Silica Bricks for Hot Blast Furnace, manufactured by Xintai Refractory, are designed to perform under extreme heat in the high-temperature parts of blast furnaces. With a SiO₂ content of 95% or more, these bricks are ideal for applications in hot blast stoves, checker chambers, vaults, and furnace walls. Capable of enduring temperatures up to 1710ºC, they provide excellent durability, thermal conductivity, and resistance to thermal shock.
Engineered for superior performance, Xintai’s silica bricks offer low creep, minimal expansion, and high refractoriness, making them perfect for industries that require long-term reliability and consistent heat management. These bricks ensure your furnace operates efficiently, reducing energy consumption and maintenance costs.
Technical Specifications
| Property | Vaulted Brick | Checker Brick |
|---|---|---|
| SiO₂ Content | ≥ 95% | ≥ 95% |
| Fe2O3 Content | ≤ 1.0% | ≤ 1.0% |
| Refractoriness | ≥ 1710°C | ≥ 1710°C |
| Refractoriness Under Load (RUL) | ≥ 1650°C | ≥ 1650°C |
| Apparent Porosity | ≤ 22% | ≤ 22% |
| Cold Crushing Strength | ≥ 35 MPa | ≥ 30 MPa |
| Bulk Density | ≥ 2.35 g/cm³ | ≥ 2.35 g/cm³ |
| Creep Rate | ≤ 0.8% (at 1550°C for 50h) | ≤ 0.8% (at 1550°C for 50h) |
| Thermal Expansion (at 1000°C) | ≤ 1.26% | ≤ 1.26% |
Key Features
- High Refractoriness: Silica bricks withstand temperatures up to 1710ºC, making them ideal for high-temperature applications.
- Low Creep: These bricks have low creep rates under high loads, maintaining their shape and structural integrity.
- Good Thermal Shock Resistance: Withstanding rapid temperature changes without cracking or degradation, ensuring long-term reliability.
- Superior Thermal Conductivity: Ideal for storing and releasing heat quickly, improving energy efficiency in hot blast stoves.
- Low Expansion: Their low thermal expansion ensures dimensional stability, even under extreme thermal cycling.
- Chemical Resistance: More resistant to chemical erosion than clay and general high-alumina bricks, ensuring a longer service life.
Typical Applications
Silica Bricks for Hot Blast Furnace are widely used in:
- Hot Blast Stoves: For checker chambers, vaults, and furnace walls.
- Blast Furnace Linings: High-temperature parts of blast furnaces that require structural strength and thermal stability.
- Coke Ovens: Ideal for parts of coke ovens that are exposed to extreme temperatures.
- Industrial Kilns: Suitable for any kiln or furnace requiring excellent heat retention and thermal conductivity.
These bricks are essential for improving the longevity and efficiency of high-temperature industrial furnaces.
Production Details
Xintai’s silica bricks are produced using the highest-quality raw materials, such as high-purity quartzite, and undergo precise shaping and firing processes to ensure top-tier performance. Each batch is carefully tested for strength, thermal shock resistance, and dimensional stability to ensure consistency and reliability.
Packing and Shipping Details
Silica bricks are securely packed in fumigation-free wooden pallets, with shrink wrapping and cushioning to protect them during transit. We offer custom packaging solutions for bulk orders and export. Delivery is made by container or bulk cargo according to customer specifications.
Frequently Asked Questions (FAQ)
Q1: What are silica bricks used for in hot blast furnaces?
Silica bricks are primarily used in high-temperature parts of hot blast furnaces, such as checker chambers, vaults, and furnace walls. They are essential for maintaining the structural integrity of the furnace and improving energy efficiency.
Q2: How do silica bricks benefit hot blast stoves?
Silica bricks offer high thermal conductivity, low creep, and excellent thermal shock resistance, ensuring long-term performance under extreme temperature fluctuations in hot blast stoves. They improve heat retention and energy efficiency.
Q3.What is the maximum temperature that silica bricks can withstand?
Silica bricks for hot blast furnaces can withstand temperatures up to 1710ºC, making them suitable for high-temperature industrial applications like hot blast stoves and blast furnaces.
Q4: Are silica bricks resistant to thermal shock?
Yes, silica bricks have good thermal shock resistance, allowing them to handle rapid temperature changes without cracking or degrading, making them ideal for environments like hot blast stoves that experience fluctuating temperatures.
Q5: Can silica bricks be customized for specific furnace designs?
Yes, Xintai Refractory offers customizable sizes and shapes of silica bricks to meet specific requirements. We work closely with customers to ensure that the bricks fit their furnace design and operational needs.
