Aluminum Silicate Fiber Board 1260°C – Rigid Ceramic Fiber Insulation for Industrial Furnaces

Where Aluminum Silicate Fiber Board Fits

Aluminum silicate fiber board is best suited to applications requiring a rigid, lightweight and machinable insulation layer. Selection should be based on the actual service temperature, lining position, furnace atmosphere, mechanical exposure and thermal cycling—not classification temperature alone.

• Furnace Doors & Access Panels

  Hot spots, damaged door linings and poorly fitted openings can increase heat loss and maintenance frequency. Rigid ceramic fiber board maintains a defined insulation thickness and can be supplied with cutouts for burners, peepholes, flanges, thermocouples and fixing systems. Send your door drawing, operating temperature and required thickness for a grade and geometry review.

• Industrial Furnace & Kiln Linings

  For new furnace construction, relining and energy-improvement projects, ceramic fiber board provides a lightweight, low-heat-storage layer for heat-treatment furnaces, sintering furnaces, reheating furnaces and industrial kilns. Available classification grades can be reviewed for hot-face or backup use according to the actual temperature, atmosphere and thermal cycles. Tell us the furnace type and lining position to identify a suitable starting specification.

• Backup Insulation for High-Temperature Equipment

  When casing temperature, lining weight or available installation space matters, aluminum silicate fiber board can be installed behind refractory brick, castable or another protective hot-face material. It is suitable for holding furnaces, launders, boilers, incinerators and combustion chambers where the hot-face layer handles direct process exposure. Share the existing lining structure, available thickness and target shell condition for a material review.

• Shutdown Maintenance & Replacement

  Shrunken, eroded or mechanically damaged boards do not always require a complete lining rebuild. ADCERAX can review pre-cut replacement panels from drawings, dimensions or photographs of the old board, helping reduce on-site cutting and limit demolition to the damaged area. Send the old-board photo, size, working temperature and required quantity to prepare a replacement-board recommendation.

Aluminum Silicate Ceramic Fiber Board Usage Guide

• Installation

  1. Confirm that the supporting steel or refractory surface is clean, dry and free of loose debris before installing aluminum silicate fiber board.
  2. Plan the panel layout so that joints are staggered, and cut boards accurately to achieve tight-fitting joints with minimal gaps.
  3. Fix boards using suitable anchors, screws or adhesives designed for ceramic fiber products, avoiding excessive mechanical stress on individual panels.
  4. Where tongue-and-groove or chamfered edges are used, orient the panels consistently to minimize heat leakage lines.

• Operation and Use

  1. Use aluminum silicate fiber board within the recommended continuous service temperature for the selected grade, allowing a margin below its classification temperature.
  2. During initial heating, follow a controlled heating schedule if specified, so that binders can burn out gradually and steam can escape without causing cracking.
  3. Avoid direct flame impingement on the board surface unless the design and grade have been selected for that specific duty.

• Storage

  1. Store aluminum silicate fiber board indoors or under cover to protect it from rain and standing water.
  2. Keep panels on flat pallets or shelves to prevent bending and warping during long-term storage.
  3. Maintain original wrapping as long as possible to limit dust and contamination until installation.

• Cleaning and Maintenance

  1. Remove loose dust with a soft brush or low-pressure vacuum fitted with appropriate filtration to prevent fiber release into the workplace.
  2. Inspect panel joints and anchor locations during scheduled shutdowns, and replace damaged or eroded sections before they affect the main lining.
  3. When cutting or trimming in the workshop, use appropriate dust extraction and personal protective equipment according to local guidelines for handling ceramic fibers.

• Common Misuse and Correction

  1. Using the board above its classification temperature
  Misuse: Selecting a 1050°C or 1260°C aluminum silicate fiber board for continuous service close to or above its classification temperature.
  Correction: Choose a grade with a higher classification temperature and adjust lining design to keep the board within a suitable operating range.

  2. Over-tightening mechanical fixings
  Misuse: Applying anchors, screws or clamps with excessive force, leading to localized compression and cracking.
  Correction: Follow recommended fixing spacing and torque, and consider using washers or clips that distribute load across the board surface.

  3. Outdoor storage without protection
  Misuse: Leaving pallets of aluminum silicate fiber board exposed to rain, which can introduce moisture and weaken the binder near the surface.
  Correction: Store under a roof or waterproof cover, and if panels are exposed, allow sufficient drying during preheating or replace visibly damaged boards.

FAQ – Aluminum Silicate Ceramic Fiber Board

1. Q: What is aluminum silicate fiber board used for in industrial furnaces?
   A: Aluminium silicate fiber board is used as a rigid high temperature insulation layer in the walls, doors and roofs of industrial furnaces, kilns, boilers and incinerators to reduce heat loss and lower shell temperature.
2. Q: What temperature can aluminum silicate fiber board withstand?
   A: The classification temperature of aluminum silicate fiber board is typically 1050°C, 1260°C or up to around 1350–1430°C depending on grade, with recommended continuous service kept below these values for long-term stability.
3. Q: How does aluminum silicate fiber board differ from ceramic fiber blanket?
   A: Aluminum silicate fiber board is a rigid, pre-formed panel with higher compressive strength and dimensional stability, while ceramic fiber blanket is flexible; the board is preferred where flat surfaces, mechanical fixing and defined thickness are needed.
4. Q: Is aluminum silicate ceramic fiber board suitable for boiler insulation?
   A: Yes, aluminum silicate ceramic fiber board is commonly used as a back-up insulation layer in industrial boilers and combustion chambers, behind hot face refractory materials or metal liners.
5. Q: How do I select the thickness of aluminum silicate fiber board for my furnace?
   A: Thickness selection depends on target shell temperature, operating temperature and available space; many industrial furnaces use 25–50 mm of aluminium silicate fiber board as part of a multi-layer lining design.
6. Q: Can aluminum silicate fiber board be machined or cut to complex shapes?
   A: Aluminium silicate fibre board can be cut with hand tools or machine tools to create openings, chamfers and stepped profiles, and can be supplied as custom-shaped parts based on customer drawings.
7. Q: What's the difference between aluminum silicate fiber board and calcium silicate board?
   A: Ceramic fiber board is a lightweight, low-conductivity insulation for hot-face and back-up furnace linings, cut easily to size. Calcium silicate board has higher mechanical strength and load-bearing ability but higher conductivity and weight, and is chosen where structural support or moisture resistance matters more than lightweight insulation. We match the board to your position and duty.
8. Q: Is aluminum silicate fiber board safe, and do you offer AES / bio-soluble alternatives?
   A: Aluminum silicate (RCF) fiber can release airborne fibers when cut or handled, so ventilation, dust extraction and PPE should be used per local regulations — we don't claim it is dust-free. For the EU or sites with strict fiber rules, we can advise on AES / bio-soluble (low bio-persistence) board options; tell us your region and EHS requirements.
9. Q: Does the 1260°C rating mean I can run the furnace continuously at 1260°C?
   A: No. 1260°C is the classification temperature (a material rating), not the continuous service temperature. A 1260-grade board is typically used continuously around 1000–1100°C, and you should select a grade above your hot-face temperature with a safety margin.