骨料种类对铁水包用Al_(2) O_(3)-SiC-C砖性能的影响  

Effect of aggregate types on properties of Al_(2)O_(3)-SiC-C bricks for iron ladles

作　　者：高东升 聂建华[1] 蔡曼菲 梁永和[1] 张晓存 Gao Dongsheng;Nie Jianhua;Cai Manfei;Liang Yonghe;Zhang Xiaocun(The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)

机构地区：[1]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《耐火材料》2024年第1期19-24,共6页Refractories

基　　金：国家自然科学基金联合基金重点项目(U21A2058)。

摘　　要：骨料作为耐火材料的重要组成部分,决定着材料的各项性能。分别以粒度均为5~3、3~1和≤1 mm的高铝矾土、电熔棕刚玉、板状刚玉为骨料,以电熔白刚玉(≤0.045 mm)、SiC(≤0.075 mm)、活性α-Al_(2)O_(3)微粉(≤0.045 mm)和鳞片石墨(≤0.15 mm)等为基质,以热固性酚醛树脂为结合剂制备了Al_(2)O_(3)-SiC-C砖,研究了骨料种类(高铝矾土、电熔棕刚玉、板状刚玉)对Al_(2)O_(3)-SiC-C砖常温力学性能、高温力学性能和抗渣性能的影响。结果表明:以板状刚玉为骨料时,由于其较高的致密度和较低的杂质含量,使得Al_(2)O_(3)-SiC-C砖具有最优的高温力学性能和抗渣性能;以高铝矾土为骨料时,由于其较高的气孔率和杂质含量,导致试样高温力学性能和抗渣性最差。As an important part of refractory materials,aggregates determine the properties of materials.Al_(2)O_(3)-SiC-C bricks were prepared using bauxite,brown fused corundum or tabular corundum with particle sizes of 5-3,3-1 and≤1 mm as aggregates,white fused corundum(≤0.045 mm),SiC(≤0.075 mm),activeα-Al_(2)O_(3) powder(≤0.045 mm)and flake graphite(≤0.15 mm)as matrix,and thermosetting phenolic resin as the binder.The effects of the three aggregates on the cold and hot mechanical properties as well as the slag resistance of Al_(2)O_(3)-SiC-C brick were studied.The results show that the Al_(2)O_(3)-SiC-C bricks has the best hot mechanical properties and slag resistance when using tabular corundum as aggregates due to its higher density and lower impurity phase contents;and when bauxite is used as aggregates,the hot mechanical properties and slag resistance of the brick are worst due to the high porosity and impurity contents of bauxite.

关 键 词：高铝矾土 电熔棕刚玉 板状刚玉 Al_(2)O_(3)-SiC-C砖 

分 类 号：TQ175[化学工程—硅酸盐工业]