Non-wetting aluminum castable is an ultra-low-cement refractory castable specially for the aluminum industry; aggregates are selected from high alumina, mullite, brown corundum and white corundum. Special anti-aluminum-wetting additives (borates, barium-zinc composite agents) are added to the formulation to fundamentally suppress the wetting and penetration of molten aluminum and aluminum alloys into the furnace lining, eliminating aluminum buildup, crusting, sticking and slag accumulation. It is the preferred lining material for aluminum melting furnaces, holding furnaces and aluminum transfer systems.