High Alumina Insulation Brick

High Alumina Insulation Brick, also known as Light Weight High Alumina Brick, are used in building heat insulating walls or heat preserving walls, which is basically for preserving or insulating heat. Light weight high alumina bricks contain more than 45% alumina oxide. This kind of brick does not directly exposed to high temperature inside kilns or furnaces, it only built closely to the kiln wall as insulation layers. It is a good insulation refractory material, which has a high compressive strength, low thermal conductivity and good insulation quality.

Characteristics:
1.Low thermal conductivity.
2.Low bulk density.
3.High mechanical strength.


Application:
The light weight high alumina insulation brick can be used for the steel making industry.

Technical Data Sheet:

Item	High Alumina Insulation Brick
	LG-0.6	LG-0.8	LG-1.0	LG-1.3
Al2O3 (%)  ≥	45	48	48	48
Fe2O3 (%)  ≤	2.0	2.0	2.0	2.0
Bulk Density (g/cm³)  ≤	0.6	0.8	1.0	1.3
Crushing Strength (MPa)  ≥	1.8	2.5	3.0	5.0
Linear Change on Reheating 2% (℃*h)  ≤	1200℃*12h	1250℃*12h	1300℃*12h	1350℃*12h
Thermal Conductivity (w/m.k,{350±25℃})  ≤	0.25	0.32	0.45	0.55
Max Service Temperature(℃)   ≥	1250	1250	1300	1350