The content of alumina in fire clay bricks for sale ranges from 30% to 48%. Alumina (Al2O3) is a key component that provides the bricks with their refractory properties. Fire clay bricks of Kerui Refractory can withstand high temperatures. So they are suitable for various industries.
Fire clay brick is a type of refractory brick for sale primarily including clay and other additives. Fire clay refractory is a type of clay with a high content of alumina and silica. Other additives such as grog (pre-fired clay) and fluxes may also be included to enhance certain properties.
The specific alumina content in fire clay bricks determines their refractoriness and suitability for different temperature ranges. Higher alumina content typically corresponds to higher refractoriness and better performance at high temperatures. Therefore, the alumina content is an important factor to consider when selecting fire clay bricks for specific applications.
| Item/Grade | PN-42 | PN-40 | PN-35 | PN-30 | PN-25 | ||
|---|---|---|---|---|---|---|---|
| ω (Al2O3)/% | μ0 ≥ | 42 | 40 | 35 | 30 | 25 | |
| σ | 2.5 | ||||||
| ω (Fe2O3)/% | μ0 ≤ | 2.0 | / | / | / | / | |
| σ | 0.4 | ||||||
| Apparent Porosity/% | μ0 ≤ | 20 (22) | 24 (26) | 26 (28) | 23 (25) | 21 (23) | |
| σ | 2.0 | ||||||
| Cold Crushing Strength/MPa | μ0 ≥ | 45 (35) | 35 (30) | 30 (25) | 30 (25) | 30 (25) | |
| Xmin | 35 (25) | 25 (20) | 20 (15) | 20 (15) | 20 (15) | ||
| σ | 10 | ||||||
| 0.2MPa Refractoriness Underload T0.6/℃ | μ0 ≥ | 1400 | 1350 | 1320 | 1300 | 1250 | |
| σ | 13 | ||||||
| Permanent Linear Change/% | U-L | 1400℃*2h -0.4-0.1 | 1350℃*2h -0.4-0.1 | 1300℃*2h -0.4-0.1 | 1300℃*2h -0.4-0.1 | 1250℃*2h -0.4-0.1 | |
Fire clay bricks possess excellent thermal shock resistance, which makes them withstand rapid changes in temperature without cracking or spalling.
Fire clay bricks have relatively low thermal conductivity, which helps to minimize heat loss or gain, making fire clay bricks ideal for applications requiring thermal insulation.
As the one of fire bricks for sale, refractory clay bricks possess good abrasion resistance, which allows them to withstand mechanical wear and friction. Besides, it is important for fire clay brick to obtain its shape
The refractoriness range of fire clay bricks for sale falls within the temperature range of 1580°C to 1770°C (2876°F to 3218 °F). The specific refractoriness range may vary depending on the composition and manufacturing process of the fire clay bricks.
Fire clay bricks for sale show high resistance to acidic and slag environments. They can withstand the corrosive effects of acids, alkalis, and other chemicals, making them suitable for use in industries such as metallurgy, chemical processing, and incinerators.
Fire clay block has low thermal conductivity, which results in excellent thermal insulation properties. Moreover, They have a wide range of applications in high-temp furnaces. They help to maintain stable temperatures and reduce heat loss.
As the one of refractory brick suppliers, The first step of Kerui manufacturing process is the preparation of raw materials. Fire clay refractory is the main raw material, usually obtained from clay mines. What’s more, laboratory testing and screening of raw materials, meet the requirements of refractory raw materials stored in the raw material factory. The factory’s fully automated batching system ensures the performance of clay bricks.
The clay fire bricks for sale are formed automatically by presses, and these kinds of formed clay bricks are highly accurate. In addition, Kerui Refractory will test the formed clay fire bricks twice during forming process to ensure the quality of the clay bricks’ embryos. As a result, the clay bricks produced by Kerui have a smooth surface and precise dimensions that meet the requirements.
After shaping, the clay fire bricks are dried to remove excess moisture. The drying process is crucial to prevent cracking or deformation during firing. Meanwhile, the drying process can take several days or even weeks, depending on the size and thickness of the bricks. The bricks are usually initially dried at relatively low temperatures and then gradually raised to higher temperatures. Because this slow process helps to drain moisture from within the brick without causing excessive stress.
Once the bricks are dried, they are fired in kilns at high temperatures. The fire clay brick firing temperature typically ranges from 900°C to 1200°C (1652°F to 2192°F). However, it’s important to note that the exact burning temperature of clay brick can vary depending on factors such as the specific type of clay used, the properties of the clay fire bricks, and the manufacturing process.
After the firing period, the kiln is gradually cooled down to room temperature to prevent thermal shock and ensure the bricks retain their structural integrity. In addition, inspectors will select fire clay bricks that do not meet the specifications to maintain the quality of the final product. By implementing strict quality control, Kerui clay refractory brick manufacturers can ensure that their products are consistent, and reliable for their intended applications.
Once the quality control process is complete, the refractory clay bricks are ready to be packaged and shipped to the customer. Kerui and reputable shipping companies work together to minimize the risk of damage during shipping. More about Kerui fire clay bricks manufacturer, you can also visit our Youtube.
Fire clay refractory material is highly abundant in raw materials and has extensive applications in various industries. Meanwhile, the versatility of fire clay refractory material makes them indispensable in numerous processes and sectors, where their superior thermal and chemical properties play a vital role in ensuring reliable and efficient operations.
Refractory clay bricks have a wide range of applications compared to other types of refractories:
No! Refractory material suppliers fire clay bricks are generally considered to be affordable and cost-effective compared to other refractory brick prices. While the exact price can vary depending on factors such as quality, quantity, location, and supplier, fire clay bricks for sale are famous for their competitive pricing. Here are some key price advantages of fire clay bricks:
Fire clay bricks show excellent insulation and heat resistance in high-temperature applications. By effectively retaining heat, refractory clay bricks help save energy and reduce fuel consumption, resulting in long-term cost benefits.
Clearly define your specific requirements, such as refractory brick sizes, technical specifications, quantity, delivery timeline, and any other relevant factors.
Research and evaluate potential suppliers’ company profiles, including their experience, reputation, certifications, and customer reviews. Then, look for a reliable supplier.
Contact the supplier and gather more information. Ask about their production capabilities, delivery times, prices, and any additional services they offer.
Request samples or visit the supplier’s factory to assess the quality of their fire clay bricks.
Once you have identified a suitable supplier, make sure that your formal contract clearly documents all agreements.
As a leading manufacturer of refractory material in China, Kerui Refractory is committed to offering exceptional product services to meet customers’ needs. As a potential customer, you can easily request a free quote from us to get a clear understanding of our competitive pricing and high quality clay fire bricks. Whether you require fire clay bricks for your industrial application or any other specific requirement, we are here to help you.