LEACHING METHOD OF METAL

文件类型：PDF文档
文件大小：295K
PROBLEM TO BE SOLVED : To provide a leaching method capable of efficiently recovering main metals such as copper and zinc included in a waste electronic substrate or the like, and highly recovering rare metals as well. SOLUTION : Waste electronic substrate powder being at least any of pulverized powder of a waste electronic substrate, incineration ash of a waste electronic substrate and pulverized powder of an electronic component, and an iron compound are added in at least either of water and an acidic liquid, and two or more kinds of metals are leached in a condition where temperature is ≥120°C and oxygen partial pressure is 1-3 MPa. COPYRIGHT : (C)2012, JPO&INPIT