High-aluminum heat insulation casting material

The invention relates to a high-temperature-resistant material, in particular to a high-aluminum heat insulation casting material. The high-aluminum heat insulation casting material is prepared from the following raw materials in parts by weight: 5 to 10 parts of aluminum oxide with the particle diameter being 0.05 to 1mm, 25 to 40 parts of aluminum oxide with the particle diameter being 1 to 2mm, 46 to 50 parts of magnesite powder with the particle diameter being 1 to 1.5mm, 40 to 55 parts of peridotite powder with the particle diameter being 5 to 8mm, 5 to 10 parts of silicon powder with the particle diameter being 0.2 to 0.3mm, 10 to 20 parts of sintered corundum with the particle diameter being 0.15 to 0.2mm, 23 to 35 parts of powder polycarboxylate and 7 to 10 parts of calcium hexaluminate powder with the particle diameter being 0.05. The high-aluminum heat insulation casting material has the advantages of good high-temperature-resistant performance, high intensity and high hardening speed.