Insulating Fired Brick with 65% Al2O3 min High Alumina

Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
1 m.t.
Supply Capability:
100000 m.t./month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:

Insulating Fired Brick with 65% Al2O3 min High Alumina


Insulating Fired Brick with 65% Al2O3 min High Alumina is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.

This series of High Alumina Insulating Fire Brick are made of selected high alumina bauxite, kaolin caly, hollow microsphere as the mian material.By shaping at high pressure and sintering at high temperature. 


Data of Insulating Fired Brick



Hihg Alumina brick


Clay brick
Phosphoric acid dipping clay brick
GL-65 GL- 55GL- 48ZGN-42 ZGN-42
Chemical Compositions ( %)  ≥Al2O3 6555484242
P2O5 -----7
Refractoriness ℃ 1790 1770 1750  17501750-
Apparent Porosity
1919 18 15 1614
Alkali resistance
(strength degradation)%≤
0.2MPaRefractoriness under load,℃≥ 1500 1480 1450 1450 1430 1450
58.8 49 49 58.8 49 60
Dead burnt linear change(%)≤ 1450℃×2h 0/-0.2 0/-0.2 0/-0.30/-0.2
1500℃×2h 0/-0.2


Features of Insulating Fired Brick

1.Low heat storage and low thermal conductivity;

2.High compression strength;

3.Non–fragile materials and good toughness;

4.Accurate dimension and good palneness;

5.Structure homogeneity and easy machining;

6.Easy to install

7.Continual production, even fiber with stable property;

8.Excellent heat stability and thermal shock resistance


Application of Insulating Fired Brick

1.Cement building industry, kiln back lining-thermal insulation;

2.Ceramic industry-lining of various kilns for thermal insulation;

3.Petrochemical and metallurgy industries- back linings, wall linings, and linings-thremal insulation;

4. Glass kiln lining and back lining thermal insulation;

5.Heat treatment furnace kiln back lining thermal insulation;

6. Aluminium factories-reduction cell firebricks back linings;

7.High temperature reaction, heating device-wall lining and back linings


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range