Aluminum Silicate Insulation
Aluminum Silicate Industrial Insulation
High-Temperature Thermal Management Solutions
Aluminum silicate insulation is a lightweight, high-performance refractory material engineered for continuous service under severe thermal loads. Produced from high-purity alumina-silica fibers via controlled spinning and blowing processes, it combines low thermal conductivity, high thermal stability, and minimal heat storage. It is widely specified for industrial furnaces, kilns, boilers, petrochemical heaters, and high-temperature pipe networks.
Compared to traditional heavy refractory bricks or calcium silicate boards, aluminum silicate products significantly reduce structural heat loss, shorten thermal cycling times, and lower overall equipment weight without sacrificing mechanical integrity.
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![Aluminium Silicate Blanket]()
Aluminium Silicate BlanketProduct form: aluminium silicate fiber blanket. aluminium silicate blanket is prepared for kiln lining, high-temperature pipes, furnace doors, and hot equipment shells.read more -
![Aluminum Silicate Fiber Blanket]()
Aluminum Silicate Fiber BlanketProduct form: ceramic fiber blanket for high heat insulation. aluminum silicate fiber blanket is prepared for furnace walls, boiler areas, heat treatment equipment, and hot gas ducts.read more -
![Aluminum Silicate Tube]()
Aluminum Silicate TubeProduct form: aluminum silicate pipe insulation tube. Aluminum Silicate Tube is prepared for steam pipes, thermal oil pipes, furnace connection pipes, and short hot pipe branches.read more -
![Aluminum Silicate Insulation Tube]()
Aluminum Silicate Insulation TubeAluminum Silicate Insulation Tube is a preformed fiber section for boiler pipework, process-heating lines, and high-temperature service branches.read more
Selection starts with the pipe outside... -
![Aluminum Silicate Fiber Tube]()
Aluminum Silicate Fiber TubeAluminum Silicate Fiber Tube is a compact preformed insulation section for small hot-pipe runs, thermal-equipment outlets, and crowded service spaces.read more
Tube bore and wall thickness are...
Technical Performance & Engineering Advantages
1. High-Temperature Stability & Thermal Rating
Maintains structural stability and low linear shrinkage under continuous high-temperature exposure.
Continuous Operating Temperature
1000°C to 1260°C (higher-grade formulations available for applications up to 1400°C).
Engineering Impact
Prevents fiber crystallization collapse during prolonged thermal exposure, minimizes maintenance downtime, and extends the operational lifecycle of furnace linings.
2. Low Thermal Conductivity
The fine, interlocking ceramic fiber matrix traps stationary air pockets, drastically reducing conductive and convective heat transfer across varying temperature gradients.
| Mean Temperature | Thermal Conductivity (W/m·K) |
| 200°C | 0.05 – 0.07 |
| 400°C | 0.08 – 0.10 |
| 600°C | 0.12 – 0.15 |
| 800°C | 0.16 – 0.20 |
Engineering Impact: Lowers external shell temperatures, reduces fuel/electricity consumption, and improves the overall thermal efficiency of thermal equipment.
3. Low Heat Storage Capacity
Unlike dense firebricks, aluminum silicate insulation features a low bulk density and minimal heat capacity.
Engineering Impact: Allows for rapid furnace heat-up and cooling cycles. This is particularly advantageous for batch-operated industrial furnaces, short-run heat treatment, and frequent-shutdown applications.
4. Lightweight Construction & Structural Efficiency
Bulk Density: 64 – 160 kg/m3 (depending on the product form and grade).
Engineering Impact: Significantly lowers deadweight on supporting steel structures, simplifies on-site handling, and reduces overall transportation and installation labor costs.
5. Thermal Shock Resistance
The flexible matrix of ceramic fibers absorbs mechanical and thermal stresses caused by rapid temperature fluctuations, preventing the cracking and spalling commonly seen in rigid refractories.
6. Chemical Resistance & Acoustics
Chemical Stability: Inert to most industrial chemicals, with strong resistance to oxidation and reduction atmospheres (excluding hydrofluoric acid, phosphoric acid, and concentrated strong alkalis).
Acoustic Absorption: The porous, fibrous structure dampens high-frequency equipment noise, contributing to a quieter industrial environment.
Product Specifications
| Property | Specification Value |
| Base Material | Alumino-Silicate Ceramic Fiber |
| Color | White |
| Continuous Service Temperature | 1000°C – 1260°C |
| Classification Temperature | 1050°C – 1400°C (Grade Dependent) |
| Bulk Density | 64 – 160 kg/m3 |
| Fiber Diameter | 2 – 5 um |
| Combustibility | Non-Combustible (Inorganic) |
| Available Forms | Blanket, Board, Paper, Module, Bulk Fiber |
Available Product Forms
Fiber Blanket
Flexible, needle-punched insulation blankets optimized for irregular surfaces, furnace linings, boilers, and pipe expansion joints.
01
Rigid Board
High-density, self-supporting insulation boards offering superior compressive strength for high-load furnace walls and heat shields.
02
Insulation Paper
Ultra-thin, flexible ceramic paper utilized for precision gasketing, thermal break seals, and electrical insulation layers.
03
Modular Linings
Pre-compressed, anchor-ready ceramic fiber modules designed for fast, large-scale furnace installation and uniform thermal performance.
04
Bulk Fiber
Loose, unbonded fibers used for packing complex cavities, expansion joints, and raw material compounding.
05
Industrial Applications
Steel reheating furnaces, ladles, tundishes, and continuous annealing lines.
Pyrolysis cracking furnaces, steam reformers, catalytic reactors, and high-temperature transfer lines.
Tunnel kilns, shuttle kilns, glass melting tanks, and forehearth insulation.
Utility boilers, steam headers, gas turbine exhaust ducting, and heat recovery steam generators (HRSGs).
Batch tempering, carburizing, and hardening furnaces requiring rapid thermal cycling.
Manufacturing & Quality Control
Production runs are strictly monitored to ensure physical and thermal consistency:
- High-purity raw material inspection and batch blending.
- Controlled fiber spinning, blowing, and needle-punching density.
- In-house verification of thickness, tensile strength, linear shrinkage, and high-temperature thermal conductivity.
Custom Options
Dimensions: Custom lengths, widths, thicknesses, and die-cut configurations.
Density adjustments: Tailored to specific load-bearing or insulation requirements.
Packaging: Vacuum-compressed, palletized, export-grade packaging with optional OEM/private labeling.
FAQ
Q: What is the maximum operating temperature?
A: Most standard products are designed for continuous operation between 1000°C and 1260°C. Higher-temperature grades are available for specialized industrial applications.
Q: Which product form should I choose?
A: Blankets are ideal for flexible insulation and curved surfaces, boards provide rigid structural insulation, paper is suitable for sealing applications, and modules are commonly used for complete furnace linings.
Q: Is aluminum silicate insulation non-combustible?
A: Yes. Aluminum silicate fiber is an inorganic, non-combustible insulation material suitable for high-temperature industrial environments.
Q: Can the insulation be customized?
A: Yes. We manufacture customized sizes, densities, thicknesses, shapes, and OEM packaging according to customer specifications.
Q: Does the material absorb moisture?
A: The fibers themselves are chemically stable and generally resist moisture absorption. However, insulation performance is best maintained when products are stored in dry conditions before installation.
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