PRODUCT DESCRIPTION

High Quality Silica Brick For Glass Furnace

Description

Our high quality silica bricks are high-end siliceous refractory products custom-engineered for demanding supperstructures and crowns of glass melting furnaces. Using high-purity crystalline quartzite as the core raw material, these bricks undergo meticulous batching, high-pressure molding, and precision firing at temperatures ranging from 1380°C to 1450°C. As the industry-standard refractory for critical load-bearing zones, they are perfectly optimized to withstand the intense operational conditions of large-scale, high-temperature modern glass furnaces.

Advantages

l Exceptional Refractoriness Under Load: Features a Refractoriness Under Load (RUL) of more than 1680°C paired with an ultra-low creep rate at 1600°C. This ensures the furnace structure remains completely deformation-free under long-term, continuous, high-temperature campaigns.

l  Zero Melt Contamination: Made with over 96% SiO₂, this brick shares the exact same core material as glass. Even if tiny pieces chip or drip under intense heat, they melt harmlessly into the mixture without introducing impurities. This completely protects the glass from defects like stones, streaks, or lines.

l  Superior Acidic Slag & Gas Resistance: Strongly resists the chemical erosion caused by volatile acidic gases and batch dust carried in the furnace atmosphere.

l  Structural Optimization & Cost-Efficiency: Its low bulk density significantly reduces the overall structural dead-weight of the furnace, optimizing the design load for wide-span crowns. Additionally, it offers an exceptional performance-to-cost ratio compared to other high-end alternatives.

l  Low Linear Expansion: Composed primarily of tridymite and cristobalite mineral phases, with residual quartz strictly controlled below 3.0%. This precise balance ensures low linear expansion, drastically reducing the risk of structural cracking during the critical furnace heat-up phase.

Application

l Superstructures: Widely deployed in the upper high-temperature structures of melting zones, including the furnace crown, cooling zone arch, breast walls, and gable walls. It is the premier crown refractory choice for soda-lime, photovoltaic (solar), and container glass furnaces.

l  Regenerator System Components: Ideally suited for regenerator crown and target walls, comfortably enduring prolonged operational temperatures between 1300°C and 1550°C to secure heat recovery efficiency.

l  Specialty Glass Compatibility: Universally compatible as a non-contact, high-temperature lining material for borosilicate glass and other specialized glass variants, catering to diverse production needs.

   TECHNIQUE DATA