High Alumina Bricks for Blast Furnaces

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Qingdao
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TT OR LC
Min Order Qty:
4 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

High Alumina Bricks for Blast Furnaces  

Composite of High Alumina Bricks for Blast Furnaces

High Alumina Bricks are classified according to alumina content ranging from 48% to 90%.

 

Main Features of High Alumina Bricks for Blast Furnaces 

Low thermal conductivity   

Excellent acid and base slagging resistance

Excellent thermal shock resistance    

Excellent mechanical strength

Acid and alkali resistant

High tensile strength

Resilient to thermal shock

Corrosion resistance

Wear and erosion resistant

 

Application of High Alumina Bricks for Blast Furnaces 

commonly used in blast furnace, hot blast furnace, the roof of electric furnace, teeming ladle, rotary kiln, regenerator, etc

 

High Alumina Bricks for Blast Furnaces Images

 High Alumina Bricks for Blast Furnaces

Specification of High Alumina Bricks for Blast Furnaces

HIGH ALUMINA BRICK---ALP85

Apparent Porosity (%)

 ≤18

Bulk Density (g/cm3)

 ≥2.85

Cold Crushing Strength (Mpa)

≥80

Modulus Of Rupture (Mpa)

 ≥20

Refractoriness Under Load (0.2 Mpa)(℃)

1450

Permanent Linear Change (%)

1500℃×3h -0.5 ~+0.5

Chemical Composition (%)

 

Al2O3

≥82

Fe2O3

≤1.5

P2O5

≤3

 

FAQ of High Alumina Bricks for Blast Furnaces 

Q1:Are you a manufacture or trader?

A:Factory+trade(mainly factories, at the same time, we operates other related products).

Q2:Can we visit your factory?

A:Sure,welcome at any time, seeing is believing.

Q3:What's the MOQ of trial order?

A:No limit, We can offer the best suggestions and solutions according to your condition.

Q4:Which payment terms can you accept?

A:T/T,L/C are available for us.

Q5:After an order is confirmed, when to deliver?

A:15-25days after deposit.

Q6:Is your company accept customization?

A:We have own factory and excellent technical team, and we accept OEM service.

Q7:How about your company's certification?

A:ISO9001 and Test Report, also we could apply other necessary certification.

Q8:How to solve the quality problems?

A:If the products are not confirmed to customer samples or have quality problems, our company will be responsible to make compensation for it.

 Q9:Can you offers samples?

A:Of course, samples are free but freight paid by the buyers.

Q10:What is the service life of your bricks?

A:The service life of different bricks is unlike. It also depends on your using condition and method.

 

 

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Q:What are the requirements for refractory materials in heat treatment furnace?
Refractoriness is the property of a refractory against high temperature, which means the temperature at which a refractory is softened to some extent after heating, but not its melting point. According to the degree of refractory, refractory materials can be divided into: General refractories, refractory degree is 1580 to 1770 DEG C; advanced refractories, refractory degree is 1770 to 2000 DEG C; special refractory material, refractory degree is greater than 2000 DEG C.
Q:How to test the aluminium bricks of high alumina refractory bricks?
Before making bricks, the raw materials are usually tested and tested to see if the aluminum content is up to standard
Q:Aluminum content 38. silicon content 55 What refractory bricks?
High alumina brick:The mineral composition of the high alumina brick is determined by the bauxite used. The mineral composition of the clinker is usually mullite, corundum and glass. The theoretical composition of mullite is Al2O371.8%, SiO2 28.2%, and its melting decomposition temperature is 1840 DEG C. With acicular crystal, network cross structure, high temperature state showed better strength. Corundum in the form of alpha -Al2O3, melting point of 2050 degrees, hardness of Mohs 9, showing a granular and columnar crystal, has good chemical stability, acid, alkaline slag have a certain resistance. Based on the composition of mullite minerals, the phase composition of high alumina brick can be judged according to the content of Al2O3. When the bricks are below Al2O3 71.8%, the base of the composition is mullite and SiO2, such as grade LZ-48 bricks. Because it contains a large number of SiO2 formed in the liquid phase under high temperature is 20% ~ 30%; brick in Al2O3 more than 71.8%, the excess Al2O3 formed corundum crystal under high temperature, while generating 2 high temperature phase, eutectic temperature rise by the low content of Al2O3 brick 1595 C to 1840 C, such as grade LZ-75 brick. In fact, it is impossible to produce a complete phase equilibrium in the process of production, but the glass phase is very small, and there is no more than 10% in the partial gap of the Yu Jing phase
Q:What causes breakage of refractory bricks?
There are many factors that lead to the damage of refractory brick, can be divided into: the chemical loss (e.g. salt penetration, redox phenomenon), heat loss (burning, thermal shock), mechanical loss (kiln deformation, thrust, brick masonry quality etc.).
Q:What is the price of the first grade high alumina brick?
Many factories in Xinmi have high alumina bricks, but they must choose a regular factory. Kuwait refractory level high aluminum brick price at around 1600, the quality of double stable supply
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:Can high alumina brick resist carburizing?
It is heavy brick mullite brick, brick to do the heavy weight to more than 2.4 manufacturers can achieve a few feeling
Q:What should be used as binder for making high alumina bricks?
In addition, high alumina micro powder can be used as binding agent, or high alumina micro powder and clay powder are prepared according to a certain proportion, and synthetic mullite is used as bonding agent. With these binders, high alumina bricks without two expansion can be prepared.
Q:How many cubic bricks does a high alumina brick have?
It is related to the content of aluminum in high alumina bricks.
Q:What are the categories of bricks?
In a proper ratio of lime sand brick and quartz sand, sand or fine sand, the ground, Kazumi Wa, semi dry pressing and autoclaved curing and. The fly ash brick is made of fly ash as main raw material and mixed with cement material such as coal gangue, stone powder or clay. It is made up of batching, molding, drying and roasting. It can make full use of industrial waste residue and save fuel.

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