| 低温常压条件下NaCl-H2O体系对铜活化迁移的 影响因素Ⅱ:pH值和盐度 |
| Received:February 20, 2014 Revised:April 29, 2015 点此下载全文 |
| 引用本文：REN CaiXia,MA LiChun,TANG QingFeng,ZHANG Qi.2015.Influence factors Ⅱ: pH and salinity on copper activation migration in NaCl-H2O system under condition of atmospheric pressure and low temperature[J].Mineral Deposits,34(3):581~588 |
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| Author Name | Affiliation | E-mail | | REN CaiXia | MLR Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS, Beijing 100037, China
China University of Geosciences, Beijing 100083, China | | | MA LiChun | MLR Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS, Beijing 100037, China | mlichun@cags.ac.cn | | TANG QingFeng | Beijing Center for Physical & Chemical Analysis, Beijing 100089, China | | | ZHANG Qi | MLR Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS, Beijing 100037, China | |
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| 基金项目:本文由中央级公益性科研院所基本科研业务费专项基金(编号: K1010、YK1404)、国家自然科学基金青年基金(编号: 41002028)和国家重点基础研究发展计划(973)项目(编号: 2011CB403007)共同资助 |
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| 中文摘要:文章采用动态模拟实验研究了卤水NaCl-H2O体系不同盐度、酸碱度对砂岩中铜元素的活化迁移作用。结果表明,在常压室温环境下,卤水盐度越高,越有利于含铜砂岩中铜的活化迁移,不同盐度卤水对铜的活化强度表现为w(NaCl)为25%的溶液>w(NaCl)为20%的溶液>w(NaCl)为10%的溶液>w(NaCl)为5%的溶液。酸碱度条件模拟实验,揭示了强酸(pH=0.71)或者强碱(pH=10.28)环境有利于铜的活化迁移,尤其是在强酸(pH=0.71)条件下,可极大增强铜的溶解性,这对于解释蒸发岩盆地含铜卤水的成矿过程具有重要的理论和实际意义。 |
| 中文关键词:地球化学 卤水 NaCl-H2O体系 盐度 pH值 铜活化 |
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| Influence factors Ⅱ: pH and salinity on copper activation migration in NaCl-H2O system under condition of atmospheric pressure and low temperature |
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| Abstract:This study focused on the activation effect of sandstone copper in the NaCl-H2O system by the dynamic simulation experiments under the conditions of different salinities and acidities. The results show that the higher the brine salinity, the more favorable the condition for copper's activation and migration in cupreous sandstone in the environment of atmospheric pressure and room temperature. The activation capability of Cu under different brine salinities shows the regularity 25% NaCl solution > 20% NaCl solution > 10% NaCl solution > 5% NaCl solution; In addition, the copper element is much easier to be activated in a strong acid (pH=0.71) or strong alkali (pH=10.28) environment; especially under the condition of strong acid (pH=0.71), the solubility of Cu could be greatly enhanced. The research provides important theoretical and practical basis for explaining the metallogenic process of Cu-bearing brine in evaporite basin. |
| keywords:geochemistry brine NaCl-H2O system salinity pH copper activation |
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