中国资源综合利用2025，Vol.43Issue(1)：1-8,8.DOI:10.3969/j.issn.1008-9500.2025.01.001
钒钛磁铁矿尾矿/粉煤灰漂珠砂浆EPS复合材料的制备与性能研究
Study on Preparation and Performance of Vanadium-Titanium-Magnetite Tailings/Fly Ash Float Bead Mortar EPS Composites
摘要
Abstract
At present,the massive amount of tailings generated by the large-scale mining of vanadium-titanium-magnetite in China poses a serious threat to the ecological environment.In addition,polystyrene foam insulation materials have poor flame retardancy,which limits their application and development.Therefore,vanadium titanium magnetite,cement and polystyrene foam are used as the main raw materials,and fly ash floating beads are selected to replace some tailings to prepare composite materials with high strength and good thermal insulation performance.The results show that when the bulk density is 600 g/L and the proportion of fly ash floating beads replacing vanadium-titanium-magnetite tailings fine sand is 30%,the thermal conductivity of the composite material is 0.34 W/(m·K),and the composite material has good mechanical properties.The flexural strength and compressive strength after 7 d of curing are 1.05 MPa and 2.50 MPa,respectively,and the flexural strength and compressive strength after 28 d of curing are 1.03 MPa and 2.52 MPa,respectively.The addition of fly ash floating beads do not affect the hydration reaction of cement,and no new hydration products are produced.关键词
钒钛磁铁矿尾矿/综合利用/砂浆复合保温材料/尾矿细砂Key words
vanadium-titanium-magnetite tailings/comprehensive utilization/mortar composite insulation material/tailings fine sand分类
土木建筑引用本文复制引用
韩维康,柴宗册,房明浩,闵鑫,黄朝晖,刘艳改,吴小文,米瑞宇..钒钛磁铁矿尾矿/粉煤灰漂珠砂浆EPS复合材料的制备与性能研究[J].中国资源综合利用,2025,43(1):1-8,8.基金项目
国家重点研发计划项目课题(2021YFC1910603). （2021YFC1910603）
