Abstract: Based on high efficient flotation performance of combine flotation cell,expanded continuous short circuit ex periment of the flotation cell on a gold mine in Shandong was conducted,exploring the feasibility of the mine utilizing high effi cient flotation cell to realize short circuit flotation and improve technical and economic indexes.The results indicate that gold concentrate with gold grade of 45.66 g/t and recovery of 95.29% could be obtained by utilizing high efficient flotation cell un der the process of one rougher and two scavengers.Comparing to production tailings,gold grade of experiment tailings decreased by 0.02 g/t,and gold recovery increased by 1.11 percentage points.Final gold concentrate could be obtained with only one rougher,and gold recovery of rougher stage was twenty percentage points higher comparing to regular flotation cell.One rougher flotation of high efficient flotation cell was equal to one differential flotation,one rougher flotation and one cleaner flotation of traditional flotation cell,which will realize short circuit flotation.Based on flow field numerical simulation results high efficient flotation cell have distinct mineralization zone,transportation and separation zone,bubble enrichment zone.The turbulence in the mineralization area is higher,which is in favor of mineralization.The turbulence in bubble enrichment zone is lower,which can decrease the probability of target mineral desorption from bubble.In addition,almost no dead zone is existed in the high ef ficient flotation cell,which significantly improved the sorting efficiency of the equipment.

Key words: gold ore,high efficiency flotation cell,short circuit flotation,flow field numerical simulation