The invention discloses an aluminum-
silicon castable prepared by adjusting the aggregate ratio and a preparation method thereof, and the aluminum-
silicon castable comprises the following raw materials in percentage by
mass: 35-40% of
calcium aluminate cement, 1-4% of floating beads, 10-15% of sinking beads, 3-6% of
silicon micro
powder, 20%-32% of
perlite aggregate, and 15%-25% of ceramsite aggregate. According to the aluminum-silicon castable by adjusting the aggregate proportion and the preparation method of the aluminum-silicon castable, the
perlite is used as the aggregate, so that the aluminum-silicon castable is light, porous, environment-friendly,
pollution-free, capable of absorbing sound and
noise, heat-insulating, non-combustible, good in free-running property, excellent in
compressive strength and the like, the fluidity of the castable can be remarkably improved by adding the electric
smelting ceramsite sand, the strength is improved, and the
sintering shrinkage is reduced; and the composite aggregate
perlite and the
capacitor ceramsite sand are added, so that performance advantages are complementary, and the performance of the aluminum-silicon castable is improved.