It`s made from bauxite , corundum , fused magnesite , flake graphite , spinel , resin binder and anti-oxidant. AMC Brick for LadleIt`s made from bauxite , corundum , fused magnesite , flake graphite , spinel , resin binder and anti-oxidant. It has high bulk density, high strength and good corrosion resistance. Used for side wall and bottom.