Abstract: In order to solve the problem of difficult utilization of industrial solid waste iron tailings,process study for preparing recycled aggregates with iron tailings as raw materials were conducted.The cement was regarded as the gel material to bond fine iron tailings and sand through hydration reaction,and the material ratio,curing way and mixing method were optimized to obtain qualified aggregates.The research results showed that the best preparation conditions for recycled aggregates are iron tailings dosage of 75%,sand dosage of 10%,cement dosage of 15% and triethanolamine dosage of 0.01% cements contents.Under the condition of the molding pressure of 20 MPa and the molding moisture of 13%,adopting the secondary mixing of high speed mixer and covering plastic film,the 28 d compressive strength of the sample is 33.760 MPa.The firmness value,crushing value and organic contents of the recycled aggregates meet the corresponding national standards.