50 m² AZS Bricks for Oxygen-Fired Kilns

This product is a complete electrically fused cast AZS refractory brick solution specifically designed for 50-square-meter-class fully oxygen-fired glass melting furnaces. Addressing the unique operating conditions of fully oxygen-fired kilns—including high water vapor concentrations, high levels of alkaline volatile components, and accelerated erosion of the upper structure—this solution offers a full range of custom brick profiles for critical areas such as the melting pool walls, pool bottom, upper structure, and flow channels. The material grades are more scientifically matched, resulting in a longer overall service life.

Key Features:

Complete Kiln System Compatibility: Based on the melting pool area and flame space characteristics of 50-square-meter-class full-oxygen combustion kilns, we have pre-designed a complete set of AZS brick configurations covering all critical areas—including the melting pool walls, pool bottom lining, breast wall, front wall, flow channels, and charging ports—with uniform material specifications and tight brick joints.

Long-Term Protection for Upper Structures: The upper structures of fully oxygen-fired kilns are subjected to intense erosion from high-concentration alkaline vapors and water vapor. We provide high-density, ultra-low-porosity specialized hanging bricks and chest wall bricks that effectively resist surface powdering and structural spalling, extending the service life of the upper structures.

Extremely High Purity Ensures Glass Quality: Fully oxygen-fired kilns are commonly used to produce high-value-added ultra-clear glass, solar glass, and other products. The oxidation process controls glass phase leaching to an extremely low level, eliminating stone formation and bubbles at the source and ensuring the glass melt achieves optical-grade purity.

Resistance to Severe Corrosion and Thermal Shock: The melting tank walls are constructed using AZS bricks with a ZrO₂ content of 36% or higher, effectively resisting convective erosion from the glass melt caused by the intensified melting process of all-oxygen combustion. At the same time, the low thermal expansion coefficient ensures the furnace’s thermal shock resistance during cold repair and heating-up phases.

Precision Machining and Rapid Installation: All bricks undergo CNC precision grinding, ensuring dimensional accuracy and excellent interchangeability. This guarantees joint widths of less than 1.5 mm, effectively reducing glass melt penetration and upward drilling erosion, while shortening the construction cycle for new furnaces and cold repair work.

Suitable Kiln Types:

Various fully oxygen-fired glass melting furnaces of approximately 50 square meters, suitable for high-end specialty glass production lines such as ultra-clear rolled photovoltaic glass, ultra-clear float glass, high-borosilicate heat-resistant glass, and pharmaceutical glass tubes.