[1] YI P, ZHAO P D, ZHANG D Q, et al. Preparation and characterization of mullite microspheres based porous ceramics with enhancement of in situ mullite whiskers［J］. Ceramics International, 2019, 45(12): 14517-14523.

[2] YAN W, WU G Y, MA S B, et al. Energy efficient lightweight periclase-magnesium alumina spinel castables containing porous aggregates for the working lining of steel ladles［J］. Journal of the European Ceramic Society, 2018, 38(12): 4276-4282.

[6] WANG S Y, QI X, QI D B, et al. Study on the properties of periclase-forsterite lightweight heat-insulating refractories for ladle permanent layer［J］. Ceramics International, 2022, 48(14): 20275-20284.

[14] YANG F K, LI C W, LIN Y M, et al. Effects of sintering temperature on properties of porous mullite/corundum ceramics［J］. Materials Letters, 2012, 73: 36-39.

[15] QI J T, YAN W, CHEN Z, et al. Preparation and characterization of microporous mullite-corundum refractory aggregates with high strength and closed porosity［J］. Ceramics International, 2020, 46(6): 8274-8280.

[17] CHEN Y Q, LIU G Q, GU Q, et al. Preparation of corundum-mullite refractories with lightweight, high strength and high thermal shock resistance［J］. Materialia, 2019, 8: 100517.