Silica Insulating Firebrick, primarily composed of SiO₂ with a content of ≥93.6%, is a lightweight refractory material renowned for its “high insulation and low heat storage” properties. It serves as a core component for the insulation layer in high-temperature equipment such as glass kilns and steel blast furnaces. Firebird’s advanced silica insulating firebricks are crafted from premium high-purity materials, meticulously pressed to ensure optimal particle size distribution, and fired at elevated temperatures in state-of-the-art tunnel kilns.
Unlike traditional refractory bricks containing wood chips or polystyrene, modern silica bricks utilize precise temperature control technology in tunnel kilns, enhancing their high-temperature resistance to 1600°C while achieving near-zero carbon emissions during production. This innovation not only reduces the overall weight of the furnace by 20% but also cuts annual energy consumption costs by 5-12%, making it a crucial material for the green transformation of industrial kilns.
We offer three grades for customers:
INS06 with a density of 0.6g/cm³
INS08 with a density of 0.8g/cm³
INS10 with a density of 1.0g/cm³
Firebird’s silica insulating firebricks boast exceptionally high SiO₂ content, enabling higher classification and operational temperatures. These bricks outperform traditional alternatives by increasing classification temperatures by 100°C to 150°C, delivering unmatched insulation efficiency in extreme heat conditions.
2. Precision Tunnel Kiln Sintering for Enhanced Durability Manufactured from premium high-purity raw materials and pressed with an ideal particle size distribution, these bricks are sintered in advanced tunnel kilns. The prolonged high-temperature holding phase minimizes flaws like excessive residual quartz, cracking, and poor thermal shock resistance, issues often found in products from conventional pusher kilns.
Firebird provides silica insulating firebricks in bulk densities of 1.0g/cm³, 0.8g/cm³, and 0.6g/cm³, enabling tailored insulation solutions for composite applications. These varied densities not only optimize kiln insulation but also reduce the structural load of kiln roofs, enhancing stability. For instance, the Firebird INS10 brick with a 1.0g/cm³ density replaces traditional 1.2g/cm³ products, offering a 20% weight reduction for hot blast stove domes and superior insulation performance.
Crafted from premium-grade raw materials and engineered with optimized particle size distribution, Firebird’s silica insulating firebricks achieve reduced density and a refined, uniform pore structure. This design significantly lowers thermal conductivity, delivering superior insulation in high-temperature applications. Unlike traditional products, which often suffer from density and strength inconsistencies, Firebird’s bricks ensure reliable and stable insulation performance.
Featuring a uniformly structured pore network, these bricks retain their structural integrity even under extreme heat, preventing the formation of eutectic melts. This results in robust refractory structures, consistent high-temperature performance, reduced maintenance requirements, and a significantly prolonged operational lifespan.
Firebird’s silica insulating firebricks are produced using a 100% dry-pressing process from natural mineral raw materials, eliminating the need for polystyrene balls or sawdust. This eco-friendly approach minimizes NOx and CO2 emissions, ensuring compliance with environmental regulations and supporting sustainable development initiatives.
Silica insulating firebricks are high-performance thermal insulation refractory materials widely used in glass furnace melting zones, steel industry hot blast furnace domes, and chemical high-temperature reactors. Firebird’s offers three density grades (0.6/0.8/1.0 g/cm³) to meet lightweight retrofitting and high-temperature structural demands. For instance, the INS10 grade maintains volume stability at 1600°C, delivering 15-20% energy savings.
Crafted from 100% mineral raw materials, these bricks eliminate NOx emissions from traditional production methods, supporting green transformation in glassmaking, metallurgy, and petrochemical industries. Firebird’s solution combines lightweight design, superior insulation, and environmental compliance — ideal for energy-efficient and eco-conscious industrial upgrades.
