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| 过滤器捕集的贵金属颗粒的分析表征 |
| Analysis and characterization of precious metal particles captured by filters |
| Received:August 17, 2021 |
| DOI： |
| 中文关键词: 铂网 硝酸 过滤器 贵金属回收 |
| 英文关键词: platinum gauze nitric acid filter precious metals recovery |
| 基金项目: |
| Author Name | Affiliation | E-mail | | HAN Fei* | CNOOC Shanxi Precious Metals Co. Ltd., Jinzhong 030600, Shanxi, China | hanfeiok23@163.com | | LIU Xin* | CNOOC Shanxi Precious Metals Co. Ltd., Jinzhong 030600, Shanxi, China | | | HAO Xu-sheng* | CNOOC Shanxi Precious Metals Co. Ltd., Jinzhong 030600, Shanxi, China | | | FAN Chao-yang* | CNOOC Shanxi Precious Metals Co. Ltd., Jinzhong 030600, Shanxi, China | | | Quan Kai-dong* | CNOOC Shanxi Precious Metals Co. Ltd., Jinzhong 030600, Shanxi, China | |
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| 中文摘要: |
| 硝酸生产装置中的过滤器可将部分贵金属以颗粒的形式捕获回收。采用激光粒度分析仪、扫描电镜(SEM)、电感耦合等离子体发射光谱仪(ICP-AES)、X射线光电子能谱(XPS)等手段对颗粒的粒径、形貌、成分和表面价态进行了分析表征。结果表明，被捕获的含贵金属颗粒尺寸主要集中于10 μm，部分贵金属颗粒呈现金属镂空结构。颗粒的元素成分较为复杂，通过XPS对捕获的主要贵金属铂钯元素价态分析，发现其主要以化合态形式存在。 |
| 英文摘要: |
| Part of the precious metal in the form of particles can be captured and recovered by filter in the nitric acid production process. The particle size, morphology, composition and surface valence of the particles were analyzed by laser particle size analyzer, scanning electron microscope (SEM), inductively coupled plasma optical emission spectrometer (ICP-AES), and X-ray photoelectron spectroscopy (XPS). The results show that the size of captured precious metal-containing particles is mainly concentrated in 10 μm, and some of them have a metal hollow structure. The elemental composition of the particles is relatively complex. The valence analysis of the captured precious metals, platinum and palladium by XPS reveals that they mainly exist in the form of compound state. |
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