微纳米溶氧技术在地浸采铀中的应用研究OA
Study on Micro-nano Oxygenation Technology for In-situ Leaching of Uranium
新疆某砂岩型铀矿床含矿含水层渗透性差,钻井运行水量小.采用"CO2+O2"中性浸出工艺时,氧气加入困难,矿层中的U(Ⅳ)氧化效率低,导致铀资源浸采率低.为解决该问题,研制了一种高效微纳米加氧装置.研究表明,该装置可为低渗透、低水量钻井稳定持续加入氧气.在浸出剂补加NH4HCO3和CO2浓度不变的条件下,与传统单井加氧相比,采用微纳米加氧时,浸出液铀浓度提升了35.95％,增加了矿层的氧化能力,氧气单耗降低了 20.16％,月度浸采率提升了 60.00％.
The ore-bearing aquifer in a sandstone-type uranium deposit in Xinjiang has poor permeabili-ty and small amount of water in the well.When using the"CO2+O2"neutral leaching process,it is difficult to add oxygen,and the oxidation efficiency of U(Ⅳ)in the ore is low,resulting in a low leac-hing rate of uranium resources.To solve this problem,an efficient micro-nano oxygenation device was developed.The results show that this device can add oxygen steadily and continuously to the low per-meability and low water well.Under the condition that the leaching agent is supplemented with NH4HCO3 and the CO2 concentration is unchanged,compared with the traditional single well oxygen-ation,the concentration in the leaching solution increased by 35.95％,the oxidation capacity of the ore layer was increased,the oxygen consumption was reduced by 20.16％,and the monthly leaching rate was increased by 60.00％during micro-nano oxygenation.
任华平;柯平超;师振峰;贾志远;李德;周义朋;谢希良;张子叶
新疆中核天山铀业有限公司,新疆 吐鲁番 838000东华理工大学水资源与环境工程学院,江西南昌 330013新疆中核天山铀业有限公司,新疆 吐鲁番 838000新疆中核天山铀业有限公司,新疆 吐鲁番 838000新疆中核天山铀业有限公司,新疆 吐鲁番 838000东华理工大学水资源与环境工程学院,江西南昌 330013新疆中核天山铀业有限公司,新疆 吐鲁番 838000新疆中核天山铀业有限公司,新疆 吐鲁番 838000
能源科技
微纳米加氧砂岩型铀矿中性浸出"CO2+O2"地浸采铀
micro-nano oxygenationsandstone-type uranium depositneutral leachingCO2+O2in-situ leaching of uranium
《铀矿冶》 2026 (1)
68-75,8
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