The fused cast refractories refers to products that are cast into a certain shape after the raw materials are melted at high temperature. It often uses electric arc furnaces to complete the high-temperature melting work. In addition, there are many types of fused cast refractory materials, the most common type is fused cast AZS block.
Parameter of KERUI Fused Cast AZS Block
Item | KR-AZS41 | KR-AZS36 | KR-AZS33 |
---|---|---|---|
SiO2, % | 12 | 13 | 15 |
Al2O3, % | The Remainder | The Remainder | The Remainder |
ZrO2, % | 41 | 36.5 | 33.5 |
Fe2O3+TiO2+CaO+MgO+Na2O+K2O, % | ≤2.0 | ≤2.0 | ≤2.0 |
Bulk Density, g/cm3 | 4.05 | 3.9 | 3.8 |
Apparent Porosity, % | 0.6 | 0.8 | 0.7 |
Initial Precipitation Temperature of Vitreous Phase, ℃ | 1400 | 1400 | 1400 |
Vitreous Phase Exudation, % (1500℃*4h) | 1.5 | 2.3 | 2.0 |
Anti-molten Glass Erosion Speed Under Static Condition, mm/24h (1500℃*36h, ordinary soda lime glass) | 1.2 | 1.3 | 1.4 |
Bubble Release Rate, % (1300℃*10h, ordinary soda lime glass) | 0.6 | 1.0 | 1.2 |
Production Details of Fused Cast AZS Block
Fused Details of AZS Brick
The raw materials of AZS brick are pure alumina powder and zircon sand containing zirconium oxide and silicon dioxide. These raw materials need to melt at high temperature in an electric arc furnace and then cast.
Casting Details AZS Brick
In order to achieve the best effect in different parts of the kiln, there are several different casting methods. You can learn more details here.
Method | Regular Cast | Tilt Cast | Void Free | End Cut |
Code | PT | QX | WS | ZWS |
Description | There is void below the casting gate. | Void is located at one end of the AZS brick, tilt angle 30°-35°, which can bring a greater use value. | Casting size is larger than the required size. Cut off the void after cooling. | Casting size is larger than the required size. Cut off most of the void after cooling. |
Application | Areas with less corrosion like the roof of the furnace. | Pool wall. | Areas with serious corrosion like liquid flow holes, port corner, pavements… | Pool wall. |
Benefits of Fused Cast Refractories
Compared with sintered refractories, fused cast refractories has smaller porosity and higher density. This property makes AZS bricks more resistant to physical and chemical corrosion in the kiln, so the product quality is also better.
Kerui Refractory adopts advanced as well as strict production line for fused cast AZS brick, including raw materials, melting, casting, cooling and other process. Here you can see the details.
Applications of KERUI AZS Block
Main Application in Glass Furnace
Kerui provides different models and different production methods of cast alumina bricks. They are suitable for different parts of glass kilns. According to statistics, about 70% of the parts in glass kilns require AZS bricks. Because this product can not only withstand the harsh kiln environment, but also improve the quality of glass products.
Wide Application in Other Industry
Due to its excellent compactness and erosion resistance, AZS bricks are mainly used in the key parts of high-temperature industrial metallurgical furnaces such as steel, metallurgy, electronics, petrochemicals, fertilizers, non-ferrous metals, refractory materials, such as glass furnaces, glass fiber furnaces, garbage incinerators, electric furnaces, etc. Welcome to learn more information on Kerui Youtube.
Step into Fused Cast Refractory Factory
Complete Production Equipment: Automatic batching system, PLC control system,
International Certificates: The fused cast alumina block as well as production line has ISO/CE/SGS certificates;
Wide Product Range: Except for fused cast AZS brick, there are also fused cast mullite brick, corundum brick, magnesia brick and many other products.
R&D: Professional R&D team, obtained invention patent and utility model patent certificates;