Tundish cover castable and preparation method thereof

The invention provides a tundish cover castable. The tundish cover castable comprises bauxite aggregate, fly ash ceramsite, floating beads, fly ash fine powder, bauxite fine powder, an antioxidant, calcium aluminate cement, silica powder, a retarding type water reducing agent, rho-Al2O3 micro powder and an anti-explosion agent. The invention also provides a preparation method of the tundish cover castable. The tundish cover castable has high strength, good thermal shock resistance and anti-stripping performance, cost can be reduced economically, benefits can be improved economically, and the problems of tundish cover material falling, oxidation stripping and the like are solved in performance. 本发明提供了一种中间包盖浇注料，包括：铝矾土骨料、粉煤灰陶粒、漂珠、粉煤灰细粉、铝矾土细粉、抗氧化剂、铝酸钙水泥、硅微粉、缓凝型减水剂、ρ-Al2O3微粉、防爆剂。本发明还提供了所述中间包盖浇注料的制备方法。本发明所述的中间包盖浇注料，具有较高的强度、良好的抗热震性和抗剥落性能，在经济上可降低成本提高效益，在性能上解决中间包盖掉料、氧化剥落等问题。