钒尾矿制备矿山充填材料的研究
A Study on Preparation of Mine Filling Materials from Vanadium Tailings
李峰 1方一凡 1狄燕清1
作者信息
- 1. 商洛学院化学工程与现代材料学院/陕西省尾矿资源综合利用重点实验室/陕西省矿产资源高效清洁转化与新材料工程研究中心,陕西商洛 726000
- 折叠
摘要
为解决钒尾矿大量堆积问题,以钒尾矿为主要原料,粉煤灰为辅助原料,硅酸盐水泥为胶凝剂,硫酸钠为激发剂,制备矿山充填材料,研究了水泥用量、粉煤灰用量、硫酸钠掺量、料浆浓度和养护时间因素对样品性能的影响.结果表明,钒尾矿∶粉煤灰∶水泥=60∶10∶30,Na2SO4掺量0.6％,料浆浓度76％时,样品养护28 d后抗压强度可达12.2 MPa,满足了矿山企业对高强度充填材料的抗压强度需求(≥ 12 MPa).以期为钒尾矿的资源化利用提供参考.
Abstract
In order to solve the problem of massive accumulation of vanadium tailings,vanadium tailings are used as the main raw material,fly ash as the auxiliary raw material,portland cement as the gelling agent,and sodium sulfate as the activator to prepare mine filling materials.The influence of factors such as the amount of cement,the amount of fly ash,the content of sodium sulfate,the slurry concentration and cure time on the sample performance is studied.The results show that when the vanadium tailings∶fly ash∶cement=60∶10∶30,the content of Na2SO4 is 0.6％,and the slurry concentration is 76％,the compressive strength of the sample after curing for 28 days can reach 12.2 MPa,and the compressive strength of the product can meet the demand of mining enterprises for high-strength filling materials(≥12 MPa).The research results provide reference for the resource utilization of vanadium tailings.
关键词
钒尾矿/硫酸钠/矿山充填材料/抗压强度Key words
vanadium tailings/sodium sulfate/mine filling materials/compressive strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据