硅线石对矾土基浇注料性能的影响  

Effect of sillimanite on properties of bauxite based castables

作　　者：李培佳[1] 李林[1] 贺智勇[1] 彭小艳[1] 杨粉荣[1] 

机构地区：[1]中国钢研科技集团有限公司钢铁研究总院,北京100081

出　　处：《耐火材料》2011年第3期166-169,共4页Refractories

摘　　要：以矾土为主要原料，加入硅线石粉、SiO2微粉、活性Al2O3微粉、水泥等制备矾土基浇注料，研究了硅线石加入量（质量分数分别为0、4％、8％和12％）对浇注料常温性能和抗渣侵蚀性能的影响。结果表明：随着硅线石加入量的增加，浇注料的常温强度和体积密度下降，显气孔率增大；在浇注料中加入硅线石有助于提高试样的抗渣侵蚀性能，但加入质量分数大于8％时，试样抗渣侵蚀性能下降，渣渗透深度和侵蚀深度增加；硅线石加入质量分数为4％～8％时，浇注料的综合性能较好。Bauxite based castables was prepared using bauxite as main starting material,and adding sillimanite powder, SiQ2 micropowder, active Al2O3 micropowder, and cement. The influences of sillimanite additions（ mass percent：0,4% ,8% ,and 12% ）on cold properties and slag resistance of bauxite based castables were in- vestigated. The result shows that： （ 1 ） the cold strength and bulk density of castables decrease while the apparent porosity increases with the increase of the sillimanite addition （2）the sillimanite improves the slag resistance of bauxite based castables,but the slag resistance declines,and penetration depth and corro sion depth enlarge when sillimanite addition is over 8% （3）the castables shows the best performance with 4%-8% sillimanite.

关 键 词：矾土基浇注料 莫来石 刚玉 烧结 抗侵蚀性 

分 类 号：TQ175.732[化学工程—硅酸盐工业]