High-Temperature Resistance: Withstands up to 1350°C continuous operation.
Energy Efficiency: Low thermal conductivity reduces heat loss.
Lightweight & Durable: Easy to handle and long-lasting.
Wide Application: Steel, glass, ceramic, chemical, and energy industries.
| Property | Standard IFB | High-Temperature IFB | Ultra-Light IFB |
| Max Service Temperature | 1200°C | 1350°C | 1400°C |
| Bulk Density (kg/m³) | 1200–1600 | 1200–1600 | 900–1200 |
| tdermal Conductivity (W/m·K) | 0.6–1.2 | 0.6–1.2 | 0.3–0.6 |
| Cold Crushing Strengtd (MPa) | 15–25 | 15–25 | 5–10 |
| Flexural Strengtd (MPa) | 5–10 | 5–10 | 3–6 |
| Chemical Composition | Al₂O₃, SiO₂ | Al₂O₃, SiO₂ | Al₂O₃, SiO₂ |
| Standard Size (mm) | 230×114×65 | 230×114×65 | 230×114×50 |
| tdickness Range (mm) | 50–100 | 50–100 | 30–80 |
Highland Refractory Insulated Fire Bricks (IFB) are advanced lightweight refractory materials specifically designed for high-temperature insulation in industrial furnaces, kilns, boilers, and other thermal equipment. Manufactured with premium alumina-silica composition and carefully controlled porous structure, these bricks provide superior thermal insulation, mechanical strength, and durability.
They effectively reduce heat loss, improve energy efficiency, and extend the service life of industrial equipment, making them a critical choice for steel, non-ferrous metals, glass, ceramics, energy, and chemical industries worldwide.
Insulated Fire Bricks are rigid, lightweight, and dimensionally stable refractory units. Unlike dense traditional fire bricks, IFBs deliver high insulation performance while maintaining structural integrity, which makes them suitable for furnace linings, back-up insulation, and heat-conserving applications.
Their porous construction allows for reduced heat transfer, improving furnace efficiency without compromising mechanical properties.
Key Advantages:
Continuous service temperature up to 1350°C, with short-term tolerance up to 1400°C
Low thermal conductivity for significant energy savings
High compressive and flexural strength for reliable long-term performance
Lightweight design reduces furnace wall load and facilitates installation
Eco-friendly, non-toxic, and compliant with modern industrial standards
The combination of thermal efficiency, low weight, and excellent mechanical performance positions Highland IFBs as an optimal solution for high-temperature applications requiring both insulation and durability.
Highland IFBs can withstand continuous operation up to 1350°C with minimal thermal shrinkage. Their exceptional thermal stability ensures long-term dimensional integrity, even under rapid temperature cycling.
Short-term peak temperatures up to 1400°C are manageable without compromising structural performance, making them suitable for high-demand zones in furnaces and kilns.
IFBs are engineered to minimize heat transfer, thereby reducing energy consumption by 15–20% compared to traditional dense bricks. This efficiency helps maintain uniform furnace temperatures, optimize process control, and lower operating costs over the equipment lifecycle.
Despite their lightweight design, IFBs offer high compressive and flexural strength, enabling them to withstand vibration, mechanical stress, and occasional impacts during installation and operation. Their stable structure reduces maintenance frequency and operational downtime.
The reduced density of IFBs simplifies handling and installation, which not only lowers labor costs but also accelerates construction schedules. Customizable sizes and thicknesses allow precise fitting in furnace walls, back-up insulation layers, and specialized equipment.
The alumina-silica composition provides resistance against alkali, acid vapors, and industrial gases, ensuring consistent performance in harsh chemical environments. This property makes IFBs highly suitable for chemical reactors, petrochemical furnaces, and high-temperature boilers.
Highland IFBs are non-toxic and environmentally friendly, fully compliant with industrial safety and environmental standards. They pose minimal health risks during handling and installation and do not release harmful emissions during operation.
Highland Refractory offers multiple grades of Insulated Fire Bricks to meet perse industrial needs:
Standard IFB – For general-purpose insulation in medium-temperature furnaces and kilns.
High-Temperature IFB – Suitable for higher temperature zones up to 1350°C, providing superior thermal stability.
Ultra-Light IFB – Optimized for maximum insulation efficiency and minimal weight, ideal for sensitive furnace structures and energy-efficient designs.
Each grade can be customized in thickness, density, and dimensions, allowing precise adaptation to any furnace design or industrial application.
