Product Overview
Our BG-96B Silica Brick is a high-performance silica refractory specifically engineered for the superstructure of glass melting furnaces, offering an optimized balance of purity and cost-effectiveness. Like its BG-96A counterpart, the “96” designation indicates a minimum silica (SiO₂) content of 96% , while the “B” grade represents a formulation with slightly modified impurity limits for applications where ultra-high purity is not the primary requirement .
Manufactured from selected high-purity quartzite with controlled mineralizer additions, BG-96B silica bricks feature a stable microstructure dominated by tridymite and cristobalite crystals. With carefully managed Fe₂O₃ content and熔融指数, these bricks provide excellent high-temperature performance, good resistance to alkaline vapor attack, and reliable volume stability—making them a trusted choice for glass furnace crowns, regenerators, and superstructure applications .
Key Features & Benefits
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High-Temperature Strength: BG-96B silica bricks maintain robust mechanical strength at elevated temperatures, with a refractoriness under load (T0.6) of ≥1670-1680°C , ensuring structural integrity of furnace superstructures under demanding operating conditions .
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Controlled Impurity Levels: With Fe₂O₃ content strictly limited to ≤0.7-0.8% and Melt Flow Index (Al₂O₃+2R₂O) controlled at ≤0.7% , BG-96B bricks minimize the formation of low-melting phases while offering a practical specification for a wide range of glass furnace applications .
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Stable Volume Performance: The optimized phase composition ensures minimal permanent linear change (0-0.2% at 1450°C×2h) during operation, contributing to long-term furnace seal integrity and dimensional stability .
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Good Alkali Resistance: The dense microstructure provides effective resistance to alkaline vapor attack from the glass batch, supporting extended service life in the chemically aggressive furnace atmosphere .
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Consistent Dimensional Accuracy: Precision forming and controlled firing ensure uniform dimensions, facilitating efficient installation and tight joint construction .
Applications
BG-96B silica bricks are ideally suited for a wide range of glass furnace superstructure applications where reliable performance at elevated temperatures is required:
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Furnace Crowns (Main Roof): Providing stable, load-bearing support at temperatures approaching 1600°C .
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Breast Walls and Sidewalls: Upper structure walls above the glass line exposed to flame radiation and alkaline vapors .
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Regenerator Crowns and Walls: The upper structures of regenerator chambers where exhaust gases pass through checkerwork .
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Port Arches and Port Necks: Flame port structures directing combustion gases into the melting chamber .
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Suspended Walls and Doghouse Crowns: Areas subject to thermal shock and mechanical abrasion from batch materials .
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Inlet Sealing Areas: Critical sealing zones requiring dimensional stability at high temperatures .
Why Choose Our BG-96B Silica Brick?
Our BG-96B silica bricks are manufactured using carefully selected raw materials and controlled firing cycles that ensure consistent quality and reliable performance. Each production batch undergoes rigorous testing to verify:
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Chemical composition by XRF analysis to ensure SiO₂ ≥96% and Fe₂O₃ within specification
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Physical properties including apparent porosity, true density, and cold crushing strength
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Phase composition to confirm residual quartz content ≤3%
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Dimensional accuracy to customer drawings and specifications
Quality Assurance:
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ISO-compliant manufacturing processes
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Comprehensive testing for every production batch
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Traceability from raw materials to finished products
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Packaging designed for safe international transport
With extensive experience in silica refractory technology, our technical team provides comprehensive support, from brick selection and furnace design consultation to installation supervision.
For Inquiries:
Contact our glass industry specialists for application engineering support, custom sizing, or to discuss which silica brick grade is optimal for your specific furnace design. We provide detailed shop drawings, installation recommendations, and certification documents with every order.
