Research progress of recovery,purification and recycling of ruthenium from scrap ruthenium materials
The recovery,separation,purification and recycling of ruthenium products from scrap ruthenium materials are of great significance for achieving the sustainable development,resource conservation,and resource regeneration of precious metal ruthenium.The different sources of ruthenium-containing waste were introduced,and the main process methods recy-cling,separation,purification,and preparation of ruthenium products from different wastes,and advantages and disadvan-tages of each methods were reviewed.The recovery process methods of ruthenium in solid mainly included melting,chlorina-tion,alloy activation,electrolytic oxidation,etc.The recovery process of ruthenium in waste liquid mainly included replace-ment,precipitation,electrochemistry,ion exchange and ion imprinting method,etc.The separation and purification process method mainly adopted oxidative distillation in either acidic medium or alkaline medium.The prepared ruthenium products mainly described the process and method of ruthenium trichloride and ruthenium powder.