含铀硼镁铁矿硫酸浸出液除铀的研究

辽宁省翁泉沟含铀硼镁铁矿的硫酸浸出液主要成分是Ｈ３ＢＯ３和ＭｇＳＯ５，并含有少量Ｆｅ＾３＋和ＵＯ＾２＋２。本研究用ＭｇＯ调节溶液的ｐＨ值，进行了含铁与不含铁７种溶液的除铀试验。当溶液不含Ｆｅ＾３＋时，靠ＵＯ＾２＋２自身沉淀后，溶液中Ｕ浓度高于硫酸出液中的Ｕ含量，无法将铀除去。

Studies on Removing Uranium from Digested Solutions of Uranium Bearing Ascharite-Magnetite Syngenetic Mineral by Sulfuric Acid in Wengquegou Liaoning Province

The digested solution of uranium bearing ascharite-magnetite syngenetic mineral in Wengquegou by sulfuric acid contains a large amount of H3BO3 and MgSO4 and a little Fe3+(after oxidation with NaClO3)and UO22+.The experiments of removing uranium from solutions containing Fe3+and without Fe3+,after adjusting their pH with MgO,were carried out.After precipitation of UO22+ from solution without Fe3+,the U content is still higher than that in digested solution,whereby it is impossible to remove U.When Fe(OH)3 exists,which can act as coprecipitant,the U content after purification can be depressed,the U content after purification decreases with decrease of U content in digested solution.The optimum pH for coprecipitation is about 5.8.