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Alumina Bubble Brick

Alumina Bubble Brick is a brick made of alumina hollow spheres as the main raw material, high-performance alumina ultrafine powder as an additive, organic materials as a binder, and dried and formed. It has low thermal conductivity, thermal insulation and high compressive strength, and can work at the maximum temperature below 1800℃. Alumina foam brick has excellent heat resistance and heat insulation performance, and can be directly used as the working lining of high temperature kiln. It is mainly used in metallurgy, refractory materials, ceramics, petrochemicals and other fields, and can be

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Shape Refractory

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Alumina Bubble Brick Details

Features

1. High working temperature:

Alumina Bubble Brick can reach more than 1750 degrees and has good thermal stability. The change rate of the reignition line is small, and the use time is longer.

2. Optimize the structure and reduce the weight of the furnace body

3. Save material

4. Energy saving:

This Brick has obvious thermal insulation characteristics, low thermal conductivity, can play a very good thermal insulation effect, reduce heat dissipation, improve thermal efficiency, so as to achieve the purpose of energy saving.

Applications

Alumina Bubble Brick can be used in high-temperature shaft kilns, shuttle kilns, molybdenum wire furnaces, tungsten rod furnaces, induction furnaces, nitriding furnaces, etc., which can save at least 30% energy. The application of alumina foam brick can greatly reduce the weight of the furnace body, improve the structure of the furnace body, save refractory materials and save energy.

Specifications

Alumina contents range from 85% to99%

Widely used throughout metallurgical industry

Physical And Chemical Indicators

Properties Brand		LG-99	LG-90	LG-85
(%) Chemical Analysis	Al2O3	≥99	≥90	≥85
	SiO2	≤0.3	≤7	≤13
	Fe2O3	≤0.1	≤0.1	≤0.2
Bulk Density (g/cm3)		1.45~1.60	1.45~1.60	1.45~1.60
Cold Crushing Strength (MPa)		≥15	≥15	≥20
@ 1600℃ Permanent Linear Change (%)		±0.2	±0.2	±0.3
@ 800℃ Thermal conductivity (W/m.k)		≤1.4	≤1.4	≤1.4
(℃) Maximum Service Temperature		≥1800	≥1700	≥1600
Main Applications		Reheating Furnace BlastFurnace Petrochemical Furnace General Industrial Furnace etc.

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