High Alumina refractory fire bricks for kilns

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Product Description:

Products

High Alumina refractory firebricks for furnaces and Kilns

Applications

furnaces and Kilns

 

 

Features

1,Good performance of anti alkali erosion resulted from raw material and fuel

2,Good thermal shock resistance

3,High mechanical resistance

4,Low porosity

5,low thermal conductivity

Technical Data  

Index

Products

Spalling Resistant High Alumina Bricks

Al2O3

%

≥70

Fe2o3

%

/

Bulk Density

g/cm3

≥2.5

Apparent Porosity

%

≥23

Refractoriness under Load(0.2MPa)

≥1470

Cold Crushing Strength

Mpa

≥70

Thermal Shock(1100℃,water cooling)

times

≥25

Apperance Control

Item

Method

Sampling Size

Specification

1,Crack

 

Visual Check

100%

Crack Width<0.5mm< span="">

Crack length<20mm< span="">

2,Chip,Lost corner

 

 

Visual Check

100%

A+B+C<30mm< span="">

3,Lamination

Visual Check

100%

No Lamination

4,Spot 

Visual Check

100%

A+B<10mm< span="">

Or

<3spot/piece

5,Fin

Visual Check

100%

No Fin

Size &Dimension




1,Shape 

ASTM  C134

Follow ISO5022

Conform to drawing

2,Dimension

 

ASTM  C134

Follow ISO5022

As size tolerance in drawing 

For General Brick

<< span="">100mm drawing±1.5mm

>100mm  drawing±1.5%

For Sk38 Brick

All side:drawing ±1mm

For Rotary Kiln Brick

L,a,b:drawing±1.0mm

H:drawing±2.0mm

3,Squareness

ASTM  C134

Follow ISO5022

<< span="">100mm drawing±1.0mm

>100mm  drawing±1.0%

4, Warpage 

ASTM  C134

Follow ISO5022

For General Brick

<< span="">0.4%from diagonal line

For Basic Brick used in Rotary Kiln

<< span="">0.2%from diagonal line

5,Slope

ASTM  C134

Follow ISO5022

Drawing ±1mm

6,Taper

ASTM  C134

Follow ISO5022

<< span="">1.5mm

High Alumina refractory fire bricks for kilns


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Q:The difference between light high alumina brick and heavy aluminum brick
Lightweight high alumina bricks, commonly called insulating refractory bricks, also known as insulating refractory bricks. First of all, literally, lightweight aluminum bricks and heavy aluminum bricks are very different in weight. Lightweight high alumina bricks, also called insulated high alumina bricks, are designed for insulation and heat preservation. In normal use, the utility model is not directly contacted with the furnace temperature, and is a refractory brick product which is close to the furnace wall and has the function of heat insulation and heat preservation.
Q:What are the grades of high alumina bricks?
High alumina brick according to the aluminum content is generally divided into: super high alumina brick, a high aluminum brick, two high alumina brick, three high alumina brick
Q:What kind of material is the general metal case?
Generally speaking, the outer surface of the case is usually made of a steel plate of more than 1 millimeters. The thickness and the material of the steel plate are directly related to the rigidity of the case, as well as the capability of sound insulation and anti electromagnetic radiation. The regular manufacturers of the chassis plate thickness not less than 1.3mm, but there are also some small manufacturers with a thickness of only about 1mm steel, we do not need the ruler to the amount, as long as you put him up, the more weight in the same volume of the chassis is better, in addition, we can also use the finger bomb case shell. If you can hear the crisp percussion sound proof of the casing plate is thin and brittle, if you hear is relatively dull and heavy sound that the chassis material must be good, good general steel plate coated with a layer of thin zinc (bright part), so it can withstand high strength, impact resistance, hardness high elasticity. The frame parts of the chassis are made of high quality materials with high hardness. They are bent into angle shapes or strip shapes. We can shake the chassis frame of the case by hand. Good chassis should be relatively stable, and inferior chassis light is easy to shake. When choosing, we should also pay attention to the outer edge of the case and the edge of the inner bracket. Whether the incision is smooth or not, a good case will not appear in the case of rough edges, sharp edges, burrs and so on. While the poor case appears above phenomenon, often appear when installing the blood splattered". Generally speaking, the chassis must go through the corresponding grinding process before leaving the factory. The edge of the flat plate some burr, edges and corners are rounded, the corresponding fold some corner. When you install such a case, you don't worry about cuts, and some rough, poorly built cabinets tend to scratch your hands.
Q:What's the difference between high alumina refractory bricks and high alumina refractory bricks?
The chemical pH value of high alumina refractory brick belongs to neutral and alkaline refractory brick, and clay refractory brick belongs to neutral and acid refractory brick.
Q:What is the density of a super high alumina brick and what is the price?
Super high alumina brick, alumina content of 80% bricks, bulk density of 2.7g/cm3 or more, the factory price of about 1900 yuan
Q:Which is faster for heat transfer between corundum bricks or high alumina bricks?
There must be a difference. They vary in color from the amount of aluminum, the weight, the temperature, and the color.
Q:The difference between ordinary and diatomite brick refractory brick
To say the difference, the material is the biggest difference. There are diatomite brick density, compressive strength of small brick kiln belongs to the outer thermal insulation, and heavy refractory brick kilns for multi village in direct contact with the flame, high temperature resistance, good compressive strength, but no insulation. Hope to help you.
Q:Which thermal shock stability of clay brick and high alumina brick is good?
Generally, the thermal shock resistance of high alumina brick products is worse than that of clay brick products
Q:Can high alumina brick resist carburizing?
The resistance to carburization is not directly related to the bulk density of bricks
Q:What are the lining structures of lime rotary kilns and what are the requirements for refractories?
The physical and chemical properties of refractory materials used in rotary kiln are as follows: physical and chemical properties of refractory materials used in rotary kilnMaterial name: high temperature compressive strength (MPa), softening temperature (DEG C), thermal shock resistance (1100 DEG C, cold water), sub volume density (g/cm3)Magnesia spinel brick is greater than or equal to 50 is greater than or equal to 1700 = 12 = 2.95High alumina brick is greater than or equal to 75 = 1520 = 8 = 2.57High aluminum bricks more than 50 = 1700 = 12 = 1The clay brick is greater than or equal to 30 = 1400 = 12 = 2.30

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