摘要
铱由于其物理、化学性质稳定,被广泛应用于航空、电子、催化等高新技术行业,铱二次资源回收意义重大。基于对40多篇文献的分析,介绍了含铱废料的来源,综述了从不同废料中回收提纯铱的工艺,从铱金属和合金废料中回收铱包括溶解和精炼等工序,溶解的方法主要有碎化活化溶解,碱熔融预处理等;精炼的工艺主要有沉淀法、离子交换法、萃取法、氢还原法、高温氧化挥发法等。根据原料成分以及对铱纯度的要求,各种除杂的方法可以联合使用。
Iridium is widely used in aviation,electronics,catalysis and other high-tech industries because of its stable physical and chemical properties.The secondary resource recovery of iridium is of great significance.Based on the analysis of more than 40 literatures,the secondary resources of iridium-containing materials were introduced,and and the processes of recovering and purifying iridium from different waste materials were reviewed.The recovery of iridium from iridium metal and alloy wastes includes dissolution and refining methods.The dissolution methods mainly consists of crushing,activation and dissolution,alkali melting pretreatment,etc.The refining processes mainly include precipitation,ion exchange,extraction,hydrogen reduction,high-temperature oxidation volatilization method,etc.According to the composition of raw materials and the requirements of iridium purity,various impurity removal methods can be used in combination.
作者
段顺飞
赵家春
吴跃东
童伟锋
董海刚
DUAN Shun-fei;ZHAO Jia-chun;WU Yue-dong;TONG Wei-feng;DONG Hai-gang(Kunming Institute of Precious Metals,State key Laboratory of Advanced Technology of Comprehensive Utilization of Platinum Metals,Sino-platinum Metals Co.Ltd.,Kunming 650106,China)
出处
《贵金属》
CAS
北大核心
2021年第2期93-98,共6页
Precious Metals
基金
云南省重大科技专项(202002AB080001,2018ZE001)。
关键词
铱
富集回收
提纯
iridium
enrichment and recovery
purification
