High alumina lightweight insulating fire bricks are a kind of lightweight insulation refractory with regular shape which have a content of Al2O3 of more than 48%, and is mainly composed of mullite and glass phase or corundum. High alumina lightweight insulating fire brick have good performance in small bulk density, low thermal conductivity, stable quality and excellent thermal insulation performance. And they can be used for the lining or heat insulation layer of various kilns. If you have any questions or any needs, please email us for more details.

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Description of High Alumina Lightweight Insulating Fire Brick

The common features of insulating fire bricks are small bulk density, light weight and low thermal conductivity, but the strength of them is low, high temperature refiring shrinkage is large, heat insulation and moisturizing effect are good. So are high alumina lightweight insulating fire bricks. High alumina lightweight insulation fire bricks are a kind of lightweight insulation refractory with regular shape which have a content of Al2O3 of more than 48%, and is mainly composed of mullite and glass phase or corundum. They are a new type of lightweight refractory fire bricks produced by our company in accordance with market and customer needs.

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Advantages of High Alumina Lightweight Insulating Fire Brick

Compared with traditional lightweight insulating fire bricks, High alumina lightweight insulating fire bricks possess the following characteristics:

Thermal conductivity coefficient is low. Thermal conductivity of high alumina lightweight insulating fire brick is relatively low and thermal insulation performance is good especially in the high temperature state. Good thermal shock resistance. High alumina lightweight insulating fire brick doesn’t deform and peel off in the use temperature range. High aluminum lightweight insulation fire bricks have a higher load softening temperature and a lower refiring linear change, making them have a longer service life and much safer. High alumina insulation fire bricks can choose reasonable mechanical strength so that they can fully exert their superiorities according to the different applications.

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Properties of High Alumina Lightweight Insulating Fire Brick

Good high temperature strength

Bestthermal insulationperformance

Excellent corrosion resistance

Significant energy-saving effect

Excellent thermal shock resistance

Specification of High Alumina Lightweight Insulating Fire Brick

High alumina lightweight insulating fire brick is a new type of lightweight refractory bricks developed by our company according to the market needs. Its physical and chemical index is as below:

Item/Products RS-PD-0.8 RS-PD-1.0 RS-PD-1.2 Al2O3(%) ≤ 60 60 65 Fe2O3(%) ≤ 1.0 1.0 1.0 Bulk Density(g/m3) ≤ 0.8 0.8 1.2 Cold Crushing Strength/MPa ≥ 5.0 5.0 8.0 Refiring Linear Change(℃xh) ≤ 2% 1400*12 1400*12 1400*12 Thermal Conductivity(W/m·k) ≤ 200℃ 0.24 0.28 0.38 400℃ 0.27 0.3 0.4 800℃ 0.32 0.35 0.44 0.1MPa Refractoriness Under Load(℃)≥ 1400℃ 1400℃ 1450℃

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Uses of High Alumina Lightweight Insulating Fire Bricks

High alumina lightweight insulating fire brick is an ideal energy-saving product. It can be widely used in kiln lining and insulation of metallurgy, machinery, ceramics and chemical industries. Nowadays, high alumina insulating fire bricks have reached various technical indicators of similar products in the world, and become a new material that must be selected in the design of industrial furnaces.

What’s more, high alumina insulation fire bricks can be applied in masonry insulation and areas where there is no strong high-temperature molten material to erode and wash. The surface contact temperature of general high alumina insulation fire brick shall not exceed 1350℃ when contact with the flame directly.

Manufacturing Process of High Alumina Lightweight Insulating Fire Bricks

High Alumina Lightweight Insulating Fire Bricks are usually made of high-alumina bauxite clinker with a small amount of clay. After grinding, it is cast in the form of mud by gas or foam method and fired at 1300-1500℃. Some bauxite clinker can also be replaced by industrial alumina once in a while.

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Supplier of High Alumina Lightweight Insulating Fire Bricks

RS Kiln Refractory Company can directly provide all kinds of insulating fire bricks with our customers such as high alumina lightweight insulating fire bricks, mullite insulating fire bricks, lightweight insulating fire bricks and so on. Besides, we have advanced technicians and professional after-sale teams.

RS company’s refractory fire bricks are known for high quality and cheap price. We sincerely hope an opportunity cooperating with you around the world to achieve a win-win. High quality and best price high alumina lightweight insulating fire brick will be your first choice. So please feel free contact us for free quotation.

