Rongsheng Refractories Group
The main raw material for the manufacture of high -grain insulating bricks is a boxing, and the content of aluminum oxide in high -grain insulating bricks is more 48%. Currently, refractory bricks with a high content of clay are very popular as a variety of heat -insulating refractory bricks, which is characterized by high compressive strength, low thermal conductivity and good thermal insulation characteristics.
The composition of highly aluminum polished insulating brick
Physical and chemical indicators:
| Subject | Index | |||||
| LG-1.2 | LG-1.0 | LG-0.8 | LG-0.7 | LG-0.6 | LG-0.5 | |
| Al2O3 % | ≥48 | |||||
| Fe2O3 % | ≤2 | |||||
| Bulk density g/cm3 | ≤1.2 | ≤1.0 | ≤0.8 | ≤0.7 | ≤0.6 | ≤0.5 |
| Cold crush strength,MPa | ≥4.5 | ≥3.5 | ≥2.5 | ≥2.2 | ≥1.6 | ≥1.2 |
| Constant linear rate of change,% | 1400℃×12h ≤-2 | 1350℃×12h ≤-2 | 1250℃×12h ≤-2 | |||
| Thermal conductivity W/(m·K) 350±25℃ | ≤0.55 | ≤0.50 | ≤0.35 | ≤0.30 | ≤0.25 | ≤0.20 |
Features of high -grain isolation brick
- Slightly high heat resistance.
- Resistant to acid and alkaline corrosion.
- Good thermal stability.
- Good insulation properties.
- Low thermal conductivity.
- Significant energy saving effect.
Use of high alumina fire bricks
Fire -controlled bricks with a high content of clay have a good heat -insulating effect and can be used as a thermal insulation layer of thermal contact furnaces and hot domain furnaces. Paul and light bricks with a high content of alumina are also widely used in coke ovens and thermal equipment of heating furnaces in the metallurgical industry.
Precautions when using brick with a high content of clay
Repository: Bricks with a high content of alumina should be stored in a dry and ventilated place, avoiding contact with water or moisture, so as not to influence its characteristics. Avoid contact with acid and alkaline substances to avoid chemical reactions.
Cutting:: High alumina bricks can be cut with mechanical equipment or by hand, but be careful, so as not to break or crack when cutting, Otherwise, this will affect the effect of its use.
Installation: High -grain bricks must be attached with high -temperature refractory glue or fire -water solution. Before installation, the surface must be cleaned of dust and dirt., to ensure strong adhesion of the glue or mortar.
service: Bricks with a high content of clay can be subjected to mechanical impacts or chemical effects during use, therefore regular maintenance is required. If it is cracked or damaged, it should be replaced promptly.
Delivery of high alumina insulation bricks
After receiving the order, the factory will immediately produce it and, as a rule, will send within 7-12 days. Adjusting the size of high alumina insulation brick will take longer.
Introduction Rongsheng
Rongsheng company already exists 15 years and exported to more than 80 countries, such as Russia, Indonesia, South Africa, Egypt and other countries. Raw materials, produced by a refractory materials plant, includes fire brick, insulation brick, refractory raw materials, metallurgical raw materials, etc.. d., which are widely used in steel industry, ferrous metallurgy, non-ferrous metallurgy, glass industry and energy. industry.
