... insulation material to take place of ceramic fiber and firebricks. The Aluminum Oxide Ceramic Foam Insulation was manufactured based on ... of nano-particles and Sol-Gel casting, the Aluminum Oxide Ceramic Foam Insulation, with ultra-light weight, excellent compressive ... , polycrystal mullite, alumina or other kinds of ceramic fiber, Aluminum Oxide Ceramic Foam Insulation is a brand new refractory & ...