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为了提高高炉含钛物料护炉的效果,以现场含钛高炉渣和人工合成含钛炉渣为原料,通过静态坩埚抗渣试验,利用钙平衡法计算渣量的变化,就温度、反应时间、二元碱度等因素对Al2O3陶瓷杯侵蚀的影响及侵蚀机理进行研究。结果表明,提高温度、延长反应时间,含钛炉渣对Al2O3陶瓷杯的侵蚀加剧;增加炉渣二元碱度,侵蚀减缓。含钛炉渣对Al2O3陶瓷杯侵蚀的机理为:在高温熔融状态下,炉渣中的CaO和SiO2会与陶瓷杯原砖层的Al2O3发生反应,生成CA6、C2AS和CAS2等矿物并不断溶入炉渣中,从而使陶瓷杯不断受到侵蚀。在陶瓷杯原砖层附近形成更多的MA和CA2等高熔点矿物,会增大炉渣黏度,进而减缓炉渣对陶瓷杯侵蚀。
In order to improve the effect of retaining material containing titanium in blast furnace, the change of slag amount was calculated by calcium balance method through the static crucible slag resistance test using the titanium-containing blast furnace slag and the artificial titanium-containing slag as raw materials. The temperature, reaction time, Elemental alkalinity and other factors on the erosion of Al2O3 ceramic cup and erosion mechanism. The results show that increasing the temperature and prolonging the reaction time, the corrosion of the Al2O3 ceramic cup by the titanium-containing slag is aggravated; the binary alkalinity of the slag is increased and the erosion is slowed down. The mechanism of erosion of Al2O3 ceramic cup by titanium-containing slag is that CaO and SiO2 in slag react with Al2O3 in the original brick layer of ceramic cup to form minerals such as CA6, C2AS and CAS2 and continue to dissolve in the slag at high temperature. , So that ceramic cups continue to be eroded. The formation of more high-melting minerals, such as MA and CA2, in the vicinity of the original ceramic brick increases the viscosity of the slag, thereby reducing the erosion of the ceramic cup by the slag.