| 摘要 |
PURPOSE:To improve durability at parts having large temperature difference in use and to eliminate drying after execution by using refractory aggregate, refractory fine powder, alumina cement, water reducing agent, metal Al and pulp fibers adjusted to proper particle size. CONSTITUTION:55-75wt.% one or more refractory aggregates such as alumina, silica or agalmatolite are blended with 20-30wt.% refractory fine powder having <=74mum particle diameter and 5-20wt.% alumina cement to give 100wt.% blend, which is mixed with 0.01-0.1wt.% (outer percentage) wt.% water reducing agent such as sodium beta-naphthalenesulfonate 0.01-0.1wt.% metal Al and 0.1-3wt.% (outer percentage) pulp fibers having 0. 5-10mm length. |
