从有机废液中回收铱的工艺  

Recovery of Iridium from Organic Wastewater

作　　者：贺小塘[1,2] 刘伟平[1,2] 吴喜龙[1,2] 常桥稳[1,2] 王欢[1,2] 韩守礼[1,2] 

机构地区：[1]贵研铂业股份有限公司 [2]昆明贵金属研究所,云南昆明650106

出　　处：《贵金属》2010年第2期6-9,共4页Precious Metals

基　　金：云南省重大科技计划项目资助(2008IA008;2008CF001)

摘　　要：提出了一种全新的工艺回收有机废液中的铱。采用王水氧化破坏有机物,使铱转化为铱的盐酸溶液。含铱的溶液净化后浓缩结晶,得到氯铱酸,直接煅烧、氢还原生产高纯铱粉。整个工艺操作简单实用,铱回收率高。A new process was established to recover iridium from Ir - containing organic wastewater. The process involves 4 steps, as following： （ 1 ） destruction of organic substance by aqua regia, transferring i- ridium into aqueous chloride media; （2） separation of Ir in the form of Ir（OH） 3 or Ir（ OH）4 from the a- queous by hydrolysis with NaOH; （3） re - dissolution of Ir（OH） 3 or Ir（OH） 4 in hydrochloride ; and （4） purification by crystallization and ion - exchange to obtain chloro - iridie aied from the solution. Then cal- cination and hydrogen reduction of chloro - iridie aicd were used to produce metallic iridium. The process was simple, suitable and has high recovery.

关 键 词：冶金技术 铱 回收 有机废液 

分 类 号：TF834[冶金工程—有色金属冶金]