The coke oven industry has witnessed significant growth over the years, driven by the increasing demand for steel production. As the industry evolves, the requirements for coke oven refractories have become more stringent. Traditional refractories are facing challenges in meeting the high - temperature, high - pressure, and long - term operation conditions of modern coke ovens. This has led to a growing need for high - performance refractories, such as high - density, low - porosity silica bricks.
High - density silica bricks have a compact structure, which provides excellent resistance to mechanical stress and thermal shock. A study shows that compared with ordinary silica bricks, high - density silica bricks with a density greater than 2.38g/cm³ can withstand up to 30% more pressure at high temperatures. This high - density characteristic ensures the stability of the coke oven structure during long - term operation.
Good thermal conductivity is crucial for coke ovens. High - density, low - porosity silica bricks have superior thermal conductivity, which can effectively transfer heat within the coke oven. This helps to maintain a uniform temperature distribution, reducing the temperature difference between different parts of the oven. As a result, the coking cycle can be shortened by approximately 15%, improving the overall production efficiency.
Under high - temperature conditions, coke oven refractories are subject to significant pressure. High - density, low - porosity silica bricks can maintain high compressive strength at temperatures up to 1500°C. In a real - world case, a coke oven using these silica bricks reduced the frequency of structural repairs by 40% compared to those using traditional bricks, thanks to their excellent high - temperature compressive strength.
The porosity of silica bricks is a key factor affecting their performance. High - density, low - porosity silica bricks with a finished product porosity of less than 16% have better resistance to chemical corrosion and gas penetration. This low porosity prevents the penetration of harmful substances into the bricks, protecting the internal structure of the coke oven and extending its service life. For example, in a corrosive gas environment, the service life of low - porosity silica bricks can be extended by up to 20% compared to high - porosity bricks.
| Performance Indicator | High - Density, Low - Porosity Silica Bricks | Ordinary Silica Bricks |
|---|---|---|
| Density (g/cm³) | >2.38 | 2.2 - 2.3 |
| Porosity (%) | <16 | 18 - 22 |
| Compressive Strength at 1500°C (MPa) | >50 | 30 - 40 |
| Thermal Conductivity (W/m·K) | 1.5 - 2.0 | 1.0 - 1.3 |
When selecting high - density, low - porosity silica bricks for coke ovens, customers should consider factors such as the specific operating conditions of the coke oven, the required service life, and the budget. For large - scale coke ovens with high - temperature and high - pressure requirements, it is recommended to choose silica bricks with higher density and lower porosity. At the same time, customers should also pay attention to the quality certification and production process of the products to ensure the reliability of the refractories.
High - density, low - porosity silica bricks offer significant advantages in improving the operating efficiency and extending the service life of coke ovens. With their excellent performance in density, thermal conductivity, compressive strength, and low porosity, these bricks are the ideal choice for modern coke oven applications. Are you ready to upgrade your coke oven with high - quality silica bricks? Click here to learn more about our high - density, low - porosity silica bricks and make a smart purchase decision!
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