Alumina silicon carbide carbon (Al2O3-SiC-C) castable

Alumina silicon carbide carbon (Al2O3-SiC-C) castable

Product Parameters

As the name suggested, Al2O3-SiC-C castable is composed of corundum or high alumina clinker, silicon carbide, carbon, binder and additives. Alumina silicon carbide carbon castable is mainly used to cast the inner lining of blast furnace tapping spout, so it is also called tapping spout refractory castable. When main aggregate material is corundum, it is called corundum silicon carbide carbon castable. When high alumina clinker is main aggregate, it is called high alumina silicon carbide carbon castable.

Corundum used to prepare this kind of castable is mainly fused corundum, which’s carbon content is less than 0.10%. Because carbon in corundum usually exists in the form of Al4C3, which will react with water and produce methane and Al(OH)3 and make corundum pulverized. So the lower the carbon content is, the better the quality is, or the lining will crack or spall during heating.
Al2O3-SiC-C castable has weak permeability, and is apt to crack during heating due to drastic water vaporization. So antidetonant such as aluminum powder, antidetonant fibers, aluminum lactate and so on. But the quantity of antidetonant should be strictly controlled to avoid the decrease of bulk density, strength, corrosion resistance ability and scouring resistance ability.

It can be used in waste incinerator, blast furnace, cement kiln decomposer, rotary kiln grate cooler and other parts, fluidized bed furnace, Xunhua fluidized bed boiler and other thermal equipment and kilns.