Overview
Perlite insulation brick is a high-performance thermal insulation material made from expanded perlite, a volcanic glass processed at high temperatures. The bricks are lightweight and exhibit excellent thermal insulation properties, making them ideal for high-temperature applications. These bricks are widely used in industries requiring heat retention or resistance, such as metallurgy, petrochemicals, and construction. Their porous structure contributes to low thermal conductivity and high fire resistance.
Physical and Chemical Properties
Perlite insulation bricks are characterized by their low density, typically ranging from 0.2 to 0.5 g/cm³, which makes them easy to handle and install. Their porous structure results in low thermal conductivity, often between 0.04 and 0.08 W/m·K, ensuring effective insulation. The bricks can withstand temperatures up to 1260°C (2300°F) without significant degradation. They are chemically inert, non-combustible, and resistant to most acids and alkalis, making them suitable for harsh industrial environments.
Main Applications
Perlite insulation bricks are extensively used in industrial settings, including lining for furnaces, kilns, and boilers, where they help maintain high temperatures while minimizing heat loss. They are also employed in chimneys and exhaust systems to prevent heat transfer to surrounding structures. In construction, these bricks are used for insulating walls, roofs, and floors, particularly in buildings requiring fireproofing or energy efficiency. Their lightweight nature reduces structural load, making them a preferred choice for retrofitting older buildings.
Safety and Storage
While perlite insulation bricks are non-toxic, handling them can generate dust, which may irritate the respiratory system. Workers should use masks and gloves to minimize exposure. Proper ventilation is recommended during installation or cutting. Storage should be in a dry, covered area to prevent moisture absorption, which can degrade the material's insulating properties. Avoid stacking heavy items on top of the bricks to prevent crushing.
B2B Procurement Guide
When procuring perlite insulation bricks, prioritize suppliers with certifications for quality and safety standards, such as ASTM or ISO. Key specifications to verify include density, thermal conductivity, and maximum service temperature. Bulk purchases may offer cost savings, but ensure proper logistics for handling and storage. Compare prices from multiple suppliers, with reference ranges typically between $50 and $150 per cubic meter, depending on quality and region.
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