| abstract |
An applying method excellent in applicability of a monolithic refractory to a molten metal vessel, a molten metal processing apparatus, or a high-temperature furnace and in applied body life as compared to conventional spraying methods and a monolithic refractory are disclosed. Applying water is added in advance to a refractory ultrafine powder of volatile silica and/or calcined alumina stored in a hopper and the mixture is kneaded. A monolithic refractory is compounded with a dispersant and a refractory aggregate containing 1-30 mass% of the refractory ultrafine powder mixed with the applying water. The compounded monolithic refractory is fed to a portion below the hopper while adding a quick setting agent, and centrifugally projected. Since the monolithic refractory is fed to the portion below the hopper, the fluidity imparted to the monolithic refractory can be of a low degree. Therefore, the amount of water for application can be reduced, and a local application can be facilitated by projecting the monolithic refractory in a predetermined range of angle. |