512矿床老采区铀矿石管状浸铀试验

Tubula Leaching Uranium Test of the Old Mining Area Uranium Sandstore of 512 Deposit

为探讨地浸老采区铀浸出特征,选取512矿床11-3老采区铀矿石进行管状浸铀试验,通过蒸馏水和酸法两个阶段的浸出试验,探讨残留于含矿层中难浸铀的浸出特征。试验表明,酸法浸出溶浸液Eh值及铀浓度较饱水浸出阶段有大幅提高,且沿溶浸液流向,铀浓度不断累积。酸法浸出能够提高溶浸液氧化性,对提高难溶铀的浸出效率具有重要意义。

In order to discuss the uranium leaching characteristics in old mining area, the paper selects No.512 deposit of 11-3 old mining area of uranium ore to conduct tubular uranium leaching test. Through the two stages of leaching of distilled water and acid method, to investigate the residual ore leaching characteristics of containing refractory uranium. Tests show that compared with full water leaching stage, the Eh value and the concentration of uraniumin acid leaching solution immersion were greatly improved. And along the leaching solution flow, the concentration of uranium accumulated. Acid leaching can improve the oxidizability of solution, and has an important significance to improve the leaching efficiency of insoluble uranium.