Product Overview
Our BG-95 Silica Brick is a reliable, cost-effective silica refractory solution specifically designed for glass furnace applications where standard performance requirements are sufficient. The “95” designation indicates a minimum silica (SiO₂) content of 95% , positioning this grade as the versatile workhorse of silica refractories for a wide range of high-temperature industrial applications .
Manufactured from selected quartzite with controlled impurity levels, BG-95 silica bricks feature a stable microstructure primarily composed of tridymite and cristobalite crystals. With optimized Fe₂O₃ content and carefully managed fluxing components, these bricks provide dependable high-temperature performance, good volume stability, and effective resistance to acidic slag attack—making them a trusted choice for glass furnace superstructures, coke ovens, and various industrial kilns .
Key Features & Benefits
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Reliable High-Temperature Performance: BG-95 silica bricks maintain good mechanical strength at elevated temperatures, with a refractoriness under load (T0.6) of ≥1650°C , ensuring structural integrity in demanding thermal environments .
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Optimized Purity for General Applications: With SiO₂ content ≥95% and Fe₂O₃ controlled at ≤1.2-1.5% , BG-95 bricks offer a practical balance of purity and cost-effectiveness suitable for a wide range of furnace zones .
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Stable Volume Performance: The controlled phase composition ensures minimal permanent linear change (0 to +0.3% at 1500°C×2h) during operation, contributing to long-term furnace dimensional stability .
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Good Acidic Slag Resistance: As an acidic refractory, BG-95 provides effective resistance to acidic slag attack, making it suitable for environments where basic slags are not present .
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Broad Application Versatility: Beyond glass furnaces, BG-95 silica bricks are widely used in coke ovens, hot blast stoves, and various industrial kilns, offering excellent value across multiple industries .
Applications
BG-95 silica bricks are ideally suited for a wide range of high-temperature industrial applications:
Glass Furnace Applications:
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Glass Furnace Superstructures: Upper walls, breast walls, and regenerator crowns where temperatures are high but not extreme .
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Port Arches and Port Necks: Flame port structures directing combustion gases into the melting chamber .
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Doghouse Crowns: Batch inlet areas subject to thermal shock and mechanical abrasion .
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Suspended Walls and Inlet Sealing Areas: General superstructure applications requiring reliable performance .
Other Industrial Applications:
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Coke Ovens: Carbonization chamber and combustion chamber partition walls .
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Hot Blast Stoves: High-temperature load-bearing zones, domes, and checker bricks .
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Steel Industry: Regenerator chambers and sediment chambers of open hearth furnaces, soaking pits .
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Ceramic Industry: Kiln furniture and kiln crowns for ceramic firing .
Why Choose Our BG-95 Silica Brick?
Our BG-95 silica bricks are manufactured using consistent raw material sources and controlled firing cycles that ensure reliable quality and dependable performance. Each production batch undergoes rigorous testing to verify:
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Chemical composition by XRF analysis to ensure SiO₂ ≥95% and Fe₂O₃ within specification .
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Physical properties including apparent porosity, true density, and cold crushing strength .
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Thermal performance including refractoriness under load and permanent linear change .
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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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Secure packaging designed for safe international transport (wooden pallets with steel straps)
With decades of experience in silica refractory technology, our technical team provides comprehensive support, from product selection and furnace design consultation to installation supervision. Our products have been successfully exported to more than 50 countries and regions worldwide .
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 and operating conditions. We provide detailed shop drawings, installation recommendations, and certification documents with every order.
