钢纤维浇注料除具有常规的高温耐磨损性能外,因在其配料中加入了一定数量的耐热不锈钢纤维,防止了材料中骨料与基质在高温状态下产生的涨差,以及在启停炉时产生的温度梯度变化所产生的应力而导致炉墙破坏,同时,由于钢纤维的加入,使材料浇注后炉墙整体强度大大增强。
钢纤维浇注料广泛使用于水泥回转窑窑口、冷却机、喷煤管、分解炉、预热器等部位。在锅炉与炉膛的出口、顶部、侧墙等部位均被使用,在钢铁、冶金、化工和建材行业也被广泛的使用;在CFB锅炉中,常用于炉膛出口及侧墙、顶部、旋风分离器直段、旋风分离器顶、返料器等部位。
Steel fiber reinforced castable is made of high-quality bauxite clinker as aggregate, bauxite clinker and corundum fine powder as matrix, ultra-fine powder and other composite materials as binder and additive, plus stainless steel heat-resistant fiber. The product has the characteristics of high strength, good toughness, good thermal shock stability, anti peeling and wear resistance.
In addition to the conventional high temperature wear resistance, the steel fiber castable is added with a certain amount of heat-resistant stainless steel fiber to prevent the expansion difference between the aggregate and the matrix in the material at high temperature and the stress caused by the temperature gradient during the start-up and shutdown of the furnace, which leads to the damage of the furnace wall, The overall strength of the furnace wall is greatly enhanced after pouring.
Steel fiber castable is widely used in cement rotary kiln mouth, cooler, coal injection pipe, calciner, preheater and other parts. It is widely used in the outlet, top and side wall of boiler and furnace, as well as in iron and steel, metallurgy, chemical industry and building materials industry; In CFB boiler, it is often used in furnace outlet, side wall, top, straight section of cyclone separator, top of cyclone separator and return feeder.
指 标 | 普通类 | 高强类 | |||
Al2O3 不小于 | 70 | 83 | 70 | 80 | |
常温抗折强度Mpa不小于 | 110℃ | 9.0 | 9.0 | 10.0 | 12.0 |
1100℃ | 5.5 | 6.5 | 10.0 | 12.0 | |
常温耐压强度Mpa不小于 | 110℃ | 70 | 70 | 70 | 80 |
1100℃ | 40 | 50 | 70 | 80 | |
1100℃~室温水急冷急热循环 5次后抗折强度,Mpa不小于 |
4.5 | 5.5 | 5.0 | 5.0 | |
1100℃烧后线变化率,% | ±0.4 | 0.5 | 0.4 | 0.5 |