High-Alumina Ceramic Fiber Blanket

Name: High-Alumina Ceramic Fiber Blanket
Brand: ZOUYU

Ceramic Fiber Blanket - Swinging Fibre Thermal Insulation

Product Overview

ZOUYU high-alumina ceramic fiber blankets are manufactured using advanced swinging fibre technology, producing lightweight, flexible, and high-strength thermal insulation. With a classification temperature of 1360°C and working temperature up to ≤1200°C, this grade is ideal for demanding high-temperature industrial applications.

Key Features

Low thermal conductivity and low heat capacity
Excellent thermal stability and anti-thermal shock performance
Good tensile strength and flexibility
Easy to cut, wrap, and install
Resistance to gas erosion and chemical attack
Double-side needle-punched for enhanced strength

Applications

Industrial Furnaces Heating Devices High-Temp Duct Linings Chemical Reaction Vessels Power Plants High-Rise Fire Protection Kiln Doors

Technical Specifications

Property	COM (Ordinary)	ST (Standard)	HP (High-Purity)	HA (High-Alumina)	HZ (Zirconia)
Classification Temperature	1100°C	1260°C	1260°C	1360°C	1430°C
Working Temperature	≤1000°C	≤1050°C	≤1100°C	≤1200°C	≤1350°C
Density (kg/m³)	96	128	128	128	128
Al₂O₃ (%)	44	46	47-49	52-55	39-40
Al₂O₃ + SiO₂ (%)	96	97	99	99	--
ZrO₂ (%)	--	--	--	--	15-17
Fe₂O₃ (%)	<1.2	<1.0	<0.2	<0.2	<0.2
Standard Size	7200 × 610 × 10-50 mm

FAQ

Frequently Asked Questions

Technical and commercial answers for this product. If your question is not here, our engineers will answer it directly.

What is the difference between classification temperature and working temperature?

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Classification temperature is the laboratory grading point at which a sample stays within a defined linear shrinkage after 24 hours. It is a grade label, not a service limit. Working temperature is the continuous-use ceiling in a real furnace atmosphere, and that is the number you should design to. The HA grade is classified at 1360°C and rated for continuous service at up to 1200°C.

When should I choose HA instead of HP?

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HA raises Al₂O₃ content to 52-55% and lifts the continuous working temperature from 1100°C to 1200°C. Choose HA when the continuous hot face runs above 1100°C, when the furnace cycles frequently, or where higher hot-face strength is needed.

How does HA perform under thermal cycling?

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The higher alumina content slows crystal growth at temperature, which reduces permanent shrinkage over repeated heat-up and cool-down cycles. For that reason HA is often specified on batch furnaces rather than continuously running ones, even where peak temperature would permit HP.