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

作　　者：韩非 刘欣 郝旭升 范朝阳 权凯栋 HAN Fei;LIU Xin;HAO Xu-sheng;FAN Chao-yang;Quan Kai-dong(CNOOC(Shanxi)Precious Metals Co.Ltd.,Jinzhong 030600,Shanxi,China)

机构地区：[1]中海油(山西)贵金属有限公司,山西晋中030600

出　　处：《贵金属》2022年第2期42-46,共5页Precious Metals

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10μm,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。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 10μm,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.

关 键 词：铂网 硝酸 过滤器 贵金属回收 

分 类 号：TQ111.2[化学工程—无机化工] O614.82[理学—无机化学]