典型文献
Quantifying the impact of mineralogical heterogeneity on reactive transport modeling of CO2 + O2 in-situ leaching of uranium
文献摘要：
CO2 + O2 in-situ leaching (ISL) of sandstone-type uranium ore represents the third generation of solution mining in China.In this study,reactive transport modeling of the interaction between hydrodynamic and geochemical reactions is performed to enable better prediction and regulation of the CO2 + O2 in-situ leaching process of uranium.Geochemical reactions between mining solutions and rock,and the kinetic uranium dissolution controlled by O2 (aq) and bicarbonate (HCO3) are considered in the CO2 + O2 ISL reactive transport model of a typical sandstone-hosted uranium ore deposit in northern China.The reactive leaching of uranium is most sensitive to the spatial distribution of the mineralogical properties of the uranium deposit.Stochastic geostatistical models are used to represent the uncertainty on the spatial distribution of mineral grades.A Monte Carlo analysis was also per-formed to simulate the uranium production variability over an entire set of geostatistical realizations.The ISL stochastic simulation performed with the selected geosta-tistical realizations approximates the uranium production variability well.The simulation results of the ISL reactive transport model show that the extent of the uranium plume is highly dependent on mineralogical heterogeneity.The uncertainty analysis suggests the effect of uranium grade heterogeneity was found to be important to improve the accurate capture of the uncertainty.This study provides guidance for the accurate simulation and dynamic regula-tion of the CO2 + O2 leaching process of uranium at the scale of large mining areas.
文献关键词：
中图分类号：
作者姓名：
Yun Yang;Wenjie Qiu;Zhengbang Liu;Jian Song;Jianfeng Wu;Zhi Dou;Jinguo Wang;Jichun Wu
作者机构：
School of Earth Sciences and Engineering,Hohai University,8 Focheng West Rd.,Nanjing,China;Key Laboratory of Surficial Geochemistry,Department of Hydrosciences,School of Earth Sciences and Engineering,Nanjing University,Ministry of Education,163 Xianlin Rd.,Nanjing,China;Beijing Research Institute of Chemical Engineering Metallurgy,Beijing,China
文献出处：
引用格式：
[1]Yun Yang;Wenjie Qiu;Zhengbang Liu;Jian Song;Jianfeng Wu;Zhi Dou;Jinguo Wang;Jichun Wu-.Quantifying the impact of mineralogical heterogeneity on reactive transport modeling of CO2 + O2 in-situ leaching of uranium)[J].地球化学学报（英文版）,2022(01):50-63
A类：
geosta,tistical
B类：
Quantifying,impact,mineralogical,heterogeneity,reactive,transport,modeling,situ,leaching,uranium,ISL,sandstone,type,ore,represents,third,generation,mining,China,In,this,study,interaction,between,hydrodynamic,geochemical,reactions,performed,enable,better,prediction,regulation,process,Geochemical,solutions,rock,kinetic,dissolution,controlled,by,aq,bicarbonate,HCO3,considered,typical,hosted,deposit,northern,most,sensitive,spatial,distribution,properties,Stochastic,geostatistical,models,used,uncertainty,grades,Monte,Carlo,analysis,was,also,simulate,production,variability,over,entire,set,realizations,stochastic,simulation,selected,approximates,well,results,show,that,extent,plume,highly,dependent,suggests,effect,found,important,improve,accurate,capture,This,provides,guidance,scale,large,areas
AB值：
0.443894
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