The development of the coke industry has spurred a growing demand for the upgrade of refractory materials. As coke production scales up and technological requirements become more stringent, traditional refractory materials are struggling to keep pace with the modern industry's needs. This has led to an urgent need for high - performance refractory materials that can withstand the harsh conditions of modern coking processes.
High - density, low - porosity silica bricks have emerged as a solution to these challenges. These bricks possess three core properties that set them apart from ordinary silica bricks: high density, high thermal conductivity, and high compressive strength at high temperatures.
High - density silica bricks have a density greater than 2.38 g/cm³. This high density is not just a random specification but has significant practical implications. When the density of the silica brick is increased, it directly improves the quality of the coke oven. A denser brick can better resist the mechanical stress and chemical corrosion inside the coke oven, thus extending the service life of the coke oven. For example, in some large - scale coke plants, using high - density silica bricks can increase the coke oven's service life by up to 20% compared to using ordinary silica bricks. Moreover, the high - density bricks can also shorten the coking cycle. With better structural integrity, heat can be transferred more evenly inside the oven, reducing the time required for each coking cycle. Some data shows that the coking cycle can be shortened by about 10 - 15%.
High - density low - porosity silica bricks have excellent thermal conductivity. This property is crucial for improving the efficiency of the coke oven. The high thermal conductivity allows heat to be transferred quickly from the heating source to the coal, accelerating the coking process. In contrast, ordinary silica bricks with lower thermal conductivity often result in uneven heating, which not only prolongs the coking time but also affects the quality of the coke produced.
Inside the coke oven, the temperature can reach extremely high levels, and the bricks need to withstand high pressure. High - density low - porosity silica bricks have high compressive strength at high temperatures, which means they can maintain their structural integrity under high - temperature and high - pressure conditions. This is essential for ensuring the long - term stable operation of the coke oven.
The porosity of high - density low - porosity silica bricks is another critical factor. The standard requires the finished product's porosity to be less than 16%. A lower porosity means fewer channels for gas and liquid penetration. This reduces the risk of chemical corrosion from the gases and liquids generated during the coking process, further protecting the structure of the coke oven. In comparison, ordinary silica bricks with higher porosity are more vulnerable to corrosion, which can lead to premature damage to the coke oven.
It's important to note that the technical significance of the porosity and density indicators of high - density low - porosity silica bricks differs from the industry standards of ordinary silica bricks. The strict requirements for these two indicators in high - density low - porosity silica bricks are based on scientific research and practical experience, aiming to meet the high - performance needs of modern coking industries.
For customers, when evaluating whether their coke ovens are suitable for high - density low - porosity silica bricks, they need to consider several factors. First, they should assess the current performance of their coke ovens, including the service life, coking efficiency, and the quality of the coke produced. Second, they should analyze the specific working conditions of their coke ovens, such as the temperature range, pressure, and the chemical environment. Based on these evaluations, customers can make a more rational decision.
If you're looking to upgrade your coke oven and improve its durability and efficiency, choosing the right high - density low - porosity silica bricks is crucial. Let your coke oven be more durable and more efficient. Click here to learn more about our high - performance high - density low - porosity silica bricks and make a wise choice for your coke production!
