High Alumina refractory fire bricks for kilns

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China main port
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Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Product Description:


High Alumina refractory firebricks for furnaces and Kilns


furnaces and Kilns




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  



Spalling Resistant High Alumina Bricks







Bulk Density



Apparent Porosity



Refractoriness under Load(0.2MPa)


Cold Crushing Strength



Thermal Shock(1100℃,water cooling)



Apperance Control



Sampling Size




Visual Check


Crack Width<0.5mm< span="">

Crack length<20mm< span="">

2,Chip,Lost corner



Visual Check


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


Visual Check


No Lamination


Visual Check


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




Visual Check


No Fin

Size &Dimension


ASTM  C134

Follow ISO5022

Conform to drawing



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




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


ASTM  C134

Follow ISO5022

Drawing ±1mm


ASTM  C134

Follow ISO5022

<< span="">1.5mm

High Alumina refractory fire bricks for kilns

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Q:Is glass wool inorganic thermal insulation material?
The use of glass wool, glass wool is usually used as raw materials of various types of insulation materials, such as glass wool board, glass wool, glass wool, glass wool pipe, can be used in the following areas:1) roof insulation, cold protection, sound-absorbing materials; 2) building exterior wall insulation and cold protection; 3) entertainment places, theaters, television stations, radio stations, laboratories, sound absorption treatment.
Q:How much is the bending temperature aluminum silicon carbide brick for torpedo car
High alumina brick is made of superfine alumina, fused corundum and fused mullite as main refractory materials.
Q:How to reduce porosity of high alumina brick
In order to reduce the porosity of high alumina brick, the corresponding measures should be taken from the selection of raw materials, batching, mixing, molding and firing.
Q:What are the main components of high alumina bricks?
High alumina brick materials according to the main mineral phase can be divided into: aluminum silicate minerals, such as sillimanite, kyanite, andalusite, and synthetic mullite.
Q:What is the apparent porosity of high alumina brick?
Total porosity is porosity refers to the total volume of sample porosity in the percentage of total volume of samples. Apparent porosity refers to the percentage of the total volume of openings, pores, and total specimens in the sample.
Q:High alumina brick 80 with which high aluminum cement?
Which kind should be chosen should be determined according to the conditions of use, life expectancy and cost control. By the way, the quality of masonry is also very influential.
Q:What kinds of minerals are there in the five major categories of ore crystal chemistry?
Natural element minerals. Of minerals produced by an element (elementary substance). There are about 90 natural elements in the earth's crust, accounting for 0.1% of the total weight of the earth's crust. Can be divided into metal elements, mainly platinum and copper, silver, gold, etc., non-metallic elements, carbon, sulfur, etc., half metallic elements, arsenic, bismuth and so on.
Q:What should be used as binder for making high alumina bricks?
Bond for making high alumina brick: soft clay has good plasticity, so the high alumina brick is usually made of soft clay as bond. However, the free Al2O3 free SiO2 and bauxite clinker clay in under 1200 degrees occurred two times of Mullization reaction, generate large volume expansion, silicon porosity, strength reduction. Therefore, the amount of clay powder in the ingredient should be no more than 5%.
Q:What is the price of the latest thermal insulation material?
There are many kinds of insulation materials, and the price will fluctuate with the market. Small quantities of inquiry or procurement, then go directly to the local thermal insulation market, a wide variety of prices are basically the market price.
Q:What are the requirements for Rubble backfill height?
Backfill should be filled with large stones, big face, small face upward, the decoration is stable, and then use small stones leveling, the gap between the stones can be swept into the slag, gravel, so that the gap filled.

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