氧化铝微粉对刚玉质浇注料性能的影响  

Effect of alumina powder on the performance of corundum based castable

作　　者：吉秀梅 屈金栋 魏合意 Ji Xiumei;Qu Jindong;Wei Heyi(Tangshan Strong Refractories Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]唐山时创高温耐火材料股份有限公司,唐山063000

出　　处：《耐火与石灰》2020年第5期18-19,共2页Refractories & Lime

摘　　要：以板状刚玉为主要原料,以铝酸钙水泥为结合剂,研究了4种不同的氧化铝微粉对刚玉质浇注料性能的影响。结果表明:(1)使用氧化铝微粉CTC-55,由于CTC-55粒度分布为多峰,能充分的填充到骨料之间、骨料和细粉之间的空隙中,因此同样加水量刚玉浇注料流动性更好;(2)使用氧化铝微粉CTC-55,1 500℃烧后强度较高,多峰的CTC-55有较好的填充性,降低了浇注料的气孔率,同时可促进烧结,干坯烧后强度相应提高。Using tabular corundum as main raw material and calcium aluminate cement as binder,the effects of four kinds of alumina powder on the properties of corundum based castable were studied.The results firstly show that with the particle size multipeak distribution,alumina powder CTC-55 can fully filling the gaps between aggregates,aggregates and fine powder,and the fluidity of the castable with the same amount of water is better than the other three;secondly the castable with alumina powder CTC-55 has higher strength after sintered at the temperature of 1500℃,because the CTC-55 has better filling ability,which can reduce the porosity of castable,promote sintering and improve the dryer and sintered strength.

关 键 词：刚玉质浇注料 氧化铝微粉 流动性 强度 

分 类 号：TQ175.12[化学工程—硅酸盐工业]