地球电化学成晕机制模拟实验及寻找隐伏钨矿示范研究

The question of halo-forming mechanism of electrogeochemical prospecting has been no breakthrough research results reported, which troubled application and extension of the technology for a long time. In order to solve these questions of basic theory of application. Use the reasearch on comparative analysis of laboratory simulation experiment and electrochemical dispersion model experiment of artificial poly-metallic ore body in the deep. Seek to achieve the sources of Halo metal ions, through simulating the capability of electrochemical migration of ore body metal ions only under the condition of free diffusion, probe into the dissolution and migration capability of metal ions. Combined with field typical deposit experiment , reveal the problem that the metal ions in the electrogeochemical halo is a source of deep or shallow. Provide more fully and persuasively theoretical basis for searching the concealed orebody using electrogeochemical methods. Through the electrogeochemical feasibility reasearch on typical concealed orebodies in the demonstration area (South Jiangxi tungsten mine), complete the model study on the prospecting tungsten deposit and the ore-prospecting model. Through the study of the above problems, resolve the important theoretical problem that has not resolved electrochemical Halo over the years. The study results have critical theory and practical significance for solving to look for deep ore bodies and predict concealed ore today.

地电化学找矿的成晕机制问题在国内外一直未有突破性的研究成果所报道，长期困扰该技术的推广应用，为解决这些应用基础理论问题，采用室内模拟对比分析实验和人造深部多金属矿体的电化学分散模式实验研究，模拟在只有自由扩散条件下矿体金属离子的电化学迁移能力，来探讨金属离子溶解和迁移能力，力求达到解决成晕金属离子来源问题。再结合野外典型矿床对比试验，揭示地球电化学成晕中金属离子是深部来源还是浅部的问题。为地球电化学寻找隐伏矿体提供更充分、更有说服力的理论依据。 通过示范区（赣南钨矿）典型隐伏矿体上方地球电化学的可行性研究，完成钨矿床找矿示范研究及相应的找矿模型。通过以上问题的研究，解决多年来一直未解决的电化学成晕的重要理论问题。其研究成果能解决当今寻找深部矿体及找矿预测难题，具有极其重要的理论和现实意义。

地表易找的露头矿殆尽，找矿难度的加大，迫切需要研究寻找隐伏矿的新方法新技术。国内外关于地电化学有两不同的观点，其一认为地电化学方法提取金属离子源自地表次生晕；其二，地电化学晕的物质直接来自于矿体。本项目研究金属矿地电化学成晕机理中离子来源,补充地球电化学成晕机制相关问题，通过菲克（Adolf Fick）定律计算与人造深部矿体实验槽对比分析研究，实验数据与理论数据相符，金属地球电化学溶解离子迁移扩散是典型Fick第二定律呈现非稳态扩散，形成典型“递推理论”。金属矿物地球电化学溶解实验；金属矿物黑钨矿、辉锑矿、金矿、黄铁矿、黄铜矿、方铅矿、闪锌矿等电化学溶解实验，进行不同时间跟踪，金属矿物侵泡液中离子含量成非线性增加。本项目野外实验，对比分析采空区与非采空区地电化学晕的差异、钻孔元素含量和地球电化学含量、地球电提取离子成分与其周围土壤样品中元素成份，不同形式显示地球电化学提取的离子来源地表附近，但能准确显示深部隐伏矿体信息。项目选取不同隐伏矿床进行地球电化学找矿试验，应用测试了地球电化学可行性。项目的金属矿床“递推理论”研究成果居相关领域国内前沿。项目应用研究成果寻找深部矿体及找矿预测难题。