Abstract: Aiming at the problems of complex compositions and difficult recovery of polymetal in a lead pyrometallurgical waste slag,experiments of gravity separation,flotation,magnetic separation and magnetic separation-gravity separation were carried out respectively,and the comprehensive recovery indexes were compared and analyzed.The results showed that single gravity separation,flotation and magnetic separation process could not get better indexes.Gravity separation-magnetic separation combined process could get more reasonable products indexes.The iron concentrate grade was 55.47%,lead concentrate grade was 46.13%.Polymetal recovery of the lead waste slag was realized.

Key words: Lead smelting slag, Comprehensive recovery, Magnetic separation, Gravity separation