钛铁渣加入量对高铝矾土浇注料抗渣性能的影响

Effect of Titanium-iron Slag Addition on Slag Resistant Properties of High Aluminum Bauxite Castable

以钛铁渣部分替代高铝矾土,研究了钛铁渣加入量对浇注料烧结及抗渣侵蚀性能的影响。采用ICP和SEM等分析测试技术对浇注料试样进行了表征。结果表明:随着钛铁渣加入量的增大,浇注料试样的致密度增强,冷态强度增大,钛铁渣中的低熔相可促进试样的烧结;钛铁渣易与熔渣反应,增大熔渣的粘度,进而和原质层形成分界,阻止熔渣的进一步侵蚀与渗透;结合浇注料试样的荷重软化点温度与静态抗渣试样的微观形貌分析,钛铁渣加入量以40wt.%为宜。

High aluminum bauxite was partly replaced by titanium-iron slag and the effect of titanium-iron slag addition on the sintering and slag resistant properties of high aluminum bauxite castable was studied.Castable samples were characterized by ICP and SEM.The results showed that as more titanium-iron slag was added,the samples were denser and showed higher cold strength.Low melting phase in titaniumiron slag could promote the sintering of the samples;and titanium-iron slag was easy to react with the slag and increase its viscosity.It could be separated from the precursor layer to prevent the erosion and penetration of the slag;the combined analysis of the refractoriness under load and microstructure of the static slag resistance test samples indicated the optimum addition of titanium-iron slag was 40 wt.%.