Abstract: Iron flotation tailings of Gongchangling ore dressing plant has the characteristics of high grade, fine grain size, -0.074mm content of about 65% and iron minerals in the fine level -0.019mm enrichment. According to the properties of the ore in Gongchangling concentrator iron flotation tailings, experimental studied was carried on the tailings by using fine particle gravity equipment - suspension vibration separator . Through grading separation, a suspension vibration separation for the finelevel can obtain the iron concentrate with the grade of 64.35% and recovery rate of of 30.93%, through grinding (grinding fineness -0.074mm) and cantilever vibration separation for the coarse level, the iron concentrate with the grade of 59.93% and recovery rate of 9.80% can be obtained.The grade of comprehensive iron concentrate is 63.22% and the rate of recovery is 40.73%. The iron grade of composite tailings fell to 12.58%. Iteffectively recoveres the iron in the tailings,and provides an optional scheme for Gongchangling iron flotation tailings recycling and reuse and it has significant social and economic benefit.