还原反应是关键.在溶液中铀与其它离子形成络合物能大大地增强铀的溶解和搬运。图1表明在最常见的复合介质CO_3~(2-)存在的情况下形成铀矿物。U~(6+)
Uranium can exist in the oxidation state of U ~ (4,) U ~ (5 +,) U ~ (6+) in aqueous solution. However, due to the insolubility of U ~ (4+) 4+) The concentration is usually close to zero. Therefore, uranium transport is based on U ~ (6+), but also U ~ (5+) on the form. At the same time, the redox reaction is the key in the formation of most uranium deposits, and the formation of complexes of uranium with other ions in solution can greatly enhance the dissolution and handling of uranium. Figure 1 shows the formation of uranium minerals in the presence of CO_3 ~ (2-), the most common composite medium. U ~ (6+)