In this system,adding suitable proportion of f-SiO_2 and f-Al_2O_3 powders is beneficial for forming the secondary mullite and improving the properties of castables.

• 掺入适当比例的氧化铝微粉和氧化硅微粉,有利于系统中二次莫来石的反应生成,可以改善浇注料的性能。