Highland IFBs are widely used across industries where high-temperature insulation is critical:
Furnace partitions, ladle covers, and tundish insulation
Protects furnace structure from molten metal erosion
Reduces energy consumption and improves process stability
Kiln linings, expansion joints, and thermal panels
Ensures uniform temperature distribution
Reduces contamination risks and improves sintering or melting efficiency
Industrial boilers, incinerators, and heat exchangers
Reduces heat loss and enhances energy efficiency
Improves overall operational safety
Reactor linings, cracking furnaces, and high-temperature vessels
Provides resistance against chemical corrosion and thermal stress
Extends service life of critical equipment
Kiln back-up insulation and furnace linings
Enhances fuel efficiency and reduces thermal losses
High-temperature incinerators, combustion chambers, and thermal protection
Ensures reliable operation under harsh conditions
| Feature | Insulated Fire Brick | Dense Fire Brick | Lightweight Brick |
| Weight | Light | Heavy | Light |
| Thermal Conductivity | Low | High | Low |
| Compressive Strength | High | Very High | Moderate |
| Energy Efficiency | Excellent | Low | Good |
| Application | Furnace insulation, back-up lining | Structural walls | Thermal panels, insulation |
Insights: IFBs offer a balanced combination of low weight, high insulation, and mechanical durability, making them ideal for modern energy-efficient furnaces.
Select a grade rated above the peak furnace temperature to ensure long-term performance.
Higher-density IFBs are suitable for load-bearing furnace walls or back-up linings.
Lower conductivity grades maximize energy efficiency and minimize heat loss.
Custom sizes and thicknesses ensure minimal gaps and optimal insulation coverage.
Consider chemical exposure, moisture, and vibration conditions when choosing the appropriate grade.
Highland Refractory provides technical consultation and installation guidance to ensure optimal selection for each application.
Over 30 years of experience in manufacturing refractory products
ISO-certified quality management system
Global export experience to 50+ countries
Customizable products: size, density, and temperature grades
Free samples, technical support, and engineering consultation
High-quality materials, reliable performance, and consistent supply
Customer Success Story: A European steel plant replaced traditional dense bricks with Highland IFBs, reducing furnace energy consumption by 18% while maintaining operational stability for over 2 years.
Installation Tips: Use proper mortar and alignment to minimize gaps; avoid excessive force.
Cutting: Boards can be cut with standard hand tools or saws.
Maintenance: Inspect periodically for cracks or wear; replace damaged units promptly.
Storage: Keep in a dry, ventilated area to prevent moisture absorption.
Q1: What is the maximum operating temperature of IFB?
A: Standard IFBs withstand up to 1350°C; ultra-light grades tolerate short-term 1400°C.
Q2: Can IFBs be cut to fit furnace dimensions?
A: Yes, they can be cut on-site to match any installation requirement.
Q3: How do IFBs compare to dense fire bricks?
A: IFBs are lighter, provide superior insulation, and reduce energy consumption while maintaining adequate mechanical strength.
Q4: What is the typical service life of IFBs?
A: With proper installation and operation, IFBs can last several years, depending on furnace conditions.
Q5: Are IFBs environmentally safe?
A: Yes, they are non-toxic, eco-friendly, and comply with industrial safety standards.
Q6: Can IFBs withstand chemical exposure?
A: Yes, they resist most alkalis, acids, and industrial gases.
Q7: Are custom sizes available?
A: Yes, Highland Refractory can provide boards of various dimensions, densities, and grades.
Q8: How do IFBs improve furnace efficiency?
A: By reducing heat loss and maintaining uniform temperature, IFBs increase thermal efficiency and reduce fuel consumption.
Q9: What industries use IFBs?
A: Steel, non-ferrous metallurgy, glass, ceramics, chemical, energy, cement, and waste-to-energy industries.
Q10: Does Highland Refractory provide technical support?
A: Yes, engineers offer guidance on selection, installation, and maintenance.
Q11: How are IFBs packaged for shipping?
A: Boards are packed on sturdy pallets, shrink-wrapped for protection, and can be shipped globally.
Q12: Can IFBs be used for retrofitting existing furnaces?
A: Yes, their lightweight nature and customizable sizes make them ideal for both new installations and retrofits.
Q13: Are IFBs resistant to thermal shock?
A: Yes, their porous structure absorbs expansion and contraction stresses, minimizing cracking.
Q14: Can IFBs be combined with other insulation materials?
A: Yes, IFBs are often used with blankets or castables for enhanced thermal performance.
Q15: How do I request a sample?
A: Contact Highland Refractory via the website or email to request free samples for evaluation.
Silicon carbide plates are mainly composed of silicon carbide (SiC) as the aggregate (with a content usually ≥ 80%).
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
Refractory cement, also known as aluminate cement, is a fire-resistant hydraulic cementitious material.
High alumina fine powder is a powder material with alumina (Al2O3) as the main component.
