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Vitcas Grade 26 Insulating Firebricks are expertly engineered through a controlled porosity process, delivering exceptional thermal, high temperature insulation with lightweight properties. The low thermal conductivity of Grade 26 insulating firebricks ensures faster heating and cooling cycles, making them ideal for furnace and energy-efficient kiln operations. For optimal installation, use Vitset 45 refractory mortar, specifically designed for high-temperature bonding. Size: 230x114x76mm Density: 800kg/m³
Key Features:
Efficient Thermal Insulation: Refractory insulation and low thermal mass reduce energy consumption.
Maximum Temperature: 1430°C (2600°F)
Lightweight and Durable: Designed to handle repeated thermal cycling.
Applications for Primary Lining:
Ceramic Kilns: Ideal for pottery, tiles, and brick manufacturing.
Forges: Suitable for metalworking and blacksmithing operations.
Heat Treatment Furnaces: Efficient heat containment for annealing, tempering, and other thermal treatments.
Applications for Secondary Insulation Layer (behind refractory linings):
Furnaces and Kilns: Enhanced heat retention for industrial processing.
Treatment Vessels & Regenerators: Improves operational efficiency in chemical processing.
Gas Producers & Soaking Pits: Thermal insulation in steel and glass manufacturing.
Stress Relieving Furnaces: Reliable thermal management for post-weld heat treatment.
Reactor Chambers: Protects external structures from high internal temperatures.
What temperature can Grade 26 insulation bricks withstand?
Answer
VITCAS Grade 26 Insulation Fire Bricks have a maximum service temperature of 1430°C. They are suitable for high-temperature insulation where Grade 23 bricks would not provide a sufficient temperature rating. The complete lining, including the refractory mortar and surrounding materials, must also be suitable for the intended operating conditions.
Question
Are Grade 26 insulation fire bricks easy to cut?
Answer
Yes. Grade 26 insulation fire bricks are lightweight and very easy to cut with a saw, making them convenient for shaped kiln, furnace and forge linings. Measure and mark each brick carefully before cutting. Their insulating structure has lower mechanical strength and abrasion resistance than dense fireclay bricks, so handle cut sections carefully.
Question
Which refractory mortar should be used with Grade 26 bricks?
Answer
VITCAS Vitset 45 Refractory Mortar is recommended for setting and jointing Grade 26 insulation fire bricks. It provides high-temperature bonding for this grade of lightweight refractory brick. Prepare and apply the mortar according to its instructions, ensuring the brick surfaces are clean and suitable for bonding.
Question
Will Grade 26 bricks shorten kiln heating and cooling cycles?
Answer
Their low thermal conductivity and low thermal mass help kilns and furnaces heat up and cool down faster than linings made from dense heat-storage bricks. This makes Grade 26 insulation bricks useful where quicker operating cycles and reduced energy consumption are required. Actual performance will depend on the complete lining design and equipment.
Question
Can Grade 26 bricks withstand repeated thermal cycling?
Answer
Yes. Grade 26 insulation bricks are designed to cope with repeated heating and cooling cycles. Their lightweight, controlled pore structure makes them suitable for kilns, furnaces and other equipment operated in cycles. The temperature must remain within the brick’s maximum service limit of 1430°C.
Question
Can Grade 26 bricks provide back-up furnace insulation?
Answer
Yes. They can be installed as a secondary insulation layer behind a suitable refractory lining in furnaces, kilns, treatment vessels, regenerators, gas producers, soaking pits, stress-relieving furnaces and reactor chambers. This helps reduce heat loss and protect the external structure from high internal temperatures.
Question
Can Grade 26 bricks form a primary hot-face lining?
Answer
Yes. Grade 26 insulation fire bricks can be used as primary linings in suitable ceramic kilns, forges and heat-treatment furnaces. They provide high-temperature insulation while limiting unnecessary heat storage. Confirm that the working temperature, mechanical conditions and complete lining design are appropriate for lightweight insulation bricks.
