shaft kiln bauxite Al2O3 75,80,85,86,87,88,90%,95%,

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
10000 m.t./month

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Product Description:

Quick Details

Place of Origin:

Hebei, China (Mainland)

Shape:

Powder, powder

Material:

bauxite

SiO2 Content (%):

7-14%

Al2O3 Content (%):

80-87%

MgO Content (%):

0.3%

CaO Content (%):

0.3%

Refractoriness (Degree):

1770°< Refractoriness< 2000°

CrO Content (%):

3%

SiC Content (%):

2.4%

Model Number:

CNBM

Brand Name:

Banyue

color:

white,khaki

Dimensions:

120mesh,200mesh,325mesh

Application:

refractory product

Chemical Composition:

Al2O3, CaO, Fe2O3





Packaging & Delivery

Packaging Details:50kg/bag, or according to customer requirements customized.
Delivery Detail:10 days

 

Product Description

 

Content

    1

   2

   3

   4

Al2O3

80%min

85%min

86%min

87%min

SiO2

14%max

 

9%max

 

8.5%max

 

7%max

 

Fe2O3

2.5%max

2.0%max

2.0%max

2.0%max

TiO2 

4.0%max

4.0%max

4.0%max

4.0%max

CaO+MgO

0.6%max

 

0.6%max

 

0.6%max

 


K2O+Na2O

0.3%max

 

0.3%max

 

0.4%max

 

0.6%max

 

B. D.

2.6g/ccm min.

3.10g/ccm min.

3.10g/ccm min.

3.0-3.10g/ccm 

H2O




0.5%max 

Refractoriness

1770° < Refractoriness< 2000°

NO.

Size

Size Distribution

1

0-1mm

0-0.5mm 60%max

2

1-3mm

90% min

3

3-5mm

90% min

shaft kiln bauxite Al2O3 75,80,85,86,87,88,90%,95%,


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Q:How long can gypsum board endure fire?
Fire endurance refers to the fire-resistent limit of the whole system of light-gauge steel structure coupled with gypsum. It does nor merely refers to gypsum board. Fire endurance of the common gypsum board with the thickness of 9.5mm keeps 1.5 hours. Those gypsum board with the thickness of 12mm has a fire endurance of 3 hours.
Q:What refractories have good mechanical property resistance and heat expansion and cold contraction property?
Aluminium oxide ceramics. I would like to know that what kinds of refractory materials can combine together and what kind of masonry way can be used for these materials so as to achieve the perfect combination.
Q:What type of firebrick does TZ-3 represent?
It is the standard brick.
Q:How to divided the grade of external wall thermal insulation materials?
Synthesized the three versions of GB8624 (1997,2006,2011), external wall thermal insulation fire rating can be basically divided into: A1, A2, B1, B2, B3 and other levels. There are many technical indicators to make specific division, but I partly cannot report for a while, because it is very professional and technical. I hope I can help you!
Q:Pals who know something about fire resistant material please tell me how many types of refractory material there are
Refractory materials used in special applications include high temperature oxcide, such as alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconia and other, refractory compounds, such as carbides, nitrides, borides, silicides and sulfides; high temperature composite materials, mainly contain metal ceramic, high temperature inorganic coatings and fiber reinforced ceramics.
Q:What are the main characteristics of the sic refractories?
The physical properties of SiC refractories include structural properties, thermal properties, mechanical properties, usability and job performance. The structural properties of refractory include porosity, bulk density, water absorption, air permeability, an the distribution of pore size. The thermal properties of refractory include thermal conductivity, thermal expansion coefficient, specific heat, heat capacity, thermal diffusivity, and thermal emission rate. The mechanical properties of refractories include withstand voltage strength, tensile strength, anti bending strength, torsional strength, shear strength, impact strength, abrasion resistance, creep resistance, adhesive strength, and elasticity modulus. The usability of refractories include refractoriness, load softening temperature, linear change on reheating, thermal shock resistant performance, slag resistance, acid resistance, alkali resistance, hydration resistance, corrosion resistance to CO, conductivity, and inoxidizability.
Q:Are the specification of fireclay bricks and ordinary clay brick the same?
The standard size of refractory bricks in our country is: 230mm × 114mm × 65mm; ordinary brick: 240 ×115 ×53, building blocks: (it is divided into blind hole and via) 240×390×190, 240×190×190, 240×90×190, 190×190×190, 190×390×190, 190×190×190, 190×90×190, 140×390×190, 140×190×190, 990×200×400, 0×390×190, 90×190×190, 90×90×190. Another is interlocked hollow block : 90×200×400,90×200×245,90×200×200,90×200×100,90×200×290,150×200×275,150×200×200,150×200×100,150×200×290.
Q:How to make use of waste refractory materials whose main elements are alumina and mullite?
Crushing and pressing refractory bricks, or refractory parts . Such as welding positioner tracks use disposable tools.
Q:Who knows that among refractory materials, insulation boards from which refractory material industry is superior in quality?
Using high temperature insulation material during casting process .In the molding, assembly the insulation board on the ingot head or install heat insulation cap . There are three ways to install the molded steel insulation board and install insulation board on at the head of the ingot, namely, clamping, nail fixation and mosaic technique.Compared with clay-based liner, the use of insulating board will improve high steel billet rate up to about 5% to 10%.
Q:Is the linear change on reheating the same as heating permanent linear change of refractory material?
“+”represents expansion. the afterexpansion and aftercontraction after cooled to be at room temperature. The change may significantly damage the masonry of thermal kiln. There are regulations on the linear change on reheating of common refractory material in the national standard. Some physical chemical changes may continue. It is defined as the change from being heated to the specified temperature of refractory material sample. Heat preserving for a while till afte cooling to be at room temperature, then the residual will expand or contract in its length, heat preservation for a while, organization vitrification, the irreversible changes of its length refers to heating the firing refractory to be at high temperature, so as to make the volume of refractory materials expand or contract, due to the influence of uneven temperature or lack of time, otherwise it will cause the deformation of the refractory ball and make this indicator within standard even reach smaller value, so firing control must be strengthened in product production. But it is should not be too high. For refractory materials with same chemical composition, the linear change on reheating is produced in the heating process. Properly increasing sintering temperature and prolonging the holding time is an effective process measures, make its firing inadequate. When subjected to high temperature, it can reduce the thermal shock resistance. Minus sign "-" represents contraction. The permanent line rate refers to heating the fire refractory ball to the specified temperature. Linear change on reheating, also known as residual linear change, is an important indicator to assess the quality of refractory in the long time use. To control the permanent line rate within the standard or reach the minimum value.

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