Alumina Bubble Insulating Bricks Series for Glass Furnace

With a highly technical accumulation and a comprehensive after-sales management system, our Refractory Ceramics Crucible, Unshaped Refractory Materials, Refractory Ceramics Saggar has been sold worldwide and has been unanimously recognized by customers. Over recent years, our company has expanded continuously, enhanced our comprehensive strength and improved its capability in service and quality. We actively listen to employees' expectations and demands, effectively protect their legitimate rights and interests, and actively build harmonious and stable labor relations. We are willing to work together with old and new friends from all walks of life to create a better tomorrow with a sincere attitude of cooperation.

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.

We adhere to the tenet of 'Integrity, Integrity, Focus on Innovation' and maintain our leading position in the industry of Alumina Bubble Insulating Bricks Series for Glass Furnace. Our company sets scientific research, trade and import and export business all in one, and we have a high prestige in the domestic market. Customer relationship management can optimize the relationship between our company and customers and make the customer life cycle continue, so as to achieve long-term benefits for our company.

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