沉淀条件对钌粉粒度和形貌的影响  

Effect of Precipitation Conditions on the Size and Morphology of Ruthenium Powder

作　　者：李红梅[1] 贺小塘[1] 吴喜龙[1] 李勇[1] 赵雨[1] 赵金成[1] 

机构地区：[1]贵研资源(易门)有限公司,昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,昆明650106

出　　处：《贵金属》2016年第1期6-10,共5页Precious Metals

基　　金：云南省科技厅省院省校科技合作项目(2013IB020);昆明市科技局高新技术研究与开发项目(2015-1-G-00218)

摘　　要：采用化学法制备高纯钌粉,研究了沉淀条件对制备的钌粉粒度和形貌的影响,对钌粉的纯度进行了分析.结果表明,氯气氧化作用对钌粉的粒度和形貌影响较大,在沉淀过程进行搅拌能有效细化氯钌酸铵晶粒.采用氯化铵饱和溶液沉淀,沉淀过程进行搅拌,并通入氯气进行氧化,得到（NH4）2RuCl6 晶体,烘干后在800℃煅烧6 h,得到的钌氧化物在750℃条件下通氢还原30 min,得到的钌粉粒度约5~20 μm,呈近球形的多边形,辉光放电质谱法（GDMS）分析表明钌粉纯度达到99.95%以上.The effects of the precipitation conditions on the size and morphology of ruthenium powdersprepared by chemical method were studied, and the purity of ruthenium powder was analyzed. The resultsshowed that oxidant chlorine has a great effect on the size and morphology of ruthenium powder, and stircan effective refine grain of （NH4）2RuCl6） in the precipitation process. With a saturated ammoniumchloride solution as a precipitating agent and stirring during the precipitation, the （NH4）2RuCl6 crystalobtained by precipitation, is dried and then calcined at 800℃ for 6 h. The ruthenium oxide product isreduced in a hydrogen atmosphere at 750℃ for 30 min. The particle size of ruthenium powder obtainedby reduction is about 5~20 μm and it is nearly spherical polygons, and glow discharge mass spectrometry（GDMS） analysis show that the ruthenium powder purity reached more than 99.95%.

关 键 词：湿法冶金 化学沉淀法 高纯钌粉 粒度和形貌 

分 类 号：TF838[冶金工程—有色金属冶金]