Refractory soil is a product used from your home to the sky in space shuttle. All refractory materials such as refractory brick are based on refractory soil materials. This soil is used not only in bricks but also in other materials such as heat -resistant mortar, insulators, earthenware, ceramics, ceramic blankets and even ceramic tiles. In another example, spatial shuttle also uses refractory soil materials to withstand very high temperatures. The melting point of this soil is about 2 degrees Celsius or 2 degrees Fahrenheit.