Hitech 1760C 42% Al2O3 refractory firebrick for kilns

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Product Description:

Quick Details

Place of Origin:

Shandong, China (Mainland)

Shape:

Brick

Material:

Alumina Block

SiO2 Content (%):

≤53

Al2O3 Content (%):

>42%

MgO Content (%):

none

CaO Content (%):

none

Refractoriness (Degree):

Common (1580°< Refractoriness< 1770°)

CrO Content (%):

none

SiC Content (%):

none

Model Number:

JN

Brand Name:

CNBM

Fe2O3:

≤2.4%

Refractoriness ℃:

1760

Bulk density g/cm3:

≥2.1

Apparent porosity %:

≤23

Cold crushing strength MPa:

≥30

Refractoriness under load ℃:

≥1380

Packaging & Delivery

Packaging Details:in wooden pallets
Delivery Detail:25 days

Features

  • 1. Low bulk density, low thermal conductivity, good thermal insulation performance.

  • 2. Refractory category allow direct contact of fire, suitable ofr various atmosphere

  • 3. Good integrity with furnace lining, long service life, easy operation, could be shaped    freely

Typical Applications

  • 1. Furnaces of metallurgy industry, heat treatment furnace

  • 2. Furnaces of chemical industry and construction industry.

  • 3. Furnace of incineration of garbage, recirculating fluidized bed furnace etc.

Specification:

                                                                      Refractory fireclay brick

 

Item Specifications

N-1

JN-40

JN-42

Al2O3  %

≥42

≥40

≥42

Fe2O3  %

≤2.3

≤2.7

≤2.5

Refractoriness ℃

1760

1760

1760

Apparent porosity  %

≤22

≤24

≤23

Bulk Density≥ g/cm3

2.25

2.20

2.25

Refractoriness under load 0.2MPa

1400

1380

1450

Cold crushing strength  MPa

35

28

35

Permanent linear chang %

1500℃×2h

+0.1~-0.4

+0.1~-0.4

+0.1~-0.4

Hitech 1760C 42% Al2O3 refractory firebrick for kilns


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Q:What are the high aluminum bricks made of?
It's OK to use corundum bricks and alumina hollow ball bricks to build a furnace,
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:Refractory brick, high alumina brick, magnesia chrome brick or magnesia brick, clay brick, which type of high temperature refractory brick?
High alumina brick clay brick up to 1700 degrees above 1500 degrees -1750 degrees of magnesia brick and magnesia chrome brick 1500-1650 degrees, I is the production of clay brick, brick my temperature at 1500-1700 degrees. Specific depends on what kiln, brick is only part of it
Q:What refractory material does cupola lining use?
A class of inorganic nonmetallic materials with a refractoriness of not less than 1580 degrees. Refractoriness is defined as the temperature of a sample of a refractory cone sample that resists high temperature without loading and does not soften and melt down. But only in terms of fire resistance can not be fully described refractories, 1580 degrees of temperature is not absolute.
Q:How much is one ton of high alumina refractory brick?
High alumina refractory brick according to the different content of AL2O3 is divided into grade, grade one and grade two, and grade three high aluminum brick, Zhengzhou Kang Hui refractories factory price in 800-1900 yuan / ton, stable quality, are exported to the domestic and foreign markets.
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 requirements for refractory materials in heat treatment furnace?
Fire resistance is an important performance index of refractory materials, but it does not represent the highest temperature in actual use of refractory materials. In actual use, refractories also bear certain pressure, therefore, must consider the high strength at high temperature refractory material, which is in high temperature under certain pressure without deformation, such as the NZ-40 refractory refractory degree up to 1730 DEG C, but the maximum temperature is only 1350 degrees celsius.
Q:Which thermal shock stability of clay brick and high alumina brick is good?
Generally, the thermal shock resistance of high alumina brick products is worse than that of clay brick products
Q:Corundum, high alumina and fireclay refractory difference is what
Corundum is unknown. The high alumina brick has higher aluminum content than the clay brick, and the temperature resistance is higher than 300 degrees. It is more durable and durable than the clay brick. The production process of high alumina brick is better than that of clay brick. For example, the weight of good clay brick is 3.7kg, and that of high alumina is 4.2kg. Good density. But the price of high aluminum is too high: ordinary clay brick (standard brick example) in 1.1--2.5 yuan / block, high aluminum to 4.5 yuan / block, or even more expensive. The extra high aluminum has reached 5000 tons. Say straight white point is: under the same conditions, clay brick for a period of one year, then the high aluminum for more than three years.
Q:What are the lining structures of lime rotary kilns and what are the requirements for refractories?
The current configuration of domestic calcining active lime rotary kiln refractories are as follows: the discharge end of low cement high alumina castable with 3% steel fiber; the cooling zone and the firing zone: dry magnesia spinel brick with high aluminum brick with high temperature; preheating: high alumina brick; low temperature preheating zone: clay brick light clay brick; feeding end: low cement high alumina castable with 3% steel fiber; in addition, brick size also have the corresponding requirements; dimensional tolerances: dimensional tolerances used in different parts of the requirements are not the same, the general control in 2mm; corner damage: general permit edge damage 40mm and 5mm deep within angle loss in the hot and cold surface is allowed to have only one, three edges and the length of not more than 50mm; there are cracks parallel to the use of surface crack is not allowed, cracks of brick surface are allowed.

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