中间包镁质干式振动料抗渣性能研究  

Slag resistance of MgO based dry vibrating mix for tundish

作　　者：程鹏[1] 王玺堂[2] 彭云涛[1] 谢大勇[1] 

机构地区：[1]中冶武汉冶金建筑研究院有限公司,湖北武汉430081 [2]武汉科技大学材料与冶金学院,湖北武汉430081

出　　处：《耐火材料》2010年第5期359-361,共3页Refractories

摘　　要：以粒度为3-1、≤1、≤0.088 mm的中档烧结镁砂为主要原料,按骨料与基质的质量比65 35配料,选用糖、硅酸钠为复合结合剂制备了镁质干式振动料试样。采用静态坩埚法研究了糖、硅酸钠加入量和添加剂（分别为铝矾土粉,α-A l2O3粉）对干式振动料抗渣性能的影响。结果表明：1）糖、硅酸钠复合加入对镁质干式振动料抗渣性能不利,糖和硅酸钠加入量（w）分别为4%和2%时相对最好;2）镁质干式振动料的渣蚀过程以渗透为主;引入高铝矾土粉和α-A l2O3粉均可与镁砂（MgO）高温下反应生成的尖晶石（MA）可以显著提高干式振动料的抗渣性能。MgO based dry vibrating mix was prepared with medium grade sintered magnesia（3-1,≤1,≤0.088 mm） as main starting material and edible sugar-sodium silicate as binder.The mass ratio of aggregate and matrix is 65：35.The effects of additives（high alumina bauxite powder or α-Al2O3 powder） and sugar-sodium silicate binder on slag resistance of the mix were investigated by the static crucible method.The results show that：（1）edible sugar-sodium silicate binder harms the slag resistance of MgO based dry vibrating mix,and the optimum additions of sugar and sodium silicate are 4% and 2%,respectively;（2）the main slag corrosion of the mix is penetration;high alumina bauxite and α-Al2O3 in the matrix can improve the slag resistance,which mainly attributes to the formation of spinel.

关 键 词：干式振动料 中间包 环保型结合剂 抗渣性能 

分 类 号：TB3[一般工业技术—材料科学与工程]