Ceramic fiber modules for industrial furnaces

1. Product Overview

Ceramic fiber modules are made from high-purity aluminosilicate raw materials through high-temperature melting, three-dimensional weaving, and compression pre-loading techniques. They are specifically designed for industrial furnaces, pipelines, and other high-temperature equipment to achieve efficient thermal insulation and energy saving.

2. Main Raw Materials

Ø Ceramic fibers (aluminosilicate fibers): Made from bauxite, silica, etc., via high-temperature melt-blown or fiber-spinning processes. Fiber diameters typically range from 2–5 μm, with lengths of 30–200 mm.

Ø Binders: Such as silica sol or alumina sol, used to enhance the module’s post-forming strength. Binders volatilize or sinter at high temperatures without affecting insulation performance.

Ø Additives: Such as water repellents or anti-slagging agents, added to optimize properties for specific applications (e.g., moisture resistance, corrosion protection).

3. Technical Parameters

Note: For other technical specifications, please consult the sales manager.

4. Classification

ü By service temperature:

（1）Low temperature (≤800℃)

（2）Medium temperature (800–1260℃)

（3）High temperature (1260–1400℃, e.g., zirconia fiber modules)

ü By structural form:

（1）Standard rectangular modules

（2）Custom-shaped modules according to furnace structure

5. Applications

n Industrial Furnaces:

（1）Metallurgy: heating furnaces, annealing furnace insulation

（2）Petrochemical: cracking furnaces, reaction furnaces

（3）Building materials: ceramic kilns, glass kiln linings

n Thermal & Energy Equipment:

（1）Boiler flues, steam pipe insulation

（2）Power plant turbines, waste heat recovery insulation

（3）High-Temperature Laboratory Equipment:

（4）Muffle furnaces, high-temperature tunnel kiln linings

6. Precautions

ü Moisture protection: Use hydrophobic modules in humid environments to prevent fiber absorption and reduced insulation performance.

ü High-temperature oxidation resistance: Apply refractory coatings (e.g., mullite coating) to flame-exposed surfaces.

ü Anchor compatibility: Choose appropriate materials (e.g., stainless steel 304/310S) to avoid corrosion or failure at high temperatures.

7. Anchor Installation & Guidelines

² Insert the guide rod into the anchor bolt, align the module center hole with the rod, and push vertically to the furnace wall. Tighten the nut with a sleeve wrench to preset torque.

² Installation sequence: roof → walls, from bottom to top row to avoid deformation.

² Insert compressed compensating blankets (two 20 mm blankets stacked to 25 mm) between rows; fix with U-shaped pins every 500 mm to prevent thermal shrinkage gaps.

² Align installation direction with module folding/compression direction to prevent rebound.

² For corrosive environments like gas furnaces, apply a curing agent to extend service life.

² Inspect module fit and anchor firmness every 20% progress during installation.

² Workers must wear dust masks and heat-resistant gloves to avoid fiber irritation.

8. FAQ

Q1: What is the service life of ceramic fiber modules?
A1: Typically 5–8 years under normal conditions; up to 10 years in non-corrosive environments.

Q2: What precautions should be taken before use?
A2: Check anchor welds for firmness; avoid moisture or stepping on modules.

Q3: Is higher density better for ceramic fiber modules?
A3: No; excessive density can increase heat transfer, causing fiber breakage and reducing insulation performance. Typical density is 220 kg/m³.