High strength, low thermal conductivity High Alumina insulation firebrick for Kiln

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China main port
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TT OR LC
Min Order Qty:
1000 pc
Supply Capability:
10000000 pc/month

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Product Description:

Quick Details

Place of Origin:

Henan, China (Mainland)

Shape:

Block

Material:

Alumina Block

SiO2 Content (%):

customized

Al2O3 Content (%):

customized

MgO Content (%):

customized

CaO Content (%):

customized

Refractoriness (Degree):

Common (1580°< Refractoriness< 1770°)

CrO Content (%):

customized

SiC Content (%):

customized

Model Number:

STA-000123

Brand Name:

CNBM

AL2O3%:

48

Fe2O3%:

2.0

Densityg/ cm³ ≤:

1.0/0.9/0.8/0.7/0.6/0.5

Compressive strengthMpa≥:

4.0/3.5/3.0/2.5/2.0/1.5

linear change on reheating:

1400C/1400C/1400C/1350C/1350C/1250C

thermal conductivity350°C±25 °C W/m.k:

0.50/0.35/0.35/0.30/0.25/0.20

Packaging & Delivery

Packaging Details:Polythene-foamed sheet bag and wooden case and wooden pallet or pack as customer's requirements.
Delivery Detail:about 30 days

High strength, low thermal conductivity High Alumina insulation firebrick

 

 

 This product uses high-grade hollow ball and alumina as the main raw materials, made by high temperature sintering. With features of High strength, low thermal conductivity, suitable for 1400°C below’s furnace insulation and lining.  

 

 

Chemical properties

 


Lg-1.0

Lg-0.9

Lg-0.8

Lg0.7

Lg0.6

LG0.5

AL2O3%

48

Fe2O3%

2.0

Densityg/ cm³ 

1.0

0.9

0.8

0.7

0.6

0.5

Compressive strengthMpa≥

 

4.0

3.5

3.0

2.5

2.0

1.5

 linear change on reheating≤2%×2h 

Lab Temperature °C

1400

1400

1400

1350

1350

1250

thermal conductivity350°C±25 °C  W/m.k

0.50

0.35

0.35

0.30

0.25

0.20

High strength, low thermal conductivity High Alumina insulation firebrick for Kiln


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Q:What are the characteristics of high alumina bricks?
The product has the advantages of high temperature, little creep, strong corrosion resistance and good thermal shock resistance, and is suitable for large and medium-sized high-temperature kilns and other energy consuming industries, such as chemical industry, electric power industry, etc.
Q:What is the difference between fireclay bricks and high alumina refractory bricks?
A neutral refractory with an alumina content of more than 48%. Made from alumina or other raw materials of high alumina content; formed and calcined. High thermal stability, fire resistance above 1770. Slag resistance is good, used for masonry steel smelting furnace, glass furnace, cement rotary furnace lining.
Q:In 2016, a few of the traditional refractory materials will be able to survive
From the year 2015 to the year 16 the end of the year, refractories industry presents two kinds of situations: one is a small business, a single product variety and equipment, to meet the demands of both environmental protection and the downstream market, such enterprises are generally in the Qing state inventory;
Q:How to reduce the harm caused by two times mullite in high alumina refractory material
Prolong the sintering time and adjust the aluminum content of the high alumina brick.
Q:How much is one ton / ton of high alumina refractory brick?
The market price of about super high aluminium brick price at 3000 yuan / ton, a high aluminum brick at around 2500 yuan / ton, two high aluminum bricks at around 2100 yuan / ton three grade high alumina bricks at around 1850 yuan / ton for reference, choose to buy the area is not the same as the prices are not the same.
Q:What kinds of minerals are there in the five major categories of ore crystal chemistry?
Sulphide. A total of more than 200~300 kinds, followed by the type of silicate minerals, the weight of 0.25% of the crust. Chang Fu is an important nonferrous metal deposit, which is an important source of copper, lead, zinc, antimony and so on. It is of great economic value. The main features are: metal luster, color, streak is deep, low hardness, good thermal conductivity, than the major. Another feature is that because sulfides are often associated with magma, it is very easy to oxidize under the surface supergene action. Except for pyrite (6 ~ 6.5 hardness), the hardness is very low. Such minerals pyrite, chalcopyrite, galena, FeS2 CuFeS2, PbS, Sb2S3, stibnite sphalerite molybdenite, cinnabar HgS MoS2.
Q:Density of high alumina bricks
Alumina content of 48% or more, mainly from mullite and glass phase or corundum composition of lightweight refractory. The volume density is 0.4 ~ 1.35g/cm3. The porosity is 66% ~ 73%, and the compressive strength is 1 ~ 8MPa. Better thermal shock resistance.
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 are the high temperature refractory mortars made of?
Siliceous mud, mineral composition and chemical composition is similar with silica, excellent corrosion resistance, water glass slurry, drying shrinkage, but also can be used for bonding fiber products, sealing furnace wall.
Q:Use of high alumina refractory bricks?
High alumina brick refractory than clay refractory bricks and brick refractory degree are higher, up to 1750~1790 DEG C, which belongs to high-grade refractory materials.

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