| 氯化银在含氯离子的亚硫酸钠溶液中的浸出研究 |
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| 引用本文： | 张杜超,杜新玲,杨天足,杜作娟,窦爱春. 氯化银在含氯离子的亚硫酸钠溶液中的浸出研究[J]. 贵金属, 2007, 28(3): 10-14 |
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| 作者姓名： | 张杜超 杜新玲 杨天足 杜作娟 窦爱春 |
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| 作者单位： | 中南大学,冶金科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 利用配位化学理论,研究了pH值、亚硫酸钠浓度、氯离子浓度对亚硫酸钠浸出氯化银的影响.结果表明:pH值的增大和亚硫酸钠浓度的提高,使与银配位的亚硫酸根离子增多,从而氯化银的溶解度明显提高;在亚硫酸钠循环浸出氯化银的过程中,溶液中不断积累的氯离子导致浸银效果逐渐变差.结合工业生产,确定了亚硫酸钠浓度为2mol/L,控制每次浸出液中银的浓度为30g/L时,亚硫酸钠溶液可以循环浸出氯化银11次.
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| 关 键 词： | 湿法冶金 氯化银 亚硫酸钠 pH 氯离子 浸出 |
| 文章编号： | 1004-0676（2007）03-0010-05 |
| 修稿时间： | 2006-12-25 |
Study on Leaching of Silver Chloride in Sodium Sulfite Solution Containing Chloride Ions |
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| ZHANG Duchao,DU Xinling,YANG Tianzu,DU Zuojuan,Dou Aichun. Study on Leaching of Silver Chloride in Sodium Sulfite Solution Containing Chloride Ions[J]. Precious Metals, 2007, 28(3): 10-14 |
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| Authors: | ZHANG Duchao DU Xinling YANG Tianzu DU Zuojuan Dou Aichun |
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| Affiliation: | School of Metallurgical Science and Engineering, Central South University, Changsha, Hunan 410083, China |
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| Abstract: | The influences of pH value, concentrations of sodium sulfite and chloride ion on leaching of silver chloride by sodium sulfite were studied based on coordination equilibrium, The results show that sulfite ion increases with pH value and concentration of sodium sulfite, which results in the increase of solubility of silver chloride. In the circular leaching solution, the solubility of silver chloride becomes lower with the increase of concentration of chloride ion. In industrial production, the solution can circularly leach silver chloride 11 times when the concentration of sodium sulfite is 2mol/L and the concentration of silver ion is 30g/L after every leaching process. |
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| Keywords: | hydrometallurgy silver chloride sodium sulfite pH chloride ion leaching |
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