Bubble Ball Refractory Block Insulation Insulating Alumina Hollow Brick

Our company not only sells better quality Industrial Ceramic Shuttle Kiln, Magnesia Brick, Refractory Plastic than our competitors, but also cheaper prices. With the care of government departments at all levels, our company has achieved good development, its industry status has been significantly improved, and a series of honors have been obtained. Our company always takes innovation and technology as the development direction, and returns the most energy-saving, environmentally-friendly and efficient products to new and old customers to maximize the interests of customers. We provide excellent products to benefit our customers and build a perfect platform for our team to realize their dreams. Taking pride in the country is reflected in praising the Party and patriotism, and taking responsibility.

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 are in a relatively high position in the industry, and we maintain close cooperation with foreign suppliers to provide Bubble Ball Refractory Block Insulation Insulating Alumina Hollow Brick, our products are exported to many countries and regions. Our company makes the staff realize the enterprise culture, understand the necessity of enterprise culture construction, stimulate the enthusiasm of staff participation, so as to create a good atmosphere of enterprise culture construction. We constantly strengthen the company's internal management, strictly control the product quality, and form a set of relatively perfect quality management system and quality assurance system, so that the product quality and performance indicators are stable and reliable, leading the industry.

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