摘要
钱二块铀矿岩性为高碳酸盐、富含黏土矿物的低渗透砂岩型,在地浸采铀过程中经常发生地层堵塞现象。根据地浸采铀的机理,针对钱二块采铀的注液特点,选用001×7阳离子交换树脂脱除采铀注液中可与CO32-和HCO3-结合而形成沉淀的主要阳离子Mg2+和Ca2+,从而避免了MgCO3和CaCO3沉淀的生成。试验结果表明,该技术效果良好,可以达到地浸铀矿层防堵的目的。
Qianerkuai uranium deposit contains sandstone uranium ore which can be exploited high carbonates and rich clay. by in-situ leaching technique. It is a low penetrability During the pilot production, the blinding phenomena occurred because of its low penetrability. According to the in-situ uranium leaching mechanism, the 001 ×7 cation exchange resin was selected to remove Ca^2＋ and Mg^2＋ from the injection liquid, which are the main cations to form the precipitation. The experiment results show that the removal effect of Ca^2＋ and Mg^2＋ is excellent. This technique can be applied in in-situ leaching of uranium.
出处
《铀矿冶》
CAS
2009年第2期66-69,共4页
Uranium Mining and Metallurgy
关键词
铀矿
地浸采铀
防堵
离子交换
uranium deposit
in-situ leaching of uranium
blinding-preventing
ion exchange
