high alumina insulating fire brick for boiler/furnace

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

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Product Description:

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

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Q:What is the difference between fireclay bricks and high alumina refractory bricks?
High R.U.L, low creep high alumina brick [1] is using high grade bauxite, fused corundum, fused mullite as main raw material of high-grade refractory materials. 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 hot blast stoves.
Q:The difference between light high alumina brick and heavy aluminum brick
Lightweight high alumina brick, also called high alumina insulation brick. Alumina content of 48% or more, mainly from mullite and glass phase or corundum composition of lightweight refractory. Volume density 0.4 - 1.35g/cm3. Porosity 66% - 73%, compressive strength 1 - 8MPa. Better thermal shock resistance. Usually, a high alumina clinker is added with a small amount of clay. After grinding, it is poured and shaped in the form of slurry by gas generation or foam method, and it is fired 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:What are the grades of high alumina bricks?
High alumina brick according to the aluminum content is generally divided into: super high alumina brick, a high aluminum brick, two high alumina brick, three high alumina brick
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 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:Difference between low creep high alumina brick and ordinary high alumina brick
The question is good, these two belong to the high aluminum brick products, when many manufacturers buy, I do not know how to distinguish.
Q:Does the chimney have high acid resistance?
The acid resistant bricks used for chimney are usually made of custom-made trapezoidal acid proof bricks, and the physical and chemical indexes of acid resistant bricks need to be confirmed according to the chimney's actual emission. At this point, you can consult our kerei refractories.
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:What are the categories of bricks?
Ordinary brick size of 240 mm * 115 mm * 53 mm, according to compressive strength (Newton / square millimeter, N / mm2) size is divided into MU30, MU25, MU20, MU15, MU10, MU7.5, these intensity levels.
Q:What is the difference between high alumina brick and clay brick?
Light clay brick, refractory material is a kind of high porosity, low density, low thermal conductivity of refractory material, refractory materials called lightweight refractories, it includes insulating refractory products, refractory fiber and refractory fiber products. Heat insulation refractory material is characterized by high porosity, general 40%-85%, low volume density, lower than 1.5g/cm3, low thermal conductivity, generally lower than 1.0W (m.K). The utility model has the function of heat insulation of an industrial furnace, and can reduce the heat dissipation loss of the kiln, save energy, and can reduce the quality of the thermal engineering equipment. The mechanical strength, wear resistance and slag resistance of insulating refractory material are poor, and it is not suitable for the load-bearing structure of kiln and direct contact with slag, burden, molten metal and other parts.

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