摘要
采用氧化酸溶-氯化铵沉淀-离子交换的方法从钴铬铂靶材废料回收铂。物料溶解的最佳条件为:液固比6:1(m L/g)、氧化剂氯酸钠用量35 g、于95℃经4 h可完全溶解100 g物料。溶解液经氯化铵选择性沉淀铂后,主体杂质元素钴和铬被去除。获得的粗铂溶解后经离子交换提纯,微量杂质元素的含量进一步降低。最终煅烧获得的海绵铂纯度大于99.995%,满足钴铬铂靶材的再生产的要求。
Platinum in waste Co-Cr-Pt target material was recovered by using a three-step method of oxidizing acid dissolution,precipitation with ammonium chloride and ion exchange.100 g waste Co-Cr-Pt was totally dissolved at 95℃for 4 hours by 35 g sodium chlorate in 400 mL HCl.The liquid-solid ratio was 6 mL:1/g.Most of the impurities,including cobalt and chromium,were removed from the solution after platinum was selectively precipitated by ammonium chloride.The platinum was further refined by ion-exchange to get rid of residual impurity elements.The purity of the resulting platinum was more than 99.995%,meeting the requirements for the reproduction of Co-Cr-Pt target material.
作者
赵家春
董海刚
吴跃东
王亚雄
杨海琼
保思敏
童伟锋
赵文虎
周伟
ZHAO Jiachun;DONG Haigang;WU Yuedong;WANG Yaxiong;YANG Haiqiong;BAO Simin;TONG Weifeng;ZHAO Wenhu;ZHOU Wei(Kunming Institute of Precious Metals,State Key Laboratory of Advancde Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.Ltd.,Kunming 650106,China)
出处
《贵金属》
CAS
CSCD
北大核心
2018年第3期42-46,共5页
Precious Metals
基金
国家重点研发计划(2017YFB0305402、2017YFB0305402),国家自然科学基金项目(51504106),云南省科技计划项目(2015FB204、2017FA030、2016BA006)。
关键词
有色金属冶金
靶材
回收
纯铂
nonferrous metallurgy
target material
recovery
pure platinum
