PRODUCTION OF CARBON-CONTAINING REFRACTORY HAVING DEFINITE SHAPE

摘要

PURPOSE:To improve the compactness of a definite-shaped refractory having large size and high carbon content and to provide a process for producing a carbon-containing refractory having definite shape and remarkably improved durability. CONSTITUTION:The addition of a phenolic resin to refractory aggregate as a binder gives a molding material exhibiting sufficiently high strength at the initial stage of the drying process after molding by the cure-acceleration action of ferric chloride, aluminum chloride and stannous chloride added to the aggregate together with the phenolic resin. The swelling called as spring-back and the generation of crack can be prevented by this process to obtain a refractory having excellent corrosion resistance and spalling resistance.