Thermodynamic Evaluation of Cr_2O_3-Al_2O_3 Refractory Corrosion by Smelting Reduction Ironmaking Slag  

作　　者：ZHAO Shixian CAI Binli LI Pengtao SUN Honggang WANG Gang 

机构地区：[1]State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.

出　　处：《China's Refractories》2015年第2期6-10,共5页中国耐火材料（英文版）

基　　金：supported by Preliminary Research Project for National Basic Research Program of China ( 2012CB724607 )

摘　　要：The interfacial reactions of Cr2O3- Al2O3 refractory materials with smelting reduction ironmaking slag were investigated by thermodynamic modeling. The calculation results indicated that different spinel phases were produced after the interactions between the slag and three types of refractory materials（ 10Cr2O3- 90Al2O3,50Cr2O3- 50Al2O3 and 90Cr2O3- 10Al2O3） at 1 500℃. Increased contents of Al2O3 and Cr2O3in the remained liquid slag after interaction implied the dissolution of refractory. Thermodynamic modeling predicted that the process of dissolution might lead to much deeper penetration into the refractory materials by the present compositional slag. Accordingly,corrosion testing was also conducted to validate the thermodynamic prediction.The interfacial reactions of Cr2O3- Al2O3 refractory materials with smelting reduction ironmaking slag were investigated by thermodynamic modeling. The calculation results indicated that different spinel phases were produced after the interactions between the slag and three types of refractory materials（ 10Cr2O3- 90Al2O3,50Cr2O3- 50Al2O3 and 90Cr2O3- 10Al2O3） at 1 500℃. Increased contents of Al2O3 and Cr2O3in the remained liquid slag after interaction implied the dissolution of refractory. Thermodynamic modeling predicted that the process of dissolution might lead to much deeper penetration into the refractory materials by the present compositional slag. Accordingly,corrosion testing was also conducted to validate the thermodynamic prediction.

关 键 词：chrome oxide-alumina refractory CORROSION thermodynamic SPINEL 

分 类 号：TQ175.1[化学工程—硅酸盐工业]