矿床地质:2024,Vol.>>Issue(1):71-85

热液体系溶解度实验和热力学计算方法在成矿过程模拟中的应用
中国地质大学(北京)
地球科学与资源学院, 北京 100083;中国地质科学院矿产资源研究所, 自然资源部成矿作用与资源评价重点实验室 北京 100037
Application of hydrothermal system solubility experiment and thermodynamic calculation method in metallogenic process simulation
YANG Ying,WANG JiaXin,ZHANG XueNi,YUAN ShunDa
(School of Earth Science and Mineral Resources, China University of Geosciences, Beijing 100083, China;MNR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, CAGS, Beijing 100037, China)
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投稿时间:2023-04-12   修订日期:2024-01-17      网络发布日期:2024-03-08
中文摘要:热液流体对金属元素的迁移、富集及沉淀成矿起着关键作用,定量刻画金属元素在热液成矿过程中的运移是矿床学研究的重点和难点。以热力学理论为基础,通过开展溶解度实验,揭示金属元素在热液流体中的地球化学行为,是研究金属元素迁移、富集沉淀机制行之有效的重要手段。其中,基于钛合金反应釜开展不同物理化学条件下金属元素在热液流体中的溶解度实验,结合相关的热力学模拟,能够精确测定金属元素在热液流体中的溶解度、络合物配位数、气液两相中的分配系数及相关热力学参数,为定量模拟热液成矿过程提供重要的实验依据。文章归纳了近年来针对热液体系的实验矿床学方法,分析了各类实验方法与分析手段的优点与不足。重点介绍钛合金反应釜溶解度实验和热力学模拟计算方法,并结合该方法模拟钪矿床成矿的水岩反应过程,说明该方法在成矿过程模拟中的应用,最后阐述了其存在的问题,并对该领域未来的研究趋势提出了展望,以期推动该方法在战略性关键金属超常富集机制研究中的应用。
Abstract:Hydrothermal fluids play a key role in transport, enrichment and deposition of the metallic elements, and therefore, quantitatively discretion of the hydrothermal mobility of metal elements has always attracted considerable attentions. Hydrothermal experiments are one of the most effective ways to understand the behavior of the metallic elements in hydrothermal systems. The Ti-alloy-reactor solubility experiment, conducted under various physical and chemical conditions, combined with the related thermodynamic calculation, can accurately determine the solubility, the complex coordination number, the partitioning coefficient between gas-liquid phases and the other related thermodynamic parameters of metal elements. The application of these thermodynamic dataset could effectively evaluate the mechanisms responsible for hydrothermal transport and deposition of the metal elements. In this contribution, we review various hydrothermal experimental methods, and analyzes the advantages and disadvantages of various experimental and analytical methods. Combined with the study cases in scandium mineralization process, the solubility experiments conducted in titanium alloy fusion reactors are particularly introduced. This paper also summarizes current application status of this method in simulation of mineralization process, and the research trends are put forward in the end. This paper provides a comprehensive review of the Ti-alloy-reactor solubility experiments and the related thermodynamic calculation, and the existing problems of this method are explained, in order to promote the application and development of this method in simulation of the mineralization process, and so as to make a major breakthrough in the study of the mechanism of super-enrichment strategic key metals.
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基金项目:本文得到国家自然科学基金项目(编号:42203043、92062218)和中央级公益性科研院所基本科研业务费(编号:KK2213)联合资助
引用文本:
杨颖,王佳新,张雪旎,袁顺达.2024.热液体系溶解度实验和热力学计算方法在成矿过程模拟中的应用[J].矿床地质,43(1):71~85
YANG Ying,WANG JiaXin,ZHANG XueNi,YUAN ShunDa.2024.Application of hydrothermal system solubility experiment and thermodynamic calculation method in metallogenic process simulation[J].Mineral Deposits43(1):71~85
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