Steel fiber reinforced refractory casable
Classification:
Product Introduction
Steel fiber reinforced refractory castables are a type of refractory material that improves its properties by adding steel fibers to the refractory castable. Here are some key facts about steel fiber reinforced refractory castables:
1. Definitions and Composition:
Steel fiber reinforced refractory castable is a refractory casable prepared by refractory aggregates, powders, binders, admixtures and steel fibers (heat-resistant stainless steel fibers or heat-resistant steel fibers, the content is generally 0.6%~2.5%). This material has the characteristics of high strength, abrasion resistance and thermal shock resistance.
2. Performance Improvements:
Improve mechanical strength: After adding steel fiber, the compressive, flexural and tensile strength of refractory castable are relatively enhanced, especially at medium temperature, the reinforcement of steel fiber is particularly important.
Thermal shock resistance: Steel fibers improve the relative toughness of the castable and improve the thermal shock resistance.
Improved toughness and mechanical impact resistance: Steel fibers enhance the toughness of refractory castables and improve mechanical impact resistance.
Inhibition of shrinkage: Steel fibers can inhibit shrinkage of refractory castables after curing, drying and heat treatment, and reduce cracking.
3. Applications:
Steel fiber reinforced refractory castable is suitable for masonry with mechanical vibration, thermal shock, wear and other parts at high temperature, and is widely used in steel, metallurgy, chemical and building materials industries. In CFB boilers, it is often used in furnace outlets, side walls, tops, cyclone separator straight sections, cyclone separator tops, returners and other parts.
4. Construction Method:
The method of using steel fiber reinforced refractory castable is basically the same as that of concrete, and it is necessary to select the formula and raw materials, and after mixing and processing evenly, it is compacted with a vibrating rod, and then cured and heated.
5. Technical Requirements:
The technical requirements of steel fiber reinforced refractory castables include physical and chemical indicators, such as Al2O3 content, etc., according to different performance indicators, steel fiber reinforced refractory castables are divided into three categories: F1, F2 and F3.
In summary, steel fiber reinforced refractory castables have important value in high-temperature industrial applications due to their excellent mechanical properties and thermal shock resistance.
| Projects | Physical and chemical indicators | |||
| F1 | F2 | F3 | ||
| Al2O3/% | ≥ | 80 | 70 | 65 |
Flexural strength at room temperature/Mpa ≥ | 110°C×24h after drying | 12.0 | 10.0 | 9.0 |
| 1110°C×3h after burning | 12.0 | 10.0 | 6.5 | |
Compressive strength at room temperature/Mpa ≥ | 110°C×24h after drying | 90 | 80 | 70 |
| 1110°C×3h after burning | 90 | 80 | 50 | |
| Heating Permanent Line Change/% | 1110°C×3h after burning | ±0.5 | ±0.5 | ±0.5 |
Key words:
Steel fiber reinforced refractory casable
Refractory castables
Related Products
Product inquiry