Lightweight Hot-Face Lining for High-Temperature Furnaces
Polycrystalline Mullite Fiber Veneer Block is a lightweight insulation module designed for the hot-face lining of industrial furnaces and kilns. It is made from polycrystalline mullite fiber through cutting and compression processes. No binder or other filling material is added, and the product contains no shot. This structure helps retain the original elasticity, softness, and fiber characteristics of the material.
The NC-1600 grade has a classification temperature of 1600°C. When continuously exposed to high temperatures in oxidizing, neutral, or reducing atmospheres, the material can maintain its flexibility, strength, and structural condition. It is suitable for furnace systems where lining weight, heat storage, and thermal stability are important considerations.
Thermal Performance and Furnace Lining Applications
The block combines low heat storage, low thermal conductivity, thermal shock resistance, sound absorption, high heat reflectivity, uniform fiber diameter, and good chemical stability. It can also withstand a certain degree of high-temperature gas flow.
Polycrystalline Mullite Fiber Veneer Block can be bonded to the hot-face lining of heating furnaces, heat treatment furnaces, shuttle kilns, tunnel kilns, and roller kilns. It can also be used around furnace doors and furnace covers where insulation and sealing structures are required.
A common size is 200 × 100 × (30–100) mm. This range allows buyers to select a suitable thickness according to lining design, installation space, or the area that needs local repair. NC-1600 and NC-1700 grades are available for different temperature requirements.
Production Control and Custom Size Support
Zhejiang Nengcheng Crystal Fiber Co., Ltd. operates an integrated production system covering crystal fiber raw materials, fiber formation and crystallization, fiber module processing, and finished-product machining.
For veneer blocks, fiber arrangement, compression condition, and dimensional consistency are important during production. The production team coordinates material formulation, fiber processing, and module forming, with participation from R&D, process, and quality control personnel.
The company has 11 years of operating experience and 45 employees. Technical staff can discuss product selection based on hot-face temperature, furnace design, installation position, and sealing method.
For non-standard furnace linings or furnace modification projects, OEM, ODM, and size customization are available according to technical drawings or physical prototypes.
Sampling, Inspection and Order Coordination
Samples can be prepared before bulk production to confirm structure and installation compatibility. Customized sample development normally takes 7–15 days.
Standard products generally require 15–25 working days for production, while customized products normally require 20–45 days. Photos or videos can be provided during production to help buyers follow order progress.
Finished products are normally inspected before packaging, and third-party inspection is accepted. These arrangements allow Polycrystalline Mullite Fiber Veneer Block orders to be checked for model, dimensions, and product condition before bulk shipment.
Product Specifications
|
Parameter |
NC-1600 |
NC-1700 |
|
Classification Temperature |
1600°C |
1700°C |
|
Chemical Composition |
Al₂O₃ 72%–75%, SiO₂ 25%–28% |
Al₂O₃ 95%, SiO₂ 5% |
|
Bulk Density |
100 kg/m³ |
100 kg/m³ |
|
Permanent Linear Change on Heating |
1500°C × 6h < 1% |
1600°C × 6h < 1% |
|
Common Size |
200 × 100 × (30–100) mm |
200 × 100 × (30–100) mm |
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