摘要
我国是工业固废排放大国,在多年消解工业固废的历史进程中,建材行业一直是工业固废资源化、减量化、无害化处置的最大承接者,也是“双碳”目标推进和实现的领跑者。本文通过资源化利用煤矸石制备高活性低碳生态胶凝材料的探索和研究,普查了硅铝体系胶凝材料的主要物化性能,试验表明,其性能指标达到42.5级和32.5级水泥指标的情况下,煤基固废综合利用率达到了48%和65%,相比普通硅酸盐水泥而言,吨产品减少碳酸盐分解所排放的CO_(2)约50%以上,真正意义上突破了煤矸石工业固废的大比例应用和胶凝材料的低碳制造。
China is a major country in industrial solid waste discharge.In the historical process of years of digesting the solid waste,the building materials industry has been the biggest undertaking of recycling,reduction and harmless disposal of industrial solid waste.Besides that,it is also the leader of the"double carbon"goal promotion and realization.In this paper,the main physicochemical properties of silica-aluminum system ecological cementitious material were investigated through the exploration and research on the preparation of high activity and low carbon ecological cementitious material by recycling coal gangue.The test showed that when the performance index reaches the grade 42.5 and grade 32.5 cement indexes,the comprehensive utilization rate of coal-based solid waste reaches 48%and 65%.Compared with ordinary Portland cement,CO_(2) emission can be reduced by more than 50%from carbonate decomposition when producing each ton of the silica-aluminum system ecological cementitious material.In a real sense,it breaks through the large-scale application of solid waste of coal gangue industry and the low-carbon manufacturing of cementing materials.
出处
《水泥》
CAS
2023年第12期1-4,共4页
Cement
基金
兰州市人才创业创新科技计划项目(G2022-RC-5)
甘肃省技术创新引导计划-科技专员专项项目(2022-0370-GXC-0092)
甘肃省青年人才(团队项目)(2023-RC-045)。
关键词
资源化
煤基固废
煤矸石
高活性
低碳
生态胶凝材料
基本性能研究
recycling
coal-based solid waste
coal gangue
high-activity
low carbon
ecological cementitious material
basic performance study
