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:What are the high aluminum bricks made of?
We specialize in the production of various LeiBao refractory refractory material, such as corundum, zirconia products, alumina hollow ball products, mullite products and so on.
Q:Which is better, the soft core or the hard core?
The wire has two kinds of hard core and soft core, the hard core line is only one wire core, and the soft core line has a plurality of wire cores. For the same sectional area, the 7 core is more than the more than 30 core. There is a difference in use. Generally used for DC is the use of hard core line, because of its small line consumption; and for communication, we should use soft core line, but also in order to reduce its line consumption
Q:Application characteristics of high alumina brick
Slag resistance. Due to the high alumina brick products in the three oxidation of two aluminum is neutral and high content, so this material products for acid-base slag corrosion resistance.
Q:High alumina brick 80 with which high aluminum cement?
In order to maintain a reasonable comprehensive lining, should adopt high quality aluminum refractory mud, such as Sichuan resistance card phosphate refractory mud, refractory clay, high alumina refractory mud PA-80 LN-75, if you use the card volume of Sichuan resistant refractory clay masonry, the effect is better.
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:What are the grades of high alumina bricks?
According to the size of high aluminum brick is divided into: standard brick, special-shaped brick.
Q:What are the common thermal insulation materials for thermal conductivity?
The single organic insulation material should be the best polyurethane in the field. In accordance with the production process can be divided into on-site foam polyurethane and factory prefabricated rigid foam polyurethane board. The scene is polyurethane foam isocyanate and polyol to cool (polyether or polyester) two components as the main raw materials with additives, the on-site spraying construction with thermal insulation and waterproof function of the rigid foam material.
Q:Is glass wool inorganic thermal insulation material?
The characteristics of glass wool, glass wool is the molten glass fibrosis, the formation of cotton like material, chemical composition of glass, is a kind of inorganic fibers. With good forming, small volume density, thermal conductivity, both thermal insulation, sound-absorbing performance, corrosion resistance, chemical stability.
Q:What is the heat preservation material used in a laboratory furnace?
Thermal insulation cotton is a high-purity clay clinker, alumina powder, silica powder, chromium sand and other raw materials in the industrial furnace melting at high temperature, forming fluid. Then, compressed air is used to blow or use the wire throwing machine to turn the yarn into a fiber shape. After the cotton collector is collected, the cotton is formed into a heat preservation cotton.The high alumina brick is usually made of high alumina clinker with small amount of clay. After grinding, the high alumina brick is poured and shaped in the form of slurry by the way of gas generation or foam, and it is burnt at 1300~1500 DEG C. Sometimes industrial alumina can be used instead of some bauxite clinker. Used for lining and insulation of masonry kilns, as well as for areas where there is no strong, high temperature molten material erosion and erosion. When contacting the flame directly, the surface contact temperature shall not be higher than 1350 degrees centigrade.
Q:Can high alumina brick resist carburizing?
Louzhu can use heavy impervious material, it is neither high alumina brick nor mullite, this product can resist seepage and have good compressive strength

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