地浸采铀注液井小直径潜水泵抽水洗井试验  

Well Washing Test of Small Diameter Submersible Pump in InjectionWells for In-situ Leaching of Uranium

作　　者：姚益轩[1] 王亚安 胥国龙[1] 李星浩 张友澎 许影[1] 姚冲霄 YAO Yixuan;WANG Yaan;XU Guolong;LI Xinghao;ZHANG Youpeng;XU Ying;YAO Chongxiao(Beijing Research Institute of Chemical Engineering and Metallurgy,Beijing 101149,China;Xi’an Feiliu Electromechanical Equipment Engineering Co.,Ltd.,Xi’an 710016,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149 [2]西安飞流机电设备工程有限公司,陕西西安710016

出　　处：《铀矿冶》2024年第1期27-35,共9页Uranium Mining and Metallurgy

基　　金：中核集团集中研发项目(编号A60-1)。

摘　　要：某地浸采铀试验采区注液井周边含矿层堵塞严重。注液井套管内径仅有80 mm,在常规空压机抽水洗井结束后,在3口注液井中开展了小直径潜水泵抽水洗井试验。初始抽水量均在4.5 m_(3)/h左右,期间最小抽水量为3.4 m_(3)/h,其中2口井的第1股最浑浊洗井水的含砂量分别为4.36、5.19 kg/m_(3)。粒度、电镜扫描和化学组成分析显示,洗井水沉降干渣中的矿物碎屑主要为粉砂、细砂碎屑,少量黏土碎屑;化学沉淀主要是CaCO_(3)、MgCO_(3)和FeCO_(3);潜水泵抽水洗井累计运行约27.5 h,未出现任何故障。试验表明,小直径潜水泵抽水洗井可行且投资少、成本低、安全性高、实施方便。There is severe blockage in the surrounding ore bearing layers of the injection well in a certain uranium leaching experimental mining area.The inner diameter of the casing of the injection well is only 80 mm.After the completion of conventional air compressor well washing,a small diameter submersible pump well washing test was carried out in three injection wells.The initial pumping capacity is around 4.5 m_(3)/h,and the minimum pumping capacity during this period is 3.4 m_(3)/h.The sand content of the first turbid flushing water from two wells is analyzed to be 4.36 and 5.19 kg/m_(3) respectively.Particle size,electron microscopy scanning,and chemical composition analysis show that the mineral debris in the settled dry residue of the well washing water is mainly composed of silt and fine sand debris,with a small amount of clay debris.Chemical precipitation mainly consists of CaCO_(3),MgCO_(3),and FeCO_(3).The submersible pump has operated for about 27.5 h accumulatively without any failure.The test shows that the submersible pump is feasible,with less investment,low cost,high safety and convenient implementation.

关 键 词：地浸采铀 矿层堵塞 小直径潜水泵 抽水洗井 沉降干渣 

分 类 号：TD868[矿业工程—金属矿开采] TE252[矿业工程—矿山开采] TL212[石油与天然气工程—油气井工程]