Influence of Fused CaZrO3 Addition on Properties of Chrome-free Castables for RH Degassers

3rd International Conference on Advanced Materials Research and Applications

Zhu, X.W.^1 ; Liang, Y.H.^1 ; Nie, J.H.^1 ; Yue, P.^1 ; Cui, R.Q.^1

Hubei Province Key Laboratory of High Temperature Ceramic and Refractory, Wuhan University of Science and Technology, Wu Han

430081, China^1

关键词: Apparent porosity;    Comprehensive performance;    Micropowders;    Operating condition;    Slag erosion resistance;    Slag resistance;    Volume density;    Water-reducing agents;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/170/1/012027/pdf
DOI  :  10.1088/1757-899X/170/1/012027

来源: IOP

【 摘 要 】

This thesis considered specific operating conditions of RH degassers, using corundum and spinel as the main raw material, adding proper micropowder and the efficient compound water reducing agent, discussed the influence of fused CaZrO3 addition on RH degassers used chrome-free castable's properties, which includes the castable's strength, permanent line rate, wear resistance and performance of the slag resistance. The results showed: (1) Adding proper fused CaZrO3 can improve the strength of castable and wear resistance;(2) With the increase of the content of CaZrO3, volume density of castable declined slightly, apparent porosity increases, the line rate increased obviously;(3) With the increase of the amount of CaZrO3, slag erosion resistance of castable declined;(4) From the perspective of the comprehensive performance of castable, fused CaZrO3 suitable addition amount of 2 ∼ 4%.