研究了在少量抗坏血酸存在下 ,硫酸铵 -硫氰酸铵 -乙醇体系萃取浮选Cu( )的行为。Cu( )被抗坏血酸还原为 Cu( )后能与 SCN-生成 Cu SCN沉淀 ,该沉淀可以被萃取浮选在乙醇与水两相界面之间。 p H 1～ 4时 ,能使 Cu( )与常见离子 Fe( )、Co( )、Ni( )、Mn( )、Zn( )、Cd( )、Cr( )、Mo( )分离 The extraction behavior of Cu (superscript 2 +) by ammonium sulfate - ammonium thiocyanate - ethanol system was studied in the presence of a small amount of ascorbic acid. The reduction of Cu () to Cu () by ascorbic acid can form Cu SCN precipitate with SCN-, and the precipitate can be extracted and flotation at the interface between ethanol and water. The separation of Cu () from common Fe (), Co (), Ni (), Mn (), Zn