基于COMSOL+PHREEQC耦合数值模拟的浸出试验--以内蒙古某铀矿浸出工艺试验为例  

Leaching Test Study Based on COMSOL+PHREEQC Coupled Numerical Simulation:A Case Study of Uranium Leaching Process in Inner Mongolia

作　　者：张传飞 何斌 骆桂君 刘金辉[3] 许影 陈梅芳[4,5] ZHANG Chuanfei;HE bin;LUO Guijun;LIU Jinhui;XU Ying;CHEN Meifang(Inner Mongolia Mining Co.,Ltd.,CNNC,Hohhot 010010,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,China;School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang 330013,China;National Key Laboratory of Uranium Resource Exploration-Mining and Nuclear Remote Sensing,Beijing 101149,China;Nuclear Industry Beijing Chemical and Metallurgical Research Institute,Beijing 101149,China)

机构地区：[1]中核内蒙古矿业有限公司,呼和浩特010010 [2]中南大学资源与安全工程学院,长沙410083 [3]东华理工大学水资源与环境工程学院,南昌330013 [4]铀资源探采与核遥感全国重点实验室,北京101149 [5]核工业北京化工冶金研究院,北京101149

出　　处：《有色金属（冶炼部分）》2025年第1期110-118,共9页Nonferrous Metals（Extractive Metallurgy)

基　　金：中国铀业自主科研项目(CNUC-YF2021)。

摘　　要：室内浸出工艺试验是联系科研和工业生产的必要环节,针对可地浸砂岩型铀矿浸出工艺室内试验条件与工业生产条件不同、物理试验组数多、矿岩采取困难等问题,提出了一套基于COMSOL+PHREEQC耦合的地浸采铀柱浸数值模拟模型构建方法,并以内蒙古某铀矿浸出室内试验(物理试验)为例,开展了物理试验与数值模拟试验对比研究。结果表明:采用基于COMSOL+PHREEQC耦合的数值模拟法,在酸法浸出室内柱浸试验模拟方面,具有良好的可行性;相同压力条件下,pH、U、Fe^(3+)、Ca^(2+)、SO_(4)^(2-)等溶出组分的浸出规律基本一致,峰值出现的时间相对较吻合;不同压力条件下,数值模拟模型的结果符合压力调节情况下的一般规律;所建数值模拟模型在U、Ca^(2+)浓度峰值大小方面尚存在差异,需要进一步完善模拟模型。The indoor leaching process experiment is a necessary link between scientific research and industrial production.In view of the differences between the indoor experimental conditions and industrial production conditions for the leaching process of in-situ leachable sandstone-type uranium deposits,the large number of physical experiment groups and the difficulty of mining and rock sampling,a set of numerical simulation model construction methods for in-situ leachable uranium mining column leaching based on the coupling of COMSOL and PHREEQC was proposed.The indoor test(physical test)of a uranium ore leaching in Inner Mongolia was taken as an example.A comparative study of physical test and numerical simulation test was carried out.The results show that the numerical simulation method based on the coupling of COMSOL and PHREEQC has good feasibility in the simulation of acid leaching indoor column leaching experiments.Under the same pressure conditions,the leaching rules of dissolved components such as pH value,U,Fe^(3+),Ca^(2+),and SO_(4)^(2-)are basically consistent,and the time of peak occurrence is relatively consistent.Under different pressure conditions,the results of the numerical simulation model conform to the general rules under pressure adjustment.There are still differences in the peak values of U and Ca^(2+)concentrations in the constructed numerical simulation model,which needs to be further improved.

关 键 词：地浸采铀 室内浸出工艺试验 数值模拟 对比研究 

分 类 号：TL212.12[核科学技术—核燃料循环与材料]