摘要
我国砂岩型铀矿床渗透性普遍偏低,因此,地浸矿山多呈现出抽注液能力差、生产能力低、浸出周期长等特点。在某砂岩型铀矿床开展的地浸采铀试验中,多个注液井的注液量出现明显下降,影响试验的正常运行。为解决上述问题,利用稀盐酸作为解堵试剂,开展稀盐酸解堵工艺的研究。室内试验的结果表明,注酸后岩芯渗透率较之前上升128%。将该工艺应用至现场试验,结果显示,经稀盐酸解堵工艺处理后,注液井的注液量提升55%~117%,取得了显著效果。
Low production capacity and long leaching life are very common characteristics in ISL mines due to low permeability of sandstone-type uranium deposits in China.During the in-situ leaching field test,the flowrate of some injection wells decrease rapidly,which adversely affect the operation.In order to solve the problems,plugging removal process with diluted hydrochloric acid is adopted because of its many advantages.During the laboratory experiment,it is shown that the core sample specific permeability increases by 128% after it is treated with 2 g/L hydrochloric acid.The application of this process has achieved good effect and the flowrate of injection wells increase by from 55%to 117%.
作者
原渊
江国平
邓锦勋
程威
赵海军
王如意
YUAN Yuan;JIANG Guoping;DENG Jinxun;CHENG Wei;ZHAO Haijun;WANG Ruyi(Tongliao Uranium Co.,Ltd.,Tongliao 028000,China;Beijing Research Institute of Chemical Engineering and Metallurgy,Beijing 101149,China;Inner Mongolia Mining Co.,Ltd.,Hohhot 010011,China)
出处
《中国矿业》
北大核心
2020年第1期120-122,共3页
China Mining Magazine
关键词
砂岩型铀矿床
渗透率
注液量
解堵工艺
sandstone type uranium deposit
specific permeability
flowrate of injection wells
plugging removal process
