Alumina Bubble Thermal Insulating Refractory Brick for Glass Furnace

In line with the concept of 'success depends on products, credit comes from satisfactory service', we constantly provide users with excellent Electric Arc Furnace, Fire Clay Brick, Insulating Brick and perfect after-sales service. We truly implement the principle of 'quality assurance as the guide, customer satisfaction as the core, and courteous service as the backing'. Practice has proved that our unique innovative ideas can enable our company to win the market's favor in the competition. We strengthen our internal management by taking the customer's reaction and the dynamic change information of the market as the directional pointer to better serve our customers. In the future development, we will continue to adhere to the corporate philosophy of creating with heart and adhering to the corporate spirit of loyalty, dedication and innovation.

1.Bubble Alumina Brick Description

Bubble Alumina Brick is a kind of energy-saving heat insulation material of ultra-high temperature material. It is made of alumina hollow ball and alumina powder as the main raw materials, combined with other binders, and fired at a high temperature of 1750 degrees.

Item	Bubble alumina brick			Bubble zirconia brick
	85	90	99	98
Max service temperature	1680°C	1700°C	1800°C	2200°C
Al2O3/%	≥85	≥90	≥99	-
ZrO2/%	-	-	-	≥98
SiO2 /%	≤13	≤8	≤0.2	≤0.2
Fe2O3/%	≤0.2	≤0.2	≤0.2	≤0.2
Bulk density/g.cm3	1.4-1.7	1.4-1.7	1.4-1.7	≤3.0
Cold crushing strength/Mpa	≥12	≥10	≥9	≥8
Refractoriness under load (0.1MPa,0.6%)	≥1650°C	≥1700°C	≥1700°C	≥1700°C
Reheating Linear Change % (1600 °C,3h) ≤	±0.3	±0.3	±0.3	±0.3
Thermal expansion coefficient (Room temp-1300°C)	~7.8	~8.0	~8.6	~9.0
Thermal conductivity w/(m.k)(Average 800°C)	≤0.8	≤1.3	≤1.5	≤0.3

2. Bubble Alumina Brick Feature

1. The temperature can reach above 1750 degrees, and the thermal stability is good.

2. The reheating line has a small change rate and can be used for longer.

3. It has obvious thermal insulation properties and low thermal conductivity

4. Reduce heat dissipation and improve thermal efficiency

3.Bubble Alumina Brick Application

High alumina bubble bricks are suitable for cracking furnaces, hot blast furnaces, heating furnaces, tunnel kilns, crucible furnaces, electric furnaces, and electric furnace linings.

Our company is concerned about the market and customers, our Alumina Bubble Thermal Insulating Refractory Brick for Glass Furnace are developed through market research, our products are fashionable and attractive. Our pursuit and enterprise aim would be to 'Always fulfill our buyer requirements'. We are in firm belief that continuously improving independent innovation is the source of enterprises' sustained development.

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