Alumina Bubble Bricks

Alumina Bubble Bricks are manufactured with alumina bubble ball and alumina powder as the main raw materials and combine with other binding agents through firing in the high temperature of 1750℃, which belong a kind of refractory materials with features of super high temperature, saving energy and thermal insulation.

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Description For Alumina Bubble Bricks

Alumina Bubble Bricks adopt alumina bubble ball as the main raw materials, high-performance ultrafine powder as the annexing agent and organic substance as the binding agent through molding and drying, and then are fired in the high temperature shuttle kiln.

Alumina Bubble Bricks Properties

• Light weight
• High temperature resistance
• Low reheating linear change
• Good thermal shock resistance
• Lower construction cost
• Saving energy

Alumina Bubble Bricks Application

Alumina Bubble Bricks are widely used in the high temperature kilns of metallurgy industry, chemical engineering industry, glass industry, ceramics industry and refractory materials industry.

Alumina Bubble Bricks Manufacturing Process

• Burdening
• Molding
• Body drying
• Firing
• Finished

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Alumina Bubble Bricks Specification

Item/Index	Alumina Bubble Ball	Zirconia Bubble Ball	Sialon Binding Al2O3 Bubble Bricks
	LKZ-88	LKZ-98	ZKZ-98	—
Maximum Service Temperature ℃	1650	1800	2000～ 2200	1600
Al2O3   % ≥	88	99	–	70
ZrO2   % ≥	–	–	9.8	–
SiO2  % ≤	–	0.2	0.2	–
Fe2O3  % ≤	0.3	0.15	0.2	N≥5
Bulk Density   g/cm	1.30～1.45	1.40～1.65	≤ 3.0	≤ 1.5
Cold Crushing Strength   MPa  ≥	10	9	8	15
Refractoriness Under Load  ℃ (0.2MPa，0.6%) ≥	1650	1700	1700	1700
Reheating Linear Change Rate  % 1600℃×3hrs	±0.3	±0.3	±0.2	–
Thermal Expansivity ×10 (indoor temperature, ～1300℃)	～8.0	～8.6	–	thermal shock resistance, times　　(1100℃water cold)≥15
Thermal Conductivity  W/(m.K) ≤ (average temperature 800℃)	0.9	1.0	0.5	1.1
Application	Application in the chemical engineering industry as the insulation lining for carbon black furnace and linings for high temperature kilns in the ceramics and refractory materials industry.	Application in the chemical engineering industry as the insulation lining for carbon black furnace, gasifier and gas-making furnace, and the lining of high temperature kilns.	Used as thermal lining of in the high temperature kilns with 2000~2200℃.	Used as the hot-face lining of ceramic kilns and other high temperature kilns with 1400~1600℃.

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Advantages of Alumina Bubble Bricks

Alumina Bubble Brick can lighten the weight of furnace body, save refractory materials and energy.

• High Service Temperature
  Alumina Bubble brick can service high temperature over 1750℃ with good thermal shock resistance. It has lower reheating linear change rate and longer service life.
• Structural Improvement
  Now most used refractory materials belong to heavy brick, their bulk density reaches 2.6~3.0g/cm. But the alumina bubble bricks’ bulk density only has 1.1~1.5g/cm. For the same one stere bulk density, using alumina bubble brick can lighten 1.1~1.9 tons weight.
• Saving Materials
  Because its lightweight feature, using alumina bubble bricks can save 80% refractory insulation materials.
• Saving Energy
  Alumina Bubble Bricks have properties of thermal insulation and low thermal conductivity, which can play good insulation effect, reduce the heat dissipation, improve thermal efficiency and save energy reaching up to 30%.

Alumina Bubble Bricks Manufacturer

Rongsheng Refractory is a professional refractory bricks manufacturer can manufacture high quality alumina bubble bricks with advanced production technology and manufacturing equipments. Based on our study on manufacturing, we can sale alumina bubble bricks with low price for customers saving cost. Wanna learn more about refractory fire bricks information, browse other pages on my website or directly contact us for free quote!