Introduction and Characteristics of Steel Fiber Refractory Castables

Steel fiber refractory castables are also called high-aluminum steel fiber-reinforced refractory castables. They are commonly used refractory castables for furnace outlets and side walls, tops, cyclone separator straight sections, cyclone separator tops, returners, and other parts. They are mainly composed of refractory aggregates, steel fibers, powders, binders, admixtures, water, or other liquid materials. They have the characteristics of wear resistance, acid resistance, alkali resistance, high-strength heat insulation, high strength, and high thermal conductivity.

Steel fiber refractory castables add a certain amount of heat-resistant stainless steel fibers to its ingredients, which prevents the expansion difference between aggregates and matrix in the material under high-temperature conditions, and the stress caused by the temperature gradient changes when starting and stopping the furnace, which leads to the destruction of the furnace wall. At the same time, due to the addition of steel fibers, the overall strength of the furnace wall is greatly enhanced after the material is cast.

Characteristics of steel fiber refractory castables

1. Inhibit the shrinkage of castables during curing, baking, and high-temperature use, which affects air tightness;

2. Improve the mechanical impact resistance and mechanical strength of castables;

3. Improve the thermal shock resistance of castables;

4. Improve the thermal spalling resistance of castables.

The above is the introduction and characteristics of steel fiber refractory castables. From the price of steel fiber castables on the market, its price is relatively low compared to other castables, so it is widely used in various industries. Its excellent performance and relatively low cost of use have made steel fiber castables a great development in the refractory industry.