| 摘要 |
PURPOSE:To obtain a carbon-containing refractory exhibiting excellent thermal shock resistance and high mechanical strength even after the carbonization of an organic binder by dispersing a phenolic resin fiber as an organic binder. CONSTITUTION:A refractory aggregate composed mainly of carbon and containing MgO, Al2O3, SiC, etc., as other main components is prepared beforehand. The weight ratio of the refractory aggregate to the carbon is preferably about (50-100):(50-0). The objective carbon-containing refractory can be produced by dispersing phenolic resin fibers in the above refractory aggregate. Various commercially available phenolic resin fibers can be used in the above process, however, fibers having an outer diameter of 2-100mum and a length of about 0.1-50mm are preferable. Since the obtained carbon-containing refractory has the above-mentioned characteristics, it is especially suitable as a lining material for charging wall of converter, hot spot of electric furnace, etc., or as a casting nozzle. |
