锆冶炼废渣中铀、钍的浸出试验研究OA
Leaching of Uranium and Thorium from Zirconium Metallurgical Waste Residue
锆英砂中常伴生有曲晶石、铀钍石和方钍石等矿物,这些矿物含有微量铀、钍等放射性元素,在生产氧氯化锆过程中,铀、钍等放射性元素富集于废渣中,具有一定回收价值.针对此类废渣的综合利用与放射性污染控制需求,研究了从废渣中提取铀、钍等有价元素的工艺条件,考察了不同浸出因素及参数对铀、钍浸出效果的影响.结果表明:在硫酸浓度4 mol/L、浸出时间4 h,液固体积质量比4∶1、浸出温度90 ℃条件下,铀、钍浸出率分别达99.9％、88.6％,效果较好.
Zircon sand often contains minerals such as kyanite,thorite and thorianite,which contain trace amounts of radioactive elements such as uranium and thorium.During the production of zirconium oxychloride,these radioactive elements are concentrated in the waste residue,which has certain recycling value.To meet the demands of comprehensive utilization and radioactive pollution control of such waste residues,the process conditions for extracting valuable elements such as uranium and thorium from the waste residues were studied,and the effects of different leaching factors and parameters on the leaching efficiency of uranium and thorium were investigated.The results show that under the conditions of sulfuric acid concentration of 4 mol/L,leaching time of 4 h,liquid volume to solid mass ratio of 4∶1,and leaching temperature of 90 ℃,the leaching rates of uranium and thorium reach 99.9％and 88.6％,respectively.The result is better.
张天溥;刘康;王桂硕;梁耕宇;刘忠臣;程浩;刘会武;向秋林
核工业北京化工冶金研究院,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149核工业北京化工冶金研究院,北京 101149||中核矿业科技集团有限公司,北京 101149
能源科技
锆冶炼废渣浸出铀钍
zirconium smelting waste residueleachinguraniumthorium
《湿法冶金》 2026 (1)
45-51,7
中国铀业有限公司-东华理工大学核资源与环境国家重点实验室联合创新基金项目(2023NRE-LH-04).
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