高掺量低硅铁尾矿制备泡沫混凝土试验研究

Experimental Study on Preparation of Foam Concrete with High Content and Low Silicon Iron Tailings

为解决武钢资源集团程潮矿业有限公司杨家湾尾矿坝铁尾矿大量堆存、污染环境、存在溃坝等风险及利用难度高的难题,以该低硅铁尾矿为原料,通过化学方法制备轻质泡沫混凝土,探究了水料比、水泥用量、发泡剂用量、稳泡剂用量等因素对泡沫混凝土性能的影响,并在铁尾矿为55%的高掺量条件下,制备出了密度为600.08 kg/m^(3)、抗压强度为1.080 MPa的轻质泡沫混凝土,为该尾矿库中大量低硅铁尾矿的综合利用提供了科学依据。

In order to solve the problems of large-scale storage,environmental pollution,dam break and other risks,and the difficulty of utilization of iron tailings in Yangjiawan tailings dam of Chengchao Mining Co.,Ltd.,Wuhan Iron and Steel Resources Group,the low-silicon iron tailings were used as raw ma⁃terials to prepare lightweight foam concrete by chemical method.The effects of water-to-material ratio,ce⁃ment dosage,foaming agent dosage and foam stabilizer dosage on the performance of foam concrete were in⁃vestigated.Under the condition of high dosage of iron tailings of 55%,lightweight foam concrete with densi⁃ty of 600.08 kg/m^(3 )and compressive strength of 1.080 MPa was prepared.It provides a scientific basis for the comprehensive utilization of a large number of low silicon iron tailings in the tailings pond.