Ceramic fiber insulation (also spelled ceramic fibre insulation) is a class of lightweight refractory materials made primarily from alumina–silica fibers. It delivers low thermal conductivity, ultra-low heat storage, and excellent thermal shock resistance, making it ideal for lining, backing, and sealing in tube furnaces, muffle furnaces, kilns, heat-treating furnaces, petrochemical heaters, boilers, and incinerators.

Common product forms

• Ceramic Fiber Blanket (rolled, needled)
• Ceramic Fiber Board (rigid, vacuum-formed)
• Ceramic Fiber Paper/Gasket (thin, flexible)
• Ceramic Fiber Module (pre-folded blocks for fast lining)
• Ceramic Fiber Rope/Tape/Sleeve (sealing and wrapping)
• Bulk Fiber & Vacuum Shapes (custom molded parts)

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Key Benefits (Why It Wins)

• Low thermal conductivity → reduces shell losses and fuel/electricity usage.
• Low heat storage → faster heat-up/cool-down; supports intermittent operations.
• Lightweight (typ. 64–160 kg/m³) → less structural load vs. bricks/castables.
• Thermal shock & vibration resistant → fewer spalls and cracks.
• Quick installation & easy maintenance (modules/boards/blankets).
• Wide temperature grades: 1260°C, 1360°C, 1400°C, 1430°C (ZrO₂-reinforced).
• Clean cuts and flexible fabrication → gaskets, sleeves, custom shapes.

Long-tail keywords: ceramic fiber blanket insulation, ceramic fiber board insulation 1260C, zirconia ceramic fibre 1430C, lightweight refractory insulation, low thermal conductivity insulation for furnaces.

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Typical Specifications (Reference Values)

• Classification temperature: 1260–1430°C
• Recommended continuous service: up to 1000–1300°C (by grade)
• Density: 64 / 80 / 96 / 128 / 160 kg/m³ (product-dependent)
• Thermal conductivity (W/m·K): ~0.08–0.22 at 200–1000°C
• Linear shrinkage: ≤1–2% at classification temperature (24 h)
• Standard sizes:
  • Blanket: 7–50 mm thickness, 610 mm width (or custom)
  • Board: 10–100 mm thickness, 600×900 / 1000×1200 mm
  • Paper: 0.5–10 mm thickness, various widths
  • Module: 300×300 / 300×600 / 600×600 mm; 100–300 mm thickness

Keywords to capture: ceramic fibre insulation 128 kg/m3, low shot content, reinforced ceramic fiber board, stainless steel 310S anchor system.

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Applications & Use Cases

• Metals & Heat Treatment: quench/temper/anneal furnaces, brazing, sintering.
• Steel & Non-Ferrous: reheating, holding, aluminum melting/holding.
• Ceramics & Glass: shuttle/tunnel/roller kilns, annealing lehrs, forehearths.
• Petrochemical & Energy: cracking, reforming, boilers, heaters, incinerators.
• Laboratory Equipment: tube furnaces, muffle furnaces, CVD/PECVD, as backing insulation or hot-face liners.
• Sealing & Expansion Joints: doors, viewports, ducting, flanges.

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Product Selection Guide

1. Temperature & Atmosphere
   • Standard alumina-silica for oxidizing atmospheres.
   • Zirconia-enhanced for hot spots/1400°C class.
   • Consider sulfur/alkali/chlorine – use coatings or protective layers if needed.
2. Form Factor
   • Blanket for wraps/backing layers and expansion seams.
   • Board for flat panels, burner blocks, and structural insulation.
   • Paper for gaskets, electrical isolation, anti-dust wraps.
   • Module for large industrial linings needing fast install and low downtime.
3. Density & Thickness
   • Higher density → better hot-face durability & lower k-value; balance with weight and cost.
   • Size thickness to meet target shell temperature and energy goals.
4. Anchoring & Joints
   • Select 304/310S/Incoloy/Inconel anchors per hot-face temperature.
   • Stagger joints; fill gaps with matching blanket/paper to avoid hot spots.
5. Surface Treatment
   • Ceramic coatings/hardeners to reduce fiber erosion/dusting and improve gas-flow resistance.

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Installation Best Practices

• Prepare and clean shell; weld studs/rails to spec.
• Orient fibers perpendicular to the hot face (modules/boards) for erosion resistance.
• Staggered joints ≥50%, compress blanket layers to design density.
• Back-up insulation behind hot-face layer to meet shell temperature limits.
• Apply coating on hot face where high velocity or abrasion exists.
• Follow controlled bake-out curve to remove binders and minimize shrinkage.

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Health & Compliance (RCF vs. AES)

• Traditional RCF (refractory ceramic fiber) may be regulated in some regions.
• AES (alkaline earth silicate) bio-soluble fiber provides RCF-free options with improved biosolubility and easier compliance for many applications (typically up to 1200–1260°C service).
• Use proper PPE, dust extraction, and follow local HSE guidelines during cutting/installation.

Long-tail keywords: bio-soluble ceramic fibre, AES insulation blanket, RCF-free insulation, HSE compliant furnace insulation.

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Ceramic Fiber vs. Traditional Refractories

Feature	Ceramic Fiber Insulation	Firebrick/Castable
Thermal conductivity	Very low	Higher
Heat storage	Very low	High
Weight	Light	Heavy
Install time	Fast	Slow (cure/dryout needed)
Thermal shock	Excellent	Moderate–High (type-dependent)
Best use	Energy efficiency, retrofits, maintenance	Hot-face wear, extreme load/impact

FAQ (for Featured Snippets)

Q1: What temperature can ceramic fiber insulation handle?
A: Classification 1260–1430°C; continuous service commonly up to 1000–1300°C depending on grade.

Q2: Is ceramic fiber insulation safe?
A: Use PPE and dust control. For easier compliance, consider AES bio-soluble grades (RCF-free) where suitable.

Q3: Which is better—blanket or board?
A: Blanket for wraps/backing and complex shapes; board for rigid panels, burner blocks, and smooth hot faces.

Q4: Can I retrofit an existing furnace with ceramic fiber?
A: Yes. Fiber linings reduce shell temperature and energy use; verify anchor design and expansion joints.

Q5: Does it work with castables or bricks?
A: Yes. Hybrid linings combine castable/bricks on the hot face with ceramic fiber backing for best durability + efficiency.

Ceramic Fiber Heating Module		YX1260	YX1400	YX1500	YX1600	YX1700	YX1800
Working Temperature(℃)		1100	1200	1350	1500	1600	1700
Density(kg/m³)		300-600	300-600	300-600	300-600	450-700	450-700
Linear Shrinkage(24H) (After Burning) (%)		≤3.0 (1100℃)	≤3.0 (1250℃)	≤3.0 (1300℃)	≤1.0 (1450℃)	≤1.0 (1550℃)	≤1.0 (1650℃)
Thermal Conductivty Rate (W/m.k)	400℃	0.084	0.084	0.084	/	/	/
	800℃	0.128	0.125	0.125	0.160	0.160	0.160
	1000℃	0.176	0.174	0.200	0.210	0.210	0.210
Heating Element		Resistance wire	SiC heating element	SiC heating element	MoSi2 heating element	MoSi2 heating element	MoSi2 heating element
Furnace Chamber Size		Customized	Customized	Customized	Customized	Customized	Customized
The sizes and packaging can be customized according to your needs

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