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有色金属(冶炼部分):2019,(11):32-37
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基于PHT3D软件的酸法地浸采铀过程模拟探讨
陈茜茜1,2, 罗 跃1,2, 李 寻1, 陈经明1, 周泽超1
(1.东华理工大学水资源与环境工程学院;2.东华理工大学核资源与环境重点实验室)
Discussion on Reactive Transport Modeling of In Situ Uranium Acid Leaching with PHT3D
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投稿时间:2019-06-27    修订日期:2019-07-01
中文摘要: 运用反应运移模拟软件PHT3D建立酸法地浸采铀一维模型,阐明强酸低含氧情况下地浸采铀过程中铀水解与迁移的时空演化规律。模拟结果表明,铀矿溶解后,四价铀最多,六价铀次之;矿层水溶液的pe(电位)和pH在时间上的变化与各个液相主要组分的浓度变化相关,pe和pH变化曲线的交点为液相主要组分浓度显著变化的起点;铀矿不仅会溶解也伴随着铀矿微量生成的现象,且溶解沉淀的量与位置有关。
Abstract:One-dimensional model of in situ uranium acid leaching was established with reaction transport simulation software PHT3D to clarify temporal and spatial evolution of uranium hydrolysis and migration during in situ uranium leaching under strong acid and low oxygen concentration condition. The simulation results show that uranium dissolution produces the most tetravalence uranium followed by hexavalent uranium as the second; the values of pe (electric potential) and pH of aqueous solution are related to change of concentration of main liquidus components. Curves of pe and pH are related, and the intersection point is the starting point of significant change of main liquidus components concentration. Uranium deposit will not only dissolve but also accompany phenomenon of micro-generation of uranium, and amount of dissolved precipitate is related to position.
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基金项目:江西省教育厅科技项目(GJJ180380);东华理工大学核资源与环境重点实验室开放基金项目(NRE1612)
引用文本:
陈茜茜,罗 跃,李 寻,陈经明,周泽超.基于PHT3D软件的酸法地浸采铀过程模拟探讨[J].有色金属(冶炼部分),2019(11):32-37.
CHEN Qian-qian,LUO Yue,LI Xun,CHEN Jing-ming,ZHOU Ze-chao.Discussion on Reactive Transport Modeling of In Situ Uranium Acid Leaching with PHT3D[J].Nonferrous Metals (Extractive Metallurgy),2019(11):32-37.

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