Today, let's learn about steel fiber refractory castables. In simple terms, steel fiber refractory castables are a kind of "high temperature resistant concrete" that enhances crack resistance and durability by adding steel fibers. The steel fiber refractory castables produced by our company do not need to be sintered and formed, and can be directly cast for use. It combines the high temperature resistance of traditional refractory materials with the toughening and crack resistance of steel fibers, which can solve the problems of easy cracking and short life of traditional refractory materials, and is especially suitable for environments with dual challenges of high temperature + mechanical stress.
Core features
Composition:
Matrix material: refractory aggregates and fine powders such as high-alumina bauxite, corundum, and silicon carbide, providing high temperature resistance.
Steel fiber: stainless steel (such as 304, 310S) or heat-resistant alloy fiber (such as Cr-Ni) to improve tensile and impact resistance.
Binder: aluminate cement, phosphate, etc., to ensure the strength of the material after hardening.
Additives: water reducer, explosion-proof fiber, etc., to optimize construction performance and burst resistance.
Core function:
Resistance to thermal shock: steel fibers bridge cracks and reduce material spalling caused by sudden temperature changes.
Enhance toughness: resist mechanical shock and wear (such as metallurgical blast furnaces, cement kilns, etc.).
Extended life: 20%-40% longer than ordinary castables under harsh working conditions.
Typical applications:
Metallurgical industry: blast furnace iron ditch, ladle lining.
Cement industry: rotary kiln mouth, preheater.
Energy field: circulating fluidized bed boilers, waste incinerator linings.