硅酸盐通报2025，Vol.44Issue(5)：1878-1887,10.DOI:10.16552/j.cnki.issn1001-1625.2024.1137
二次铝灰对低碳Al2O3-C耐火材料显微结构与性能的影响
Effect of Aluminum Dross on Microstructure and Properties of Low Carbon Al2O3-C Refractory Materials
摘要
Abstract
To achieve the high-value utilization of aluminum dross solid waste resources,this study introduced aluminum dross as a substitute material for α-Al2O3 in low carbon Al2O3-C refractory materials.Using tabular corundum,flake graphite,aluminum powder,and silicon powder as the primary raw materials,low carbon Al2O3-C refractory materials were fabricated.The effects of substituting α-Al2O3 with aluminum dross on the microstructure,oxidation resistance,erosion resistance,and thermal shock resistance of the materials were investigated.The results indicate that after carbon-buried heat treatment at 1 400 ℃,the substitution of α-Al2O3 with aluminum dross leads to a reduction in bulk density and an increase in apparent porosity.However,it also promotes the formation of a SiC whisker network structure inside the material,thereby enhancing the microstructure of the material.In oxidation experiments,compared to the use of α-Al2O3 as an additive,adding aluminum dross is more conducive to the formation of the mullite phase.After adding aluminium dross,the appropriate amount of liquid phase generated at high temperature can effectively fill the pores of the oxide layer on the material surface,thereby improving the material's oxidation resistance,erosion resistance,and thermal shock resistance.Specifically,the oxidation index decreases from 88％ to 52％,the corrosion index experiences a marked reduction,and the residual strength ratio increases from 87％ to 97％.关键词
二次铝灰/低碳Al2O3-C耐火材料/显微结构/显气孔率/抗氧化性能/抗侵蚀性能/抗热震性能Key words
aluminum dross/low carbon Al2O3-C refractory material/microstructure/apparent porosity/oxidation resistance/erosion resistance/thermal shock resistance分类
化学工程引用本文复制引用
乔畅通,余超,邓承继,王萱,丁军,刘正龙,祝洪喜..二次铝灰对低碳Al2O3-C耐火材料显微结构与性能的影响[J].硅酸盐通报,2025,44(5):1878-1887,10.基金项目
国家自然科学基金联合基金项目(U20A20239) （U20A20239）
国家自然科学基金(52402034) （52402034）
