High-strength refractory casable
Classification:
Product Introduction
High-strength refractory castable is a kind of refractory material with refractory aggregate and powder as the main raw material and binder as the binder. Here are its main features and applications:
First, the main features
1. High temperature stability: It can withstand the long-term heat load of the high temperature furnace and is not easy to be deformed and damaged.
2. High strength: It has excellent compressive strength at room temperature and high temperature to maintain the stability of the structure.
3. Good wear resistance: At high temperature, it can maintain high hardness and wear resistance, effectively prolonging the service life of the furnace and equipment.
4. Excellent corrosion resistance: It has good resistance to chemical media such as acid and alkali, and can maintain stable performance in harsh working environments.
5. Convenient construction: It has good fluidity and plasticity, easy to pour and form, and convenient for construction.
6. Energy saving and environmental protection: Compared with traditional refractory bricks, it has lower energy consumption and pollution emissions, which is in line with the development trend of green environmental protection.
Second, the field of application
High-strength refractory castables are widely used in the masonry of furnace linings, kiln linings and other high-temperature equipment in high-temperature industrial fields such as metallurgy, electric power, chemical industry, glass, ceramics, etc. Specific applications include:
Iron and steel smelting furnace: used in furnace lining and tap trench and other parts because of its high temperature stability and wear resistance.
Cement rotary kiln: used for kiln lining because of its high temperature stability and corrosion resistance.
Glass furnaces: used in kiln linings due to their resistance to high temperatures and chemicals.
Ceramic firing furnace: used for kiln lining because of its high temperature stability and structural strength.
3. Technological development
With the advancement of science and technology, the performance and application fields of refractory castables are also expanding. Future trends include improved high-temperature performance, enhanced chemical resistance, enhanced environmental friendliness, and expanded application areas.
Fourth, quality control
In the construction process, it is necessary to strictly control the water-cement ratio of the refractory castable, and the water content of the damp aggregate should be determined, and the water consumption should be adjusted accordingly. At the same time, it needs to be manufactured according to the design mix ratio, and the allowable error of the measurement of aggregate is 3%, and the allowable error of the measurement of coagulant, water and various cementing materials and powders is 2%. In addition, technical preparations should be made before construction, to understand the supply situation of material manufacturers, to fully understand the varieties and specifications of pouring materials, construction methods, and to formulate a reasonable construction period.
In summary, high-strength refractory castables play an important role in the field of high-temperature industry due to their excellent properties, and with the development of technology, their application range and performance will continue to expand and improve.
| Projects | Physical and chemical indicators | ||
| GQ-92 | GQ-85 | ||
| （Al2O3+SiO2）/% | ≥ | 92 | 85 |
| CaO/% | ≤ | 4 | 4 |
Compressive strength at room temperature/Mpa ≥ | After drying at 110°C × 24h | 80 | 60 |
| After burning at 1100°C × 3h | 100 | 70 | |
| After burning at 1500°C × 3h | 120 | 100 | |
Flexural strength at room temperature/Mpa ≥ | After drying at 110°C × 24h | 8 | 6 |
| After burning at 1100°C × 3h | 9 | 7 | |
| After burning at 1500°C × 3h | 10 | 9 | |
Heating Permanent Line Change/% ≤ | After burning at 1100°C × 3h | ±0.5 | ±0.5 |
| After burning at 1500°C × 3h | ±0.5 | ±0.5 | |
Bulk density/(g/cm3) ≥ | After drying at 110°C × 24h | 2.9 | 2.85 |
Key words:
High-strength refractory casable
Refractory castables
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