Kilns Alumina-Chrome-Zr brick including Fe2O3 chemical composition engineered for performance in thermal refractory systems

Product Description:

High Alumina Refractory Bricks are advanced refractory materials designed to withstand extreme high-temperature environments, making them ideal for use in high temperature industrial furnaces, kilns, and other demanding applications. These bricks exhibit exceptional durability and thermal stability due to their carefully controlled chemical composition and physical properties.

One of the key attributes of High Alumina Refractory Bricks is their impressive bulk density, ranging from 3.3 to 3.8 g/cm³. This high bulk density contributes to the bricks’ excellent mechanical strength and resistance to thermal shock, ensuring prolonged service life even under harsh operating conditions. The cold crushing strength of these bricks is notably high, with values equal to or exceeding 120 MPa, which guarantees outstanding load-bearing capacity and structural integrity during furnace operation.

The chemical composition of High Alumina Refractory Bricks is predominantly alumina (Al2O3), with content varying between 75% and 85%. This high alumina content is crucial for enhancing the bricks’ resistance to slag corrosion, chemical attack, and high-temperature deformation. Alongside alumina, the bricks contain other essential oxides such as silica (SiO2), iron oxide (Fe2O3), calcium oxide (CaO), and magnesium oxide (MgO). These components collectively optimize the bricks’ performance characteristics, including thermal conductivity, refractoriness, and mechanical strength.

High Alumina Refractory Bricks are often compared with Alumina-Chrome-Zr bricks, which are also widely used in similar high-temperature applications. While Alumina-Chrome-Zr bricks incorporate chromium oxide and zirconia to enhance specific properties such as slag resistance and thermal stability, High Alumina Refractory Bricks offer a cost-effective and reliable alternative with excellent overall performance. The presence of alumina as the primary constituent ensures that these bricks can maintain structural integrity and resist chemical degradation in environments where Alumina-Chrome-Zr bricks are typically employed.

In industrial settings, these High Alumina Refractory Bricks are utilized extensively in the construction and maintenance of high temperature industrial furnaces, kilns, and other thermal processing units. Their robust physical properties make them particularly suitable for applications involving rapid temperature changes and exposure to corrosive atmospheres. The bricks’ ability to endure aggressive thermal cycling and mechanical stresses helps reduce downtime and maintenance costs, contributing to improved operational efficiency.

Moreover, High Alumina Refractory Bricks are valued for their versatility and adaptability. They can be manufactured in various sizes and shapes to meet specific design requirements, facilitating easy installation and customization within existing furnace or kiln structures. Their chemical stability and high melting point make them indispensable in industries such as metallurgy, ceramics, glass manufacturing, and cement production.

In summary, High Alumina Refractory Bricks are a high-performance solution for demanding high-temperature applications. With a bulk density of 3.3-3.8 g/cm³, cold crushing strength of at least 120 MPa, and alumina content ranging from 75% to 85%, these bricks deliver exceptional durability, thermal resistance, and chemical stability. Their balanced chemical composition, including Al2O3, SiO2, Fe2O3, CaO, and MgO, ensures reliable performance in harsh industrial environments. While Alumina-Chrome-Zr bricks remain a popular choice, High Alumina Refractory Bricks offer a competitive alternative, combining cost-effectiveness with excellent physical and chemical properties to meet the rigorous demands of modern high temperature industrial furnaces and kilns.

Features:

• Product Name: High Alumina Refractory Bricks
• Application Temperature: ≥1500℃
• Type: SK-36
• Al2O3 Content: 75-85%
• Feature: High Refractoriness
• Feature: Good Thermal Shock Resistance
• Feature: Low Thermal Conductivity
• Contains Alumina-Chrome-Zr brick for enhanced durability and performance
• Alumina-Chrome-Zr brick composition ensures excellent resistance to high temperature and corrosion
• Alumina-Chrome-Zr brick structure provides superior mechanical strength and thermal stability

Technical Parameters:

Applications:

The High Alumina Refractory Bricks by Annec, originating from China, are engineered to meet the rigorous demands of high-temperature industrial applications. With an impressive cold crushing strength of ≥120MPa and an application temperature threshold of ≥1500℃, these bricks are ideal for environments that require exceptional durability and thermal resistance. The Al2O3 content ranging from 75-85% ensures superior performance in maintaining structural integrity under intense heat.

One of the primary application occasions for Annec’s High Alumina Refractory Bricks is in high temperature industrial furnaces. These furnaces, used in metal smelting, ceramics production, and glass manufacturing, require materials that can withstand prolonged exposure to extreme temperatures without degrading. The bricks’ robust composition makes them suitable for lining furnace walls, roofs, and floors, providing excellent thermal insulation and resistance to chemical corrosion.

In addition to furnaces, these bricks are extensively used in kilns, where consistent high temperature resistance is crucial for processes such as firing ceramics, calcining limestone, and heat treatment of various materials. The customized size option allows for precise fitting in different kiln designs, enhancing efficiency and reducing heat loss. The bricks’ high alumina content also makes them compatible with Alumina-Chrome-Zr brick linings, often used in conjunction to improve overall refractoriness and mechanical strength.

Another important scenario for the application of Annec’s High Alumina Refractory Bricks is in environments where Alumina-Chrome-Zr brick is traditionally used. These bricks complement each other well, combining the benefits of high alumina content with the added wear resistance and thermal shock stability offered by the Alumina-Chrome-Zr bricks. This makes them suitable for use in power plants, cement kilns, and petrochemical reactors where extreme conditions prevail.

The versatility of Annec’s product is further highlighted by its adaptability to custom sizes, allowing for tailored installations that maximize performance and lifespan. Whether used alone or paired with Alumina-Chrome-Zr brick, these High Alumina Refractory Bricks provide a reliable solution for industries requiring materials capable of withstanding harsh thermal and mechanical stresses.