MgCa-SiC-C fireproof material and preparation method thereof

The invention discloses an MgCa-SiC-C fireproof material, belonging to the technical field of fireproof materials. The MgCa-SiC-C fireproof material comprises the following components by mass: 50-70% of electrically molten or sintered magnesium-calcium sand or magnesium-domolite sand granule, 10-20% of electrically molten or sintered magnesium sand fine powder, 5-17% of silicon carbonate, 5-15% of graphite, 1-10% of additive, and anhydrous resin bonder accounting for 3-5% of total mass percent of the electrically molten or sintered magnesium-calcium sand or magnesium-domolite sand granule, the electrically molten or sintered magnesium sand fine powder, the silicon carbonate, the graphite and the additive. The invention further discloses a preparation method of the MgCa-SiC-C fireproof material. The MgCa-SiC-C fireproof material can be applied to a high-temperature steel and iron metallurgy container, especially as an inner lining of a hot metal ladle for iron making, and can meet smelting requirements of the preprocessed hot metal ladle.