| 摘要 |
PROBLEM TO BE SOLVED: To remarkably reduce the flow resistance at the time of casting or pressing in execution and remarkably improve the execution efficiency by compounding a spherical refractory powder having a specific bulk density and a specified particle diameter with a refractory aggregate in a specific proportion. SOLUTION: This monolithic refractory is obtained by compounding a spherical refractory powder having >=1.0 and <=3.0 g/cm<3> bulk density and >=0.1 and <=2.0 mm particle diameter in an amount of >=10 and <=35 wt.% based on a refractory aggregate therewith. A hollow particle or a spherical particle undergoing the granulating treatment is used alone or mixed for use. Al2 O3 , MgO, Cr2 O3 , spinel, mullite, zircon, ZrO2 and the like are cited as the material of the spherical refractory powder. Magnesia, dolomite, magnesia-chrome, picrochromite, spinel, alumina, alumina-silica, silica, zircon, zirconia, carbon and the like are cited as the refractory aggregate. |
