calcined bauxite for refractory bricks

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25 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Quick Details

Place of Origin:

Shanghai, China (Mainland)

Shape:

Brick

Material:

Alumina Block

SiO2 Content (%):

3~9%

Al2O3 Content (%):

3~25%

MgO Content (%):

40~60%

CaO Content (%):

2%

Refractoriness (Degree):

1770°< Refractoriness< 2000°

CrO Content (%):

8~20%

SiC Content (%):

none

Model Number:

KS1323

Brand Name:

cnbm

Packaging & Delivery

Packaging Details:carton
Delivery Detail:3~5days

Specifications

calcined bauxite for refractory bricks 
Refractory Bricks magnesia chrome bricks are mainly made from sintered

calcined bauxite for refractory bricks

Specifications

Refractory Bricks magnesia chrome bricks are mainly made from sintered magnesia and chrome-oxide after high pressure shaped

Refractory Bricks magnesia chrome bricks are mainly made from sintered magnesia and chrome-oxide, by high pressure shaping and high temperature firing. According to different requirements, the contents of the Cr2O3 can be changed.

 

item\index

MGe-8

MGe-12

MGe-16

MGe-20

MgO,% ≥

60

55

45

40

Cr2O3,% ≥

8

12

16

20

Apparent porosity % ≤

21

21

23

23

Cold crushing strength,MPa ≥

30

30

30

30

0.2MPa the load softens the beginning temperatur/°C ≥

1530

1550

1550

1550

Heat shock resistance(950°C air cooling),each ≥

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calcined bauxite for  refractory  bricks


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Q:who knows the fire resistant levels of fireproofing glass?
According to the fire resistance levels, it can be divided into three categories: Class A: a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. Including composite flameproof glass and perfusion type fireproofing glass . This kind of glass has the properiyies of transmittance, fireproofing ( smoke insulation, fireproofing, and keeping out thermal radiation), sound insulation, shock resistance, and it's suitable for steel and wooden fire door of building decoration, windows, varnishing, partition walldaylighting roof,ceiling screen,perspective floor and other construction components demading for transparency and fireproofing. Class B: Marine fireproofing glass, including porthole fireproofing glass and rectangular window fireproofing glass, surface glass pane is tempered safety glass, the inner surface glass pane material can be arbitrary selection. Class C: it's a kind of monolithic fireproofing glass that only satisfies the requirements of refractory integrity. This kind of glass has characteristics of transmittance, fireproofing, smoke insulation and high strength,etc. It's suitable for fireproofing glass partition wall, fire Windows, outside curtain wall and other places without insulation requirements.
Q:Does anyone know the fire endurance of steel stud partition?
The fire endurance degree is 1 hour. which is in line with the national building material fireproofing test standards. CaSo4.2H2O is molecular gypsum molecular structure formula, containing 20% ​​water, crystal water and free water, when putting on fire, 10% of the surface water will slowly evaporate, remaining10% of crystal water. It is a class A fire retardant material itself. The longest time can be 4 hours.
Q:What brands are the best in the A-level refractory materials?
A-level refractory materials: Dulux, Nippon, Carpoly, Skshu and Smoz. Fireproof boards are the most common materials in the market. There are two are commonly used: one is HPL decorative plastic laminates with advantages of fire- ,moisture-, wearproof and oil resistance as well as easy to wash, besides it has a great variety of colors and types. Another one is glass fiber magnesite fireproof board, the out layer of which is decorative materials while the inner layer is mineral magnesium fireproof materials which can resist a high temperature of 1,500 Celsius degree but it is not a good ornament.
Q:What is the magnesium carbon refractory?
The composition of refractory brick There are many types of raw materials of refractory brick, mainly divided into six categories: Soil, stone, sand, mineral, power and others. The first kind of raw material, soil: Aluminum soil, kaolin, clay, diatomaceous earth The second kind of raw material, Stone: Fluorite, kyanite, andalusite, forsterite, vermiculite, mullite, pyrophyllite, chlorite, dolomite, sillimanite, magnesia-alumina spinel, silica The third kind of raw material, sand: Pottery, zircon sand, quartz sand, magnesite The fourth kind of raw material, ore: Chrome ore The fifth kind of raw material, powder: Aluminum powder, silica powder, silicon powder The sixth kind of raw material of refractory brick, others: Asphalt, graphite, phenolic resins, perlite, cenosphere, sialon, corundum, silicon sulfate, silicon carbide, sodium silicate, silica solution, boron carbide, calcium aluminate cement, nitride material, shale ceramisite, alumina, alumina sol and zirconia, etc.
Q:Is fireclay poisonous?
Refractory materials are typically oxides, alumina, magnesium oxide and aluminate cement and etc, which are non-toxic.
Q:Which brand of thermal insulating refractory is good?
The most famous is the dragon, Morgan, Luyang, which are good at making ordinary thermal insulation materials and whose products are cheap but quality. Guangdong ALISON nanometer aerogel is more expensive. The heat conductivity coefficient is 0.018. It can work under 1000℃
Q:How to detect the acid resistance of refractory? Is there any standard? Thank you
There is a standard. However, the range what you said is a little big, it's difficult for me to say. But though the scope is a bit big, it should be: You can check the industry standard network, to see whether you can check it.
Q:Why does refractory need to add coarse firstly and then add fine aggregate?
Adding coarse aggregate is to assure its good combination with fine aggregate. This is just the experience. You don't have to ask.
Q:What are the new refractories? What are the features? How about their application and development?
In metallurgy, in what position should it be used, in order to make the best. Answers are as following. In iron, steelmaking or converter. When questioning, pay attention to the ways. Answers: Try to use synthetic refractory materials.
Q:What are grades of refractory materials?
Refractories have lots of varieties which all have different purposes.1 divided according to the level of refractoriness: ordinary refractory materials: 1580 ℃ to 1770 ℃, advanced refractories: 1770 ℃ to 2000 ℃ and super refractories: above 2000 ℃ 2, divided in accordance with shapes and sizes : Standard ones: 230mm × 113mm × 65mm, no more than four ruler.

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