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| 1 | 桂北地区寒武系黑色页岩化学风化特征显示文摘以桂北地区广泛分布的寒武系清溪组黑色页岩为对象,采集该区的黑色页岩和风化产物及酸性环境水,对岩样的矿物与化学成分、微观结构特征及酸性水的水化学特征进行分析,探讨该区黑色页岩的化学风化强度和风化产物的形成条件及其共生序列。研究结果表明:在桂北地区气候条件影响下,富含黄铁矿等硫化矿物的清溪组黑色页岩整体处于中等化学风化程度,并且其风化过程导致周围环境水的严重酸化(pH为2~3),还生成白铁矾、叶绿矾和黄钾铁矾等次生有害矿物。因此,在酸性水和次生膨胀性硫酸盐的共同作用下,黑色页岩发育区的岩体工程性质将极度弱化。 | 廖昕 巫锡勇 朱宝龙 | 2013 | 中南大学学报(自然科学版)2013，44，12： | 6 |
| 2 | Galena-pyrolusite co-extraction in sodium chloride solution and its electrochemical analysis显示文摘The co-extraction behavior of galena-pyrolusite in a sodium chloride solution and the electrochemical mechanism of this process were investigated,and some factors affecting the leaching rate of Pb and Mn were optimized.The results show that all the factors such as the concentration of NaCl,HCl and pyrolusite ore,reaction time,temperature,adding times of HCl,affect the leaching rate of Pb.The main affecting factors are the concentration of NaCl,reaction time and temperature.The Tafel polarization curves and EIS plots of the galena and pyrolusite in the NaCl solution demonstrate that during the oxidation process of galena mineral electrode,film forms on the galena surface,which prevents galena from deeper oxidation.However,the film resistance can be greatly reduced in the presence of sodium chloride,thus promoting the reaction rate of galena. | 龙怀中 柴立元 覃文庆 | 2010 | Transactions of Nonferrous Metals Society of China2010，20，5： | 1 |
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