Welcome to Metal Mine! Today is Share:
×

扫码分享

Metal Mine ›› 2022, Vol. 51 ›› Issue (05): 232-236.

Previous Articles    

Study on the Preparation of Recycled Aggregate Using Fine Iron Tailings

PAN Jingwen1XIA Ling1SONG Shaoxian1ZHAO Yunliang1LI Hongqiang1,2ZHU Jiang3   

  1. 1.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;2.School of Xingfa Mining,Wuhan Institute of Technology,Wuhan 430205,China;3.Hubei Sanxin Gold Copper Limited Company,Huangshi 431500,China
  • Online:2022-05-15 Published:2022-05-27

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.