• high alumina insulating fire brick for boiler/furnace System 1
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high alumina insulating fire brick for boiler/furnace

high alumina insulating fire brick for boiler/furnace

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
10 m.t.
Supply Capability:
100000 m.t./month

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Quick Details

Place of Origin:

Henan, China (Mainland)

Shape:

Brick

Material:

Mullite

SiO2 Content (%):

0

Al2O3 Content (%):

52-72%

MgO Content (%):

0

CaO Content (%):

0

Refractoriness (Degree):

1770°< Refractoriness< 2000°

CrO Content (%):

0

SiC Content (%):

0

Brand Name:

Lite

Size:

230*114*65mm

Fe2O3 /%:

0.8-1.0

Bulk Density g/cm3:

1.0~1.2

Cold crushing strength/ Mpa:

2.5~5.0

Reheating Linear Change(%)°C X 12H:

≤1 (1350℃-1650°C)

Thermal Conductivity(W/m.k)(350°C):

0.32-0.44

Weight of brick:

1.0-2.0kg

Working temperature:

less than 1600°C

Sample:

free

Packaging & Delivery

Packaging Details:1.On wooden pallets with plastic cover 2.According to customer's demands
Delivery Detail:Within 30 days

Brick Shape and Mullite Material high temperature light weight high alumina insulating fire brick for boiler/furnace

Product Description

1.Description

High alumina insulating fire brick, using high pure mullite as raw material, is made by adding alumina powder according to different type and then sintering in high temperature. The Al2O3 content is 50-85%.

2.Feature

1.Low levels of iron and other impurities

2.High mechanical intensity

3.High refractoriness, can contact with the flame directly, suitable for various atmosphere

4.High porosity, low volume density, low thermal conductivity

5.Good heat insulating performance and energy-efficient

6.Low creep rare at high temperature,good thermal shock stability

7.Chemical corrosion resistance

8.Long service life

3.Technical Data

Item

High alumina insulating fire brick

1.0

1.0

1.0

1.0

1.2

1.2

Al2O3/%

≥52

≥55

≥60

≥65

≥65

≥72

Fe2O3/%

≤1.0

≤0.8

≤0.8

≤0.8

≤0.8

≤0.8

Bulk Density(g/cm3)

≤1.0

≤1.0

≤1.0

≤1.0

≤1.2

≤1.2

Cold   Crushing Strength Mpa

≥3.5

≥3.5

≥4.0

≥3.0

≥5.0

≥2.5

Reheating Linear Change (%)°C X 12H

1350℃

≤1

1400℃

≤1

1500℃

≤1

1550℃

≤1

1550℃

≤1

1650℃

≤1

Thermal Conductivity(W/m.k)(350°C)

 

0.33

 

0.33

 

0.33

 

0.32

 

0.35

 

0.44

4.Application

High alumina insulating fire brick can be in direct contact with the flame,this insulating brick can be used as linings or as thermal preservation layers in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry, machinery industry, such as blast furnace, hot blast stoves ,electric arc furnace, cement kiln,melting furnace, ignition furnace, flue, refining equipment, heating equipment and piping, regeneration device, gas furnace, soaking furnace, annealing furnace, heat reaction chamber and other thermal industrial equipment.

 

high alumina insulating fire brick for boiler/furnace

high alumina insulating fire brick for boiler/furnace

high alumina insulating fire brick for boiler/furnace

high alumina insulating fire brick for boiler/furnace

Q:What is the difference between corundum and high alumina??
The main component of high purity 99 corundum brick is corundum sand,90 corundum brick is mainly composed of corundum sand and a small amount of Suzhou soil, mullite.
Q:What are the characteristics of high alumina 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.
Q:What is spalling resistant high alumina brick?
Spalling resistant high alumina brick is a kind of high alumina brick. Antistripping high alumina brick with high grade bauxite and containing Zr02 synthesis as raw material, according to a certain proportion by high pressure molding system in sintering products, products with anti stripping ability, and have the anti erosion potassium, sodium, sulfur, chlorine and alkali salt, low thermal conductivity and other properties that is the transition zone of cement kiln and decomposition of ideal material with remarkable characteristics, the product is good thermal shock resistance, strong ability to adapt to the environment. It is used in the preheating or decomposing furnace, grate cooler and so on.
Q:What are the reasons for the decline in the performance of high alumina bricks when we use high alumina refractory bricks?
All the raw materials adding order, mixing time, material and material moisture trapped. 4, the pressure and the volume density of Pei brick and brick Pei size etc..
Q:Use of high alumina refractory bricks?
Because of the high Al2O3 high aluminum products, low impurity content, the formation of fusible vitreous body less so than the clay brick high load softening temperature, but because mullite crystallization has not formed the network organization, so the load softening temperature is not high silica brick.
Q:How to reduce the harm caused by two times mullite in high alumina refractory material
Two times mullite refers to the content of aluminum is about 70%, in high temperature sintering, the expansion coefficient is large, the thermal expansion rate is high.
Q:Is there a big difference between two high alumina brick and one high alumina brick?
The difference between the two kinds of high alumina bricks is great. I perennial in Zhengzhou was responsible for the production and sale of colt refractories
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 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 price of the latest thermal insulation material?
Also through online pre understand the products and prices, and now have large-scale manufacturers are generally opened on the cable business. Goods than three, manufacturers on-site inspection, confirm the quality of goods after considering cooperation.

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