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| 超高纯银的制备研究 |
| Study on Preparation of Super-Pure Silver |
| Received:January 16, 2015 |
| DOI： |
| 中文关键词: 有色金属冶金 高纯银 电解精炼 离子交换 辉光放电质谱法 |
| 英文关键词: non-ferrous metallurgy super-pure silver electrolytic refining ion exchange GDMS |
| 基金项目:国家科技支撑计划(2012BAE06B06)。 |
| Author Name | Affiliation | | LIU Dan | Beijing Engineering Research Center of High Purity Metal Sputtering Target, Grikin Advanced Materials Co.LTD., Beijing 102200, China | | LI Yitao | Beijing Engineering Research Center of High Purity Metal Sputtering Target, Grikin Advanced Materials Co.LTD., Beijing 102200, China | | HE Xin | Beijing Engineering Research Center of High Purity Metal Sputtering Target, Grikin Advanced Materials Co.LTD., Beijing 102200, China | | XIONG Xiaodong | Beijing Engineering Research Center of High Purity Metal Sputtering Target, Grikin Advanced Materials Co.LTD., Beijing 102200, China
General Research Institute for Nonferrous Metals, Beijing 100088, China |
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| 中文摘要: |
| 采用电解精炼法制备6N超高纯银，考察了银浓度、电流密度、电流分布、反应温度等因素对银粉颗粒大小及纯度的影响，并通过理论分析选择了201、D301弱碱性阴离子树脂进行电解液净化除杂。采用SEM对银粉形貌进行了表征，并用GDMS对银粉杂质成分进行了分析。结果表明，控制电解液中的银含量在500~540 g/L，电流密度600~1000 A/m2，温度为30~40℃，同极极间距为10 cm，多孔钛网作阴极，可以得到总杂质含量小于1×10-6的6N超高纯银。 |
| 英文摘要: |
| 6N super-pure silver was prepared by the electrolytic refining method; the factors that influence the silver particle size and purity, such as the silver concentration, the current density, the current distribution, and reaction temperature were discussed. 201, D301 ion exchange resins were selected for electrolyte purification impurity by theoretical analysis, the silver powder morphology was characterized by SEM, and the impurities were analyzed by GDMS. The results showed that 6N super-pure silver in which the total content of impurities was less than 1×10-6 could be obtained by the following conditions, the silver content in the electrolyte was 500~540 g/L, the current density was 600~1000 A/m2, the temperature was 30~40℃, and the homopolar distance was 10 cm, the porous titanium mesh was used as the cathode. |
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