电位落差法与氧化系数法对砂岩型铀矿氧化还原环境判定研究  

Study on the Determination of the Oxidative Environment of Sandstone Type Uranium Deposit by Potential Landing Method and Oxidation Coefficient Method

作　　者：乔浩 李鹏飞[1] 邓长生[1] 王斌堂[1] 梁文展 QIAO Hao;LI Pengfei;DENG Changsheng;WANG Bintang;LIANG Wenzhan(Geological Party No.216,CNNC,Urumqi,Xinjiang 830000,China)

机构地区：[1]核工业二一六大队,新疆乌鲁木齐830000

出　　处：《铀矿地质》2022年第1期143-148,共6页Uranium Geology

摘　　要：岩石的电位差(△Eh)的变化与成矿机理及探矿找矿有密切关系。文章以高锰酸钾作为氧化剂,采用电位落差法、氧化系数法来研究砂岩型铀矿的氧化还原电位,系统研究两种方法对砂岩型铀矿△Eh测定结果的影响,提升砂岩型铀矿氧化还原性的检测效率。结果表明,通过矿物成分中的Fe^(3+)/Fe^(2+)值判断矿化带的氧化还原特性,与电位落差法测定的结果相吻合,两种方法得到佐证。可将该电位落差法测砂岩型铀矿氧化还原电位引入铀矿勘测现场,对环境影响较小,现场初步检测工作效率提升。为野外寻矿探矿现场快速地对砂型铀矿氧化还原性判断提供了理论及技术支持。The change of potential difference(△Eh)of rocks is closely related to metallogenic mechanism and prospecting.In this paper,potassium permanganate was used as oxidant,the redox potential of sandstonetype uranium ore was studied by potential drop method and oxidation coefficient method,and the influence of the two methods on the determination result of△Eh of sandstone-type uranium ore was systematically studied,so as to improve the detection efficiency of oxidation reduction of sandstone-type uranium ore.The results showed that the redox characteristics of the mineralization zone determined by Fe^(3+)/Fe^(2+)in mineral composition are consistent with the results measured by potential drop method,and the two methods are supported.The potential drop method can be used to measure the redox potential of sand-type uranium deposit,which has less impact on the environment and can improves the efficiency of the initial field survey,providing theoretical and technical support for the rapid initial judgment of the redox potential for sand-type uranium deposit exploration.

关 键 词：氧化还原电位 电位差 氧化系数法 砂岩型铀矿 

分 类 号：O657[理学—分析化学]