Slag Corrosion Resistance of MgO-ZrO_2 Refractories  

作　　者：YUAN Lin1,CHEN Songlin1,2,ZENG Luju1,LIU Xijun1,WU Xingsheng1,SUN Jialin2 1 Ruitai Materials Technology Co. Ltd. ,China Building Materials Academy,Beijing 100024,China 2 School of Materials Science and Engineering,University of Science and Technology Beijing, Beijing 100083,China 

出　　处：《China's Refractories》2012年第1期17-21,共5页中国耐火材料（英文版）

摘　　要：Slag corrosion resistance of MgO -ZrO2 refractories was inrestigated ill this work. The resuhs indicate that in a non-oriented electric steel slag systenl with a high ratio of ealci^t to silica, the slag resistance of MgO - ZrO, refractories can be described as flllows ： ZrO2 reacts with GtO .forming calcium zireonate compound which strengthens the material and blocks the channel of the slag infihration ; however, in an oriented electric steel slag system with a high concentration of silica and the low ratio of calcia to silica, the slag corrosion resistance ofM gO-ZrO： refractories is different ; ZrO2 reaets with CaO forming the ealcium zirconate and simultaneously one more product C2S as well; C2S cam improve corro- sion resistance by blinding pore and enhancing slag viscosity; therefore, it is expected to be the major reason for the enham＇ed corrosion resistance observed for MgO-ZrO2 refractories.Slag corrosion resistance of MgO -ZrO2 refractories was inrestigated ill this work. The resuhs indicate that in a non-oriented electric steel slag systenl with a high ratio of ealci^t to silica, the slag resistance of MgO - ZrO, refractories can be described as flllows ： ZrO2 reacts with GtO .forming calcium zireonate compound which strengthens the material and blocks the channel of the slag infihration ; however, in an oriented electric steel slag system with a high concentration of silica and the low ratio of calcia to silica, the slag corrosion resistance ofM gO-ZrO： refractories is different ; ZrO2 reaets with CaO forming the ealcium zirconate and simultaneously one more product C2S as well; C2S cam improve corro- sion resistance by blinding pore and enhancing slag viscosity; therefore, it is expected to be the major reason for the enham＇ed corrosion resistance observed for MgO-ZrO2 refractories.

关 键 词：corrosion resistatlce mechanism magne-sia-zirconia brick ： RH degasser 

分 类 号：TQ175.1[化学工程—硅酸盐工业]