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High alumina light weight thermal insulating brick

 
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Description

Light weight high alumina brick is an ideal insulating refractory refractory material, with advantages of high strength, low thermal conductivity, good insulation property and low price. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.
Light weight high alumina brick is also called high alumina insulating brick. It contains more than 48% Ai2O3 and mainly consists of mullite and glass phase or corundum. It is usually made of high bauxite and a small amount of clay. After the raw materials are grounded, it is made into mud. Then it is cast and molded and fired at 1300~1500℃. Sometimes industrial alumimum is used to replace bauxite. Inorganic matter is added as ignition loss substance in order to increase the porosity of the refractory.

Feature Of High alumina insulating brick : 
1. It has advantages with small bulk density, high cold crushing strength, and high refractoriness under load, small dimension tolerance and good thermal shock resistance.
2. It has the lowest and most stable thermal conductivity in various insulating refractory bricks.
3. It can reduce the total weight of furnace body and the thickness of furnace wall effectively, improve heat efficiency, lower energy consumption, improve work conditions and production efficiency, and considerable economic benefit can be obtained.

Production Process of High alumina insulating brick:

High alumina insulating brick:Crushing→Mixing→Shaping→Drying→Firing→Inspection→Packaging and Shipment

Light weight high alumina brick has such advantages as high porosity, good insulation effect, high mechanical intensity, low thermal refractory fiber board conductivity and long service life. It has high cold crushing strengh,size precision and holds the most stable and lowest thermal conductivity of all insulating refractory brick at present. Its maximum insulating castable service temperature is 1350℃. Thermal efficiency and working condition can be improved, energy consumption can be lowered, productivity and significant economic results can be achieved.
Light weight high alumina brick is characterized by low bulk density. The total weight of the furnace body and walls thickness can be reduced effectively.
It has found a wide application in ceramics tunnel kiln, roller kiln, shuttle kiln, coking furnaces of iron and steel industry and other thermal equipment. It is mainly used in lining and insulating layer of areas without strong erosion by high temperature melts. When in direct contact with flame, the surface contact temperature can not be higher than 1350℃.

Technical Data

 

Physical and Chemical Indexes of High alumina insulating brick   

Item

LG-1.2

LG-1.0

LG-0.9

LG-0.8

LG-0.7

LG-0.6

LG-0.5

LG-0.4

Al2O3 % ≥

48

Fe2O3 % ≤

2.0

Bulk density g/cm

1.2

1.0

0.9

0.8

0.7

0.6

0.5

0.4

Cold crushing strength Mpa ≥

4.5

4.0

3.5

3.0

2.5

2.0

1.5

0.8

Permanent linear change temp ≥,less than 2%

1400

1400

1400

1400

1350

1350

1250

1250

Thermal conductivity

W/m.k 350±25

≤0.55

≤0.50

≤0.45

≤0.35

≤0.35

≤0.30

≤0.25

≤0.20

The technical data pertains to machine pressed standard bricks in compliance with the testing standard. These data are typical approximate guide value. Not to be construed as a binding specification.
Size tolerance ±1.% or 1.5mm whichever is greater.
High alumina insulating brick with properties of higher values available where applications require the same.
Shapes&Size

   What is the Shapes &Sizes of our High alumina insulating brick ?

Straight
Split

Arch

Wedge

Tile

Other Shape
L×W×H(mm)
230×114×65
230×114×75


L×W×H (mm)
230×114×25
230×114×32
230×114×37
230×114×50



L×W×H/h(mm)
230×114×65/45
230×114×65/55
230×114×75/45
230×114×75/55
230×114×75/65



L×W×H/h (mm)
230×114×65/45
230×114×65/55
220×114×75/45
220×114×75/55
220×114×75/65



L×W×H (mm)
230×230×38
230×230×50
230×230×65
230×230×75
 



Key brick,
Skew brick,
Soap,
Checker,
Neck,
Taper,

We also can make high alumina insulating brick according to customers' drawing and requirements.
Applications

Applications of High alumina insulating brick
Light Weight High Alumina Insulating Brick is not only widely used in insulating layers of various of thermal processing equipments, such as hot blast furnace, coke oven, glass kiln, etc, but also apply to linings in parts of furnace without strong high-temperature molten material erosive.


Production Equipment

Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.

Testing Testing Testing Testing
Packing Details
Packing details:

★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.

★Wooden pallet size: usually 92*92cm (standard brick)

★Castable: Ton bag with rain film and 25kg bags inside

★Or according to customer’s requirements

PackingPackingPackingPacking
Transportation

★Port of dispatch: Tianjin port; Qingdao port

★Delivery time: According to customer’s demand or two sides negotiate

TransportationTransportationTransportationTransportation
Our Services

We provide you 

★Timely response: Timely response to your inquiry within 24 hours and provide solution. 

★Competitive Price: Make the products competitive in your market. 

★Free sample: Free sample are offered, trial order are accepted for quality evaluation. 

★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.

★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment. 

★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.

We are here for you!

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Certification:  (ISO 9001:2015)

JUNDAO (HENAN) NEW MATERIALS CO.,LTD.

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