High-temperature-resistant iron runner castable and preparation method thereof

The invention relates to a high-temperature-resistant iron runner castable and a preparation method thereof. The high-temperature-resistant iron runner castable is prepared from the following components in parts by weight: 20 to 25 parts of high bauxite clinker, 35 to 40 parts of brown aluminum oxide, 22 to 25 parts of silicon carbide, 2 to 5 parts of carbon material, 2 to 3 parts of binding agent, 8 to 8.8 parts of ultrafine powder, 0.1 to 0.4 part of composite anti-explosion agent, 2 to 4 parts of antioxidant and 0.15 to 0.2 part of DF-401 water reducing agent. The composite anti-explosion agent comprises organic fibers and superfine metal aluminum powder, and the mass ratio of the organic fibers to the superfine metal aluminum powder is (1-2):(1-3). The antioxidant is metal silicon powder and boron carbide powder, and the mass ratio of the metal silicon powder to the boron carbide powder is (1-2):(1-3). Through the structural design of the high-temperature-resistant iron runner castable, the technical prob