refractory grade size 1-3mm calcined bauxite

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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:

Henan, China (Mainland)

Shape:

Block, block

Material:

Alumina Block

SiO2 Content (%):

<8%< p="">

Al2O3 Content (%):

75%-90%

MgO Content (%):

<0.5%< p="">

CaO Content (%):

<0.5%< p="">

Refractoriness (Degree):

1770°< Refractoriness< 2000°

CrO Content (%):

0

SiC Content (%):

0

Model Number:

1-3mm

Brand Name:

cnbm

Color:

yellow, black and white

Application:

Refractory

Moisture:

0.03% max

Bulk density:

≥2.7g/cm3

Model Number (Grade):

75,80,85,86,87,88,90

Sample:

Free sample of bauxite is available

Fe2O3:

3.0% max

TIO2:

0.4 max

K2O+NA2O:

0.3 max

Packaging & Delivery

Packaging Details:25kgs/woven bag with PE liner bag 
1000kgs in a big bag
Delivery Detail:7 days

refractory grade size 1-3mm calcined bauxite

 

 

1.  Calcined Bauxite 1-3mm brief  introduction:

 

   Calcined bauxite is a mixture of minerals that contain various concentrations of hydrated 

aluminum oxides as well as impurities. The primary ore minerals are gibbsite (alumina tri-hydrate), boehmite and diaspore (alumina monohydrates).

 

2.   Different grades calcined Bauxite 1-3mm tech  datas:

 

Grade

AL2O3

FE2O3

TIO2

K2O+Na2O

CaO+MgO

Bulk density

75

75min

≤3.0

≤4.0

≤0.3

≤0.5

≥2.70

80

80min

≤3.0

≤4.0

≤0.3

≤0.5

≥2.80

85

85min

≤2

≤4.0

≤0.3

≤0.5

≥3.00

86

86min

≤2

≤4.0

≤0.3

≤0.5

≥3.10

87

87min

≤2

≤4.0

≤0.3

≤0.5

≥3.20

88

88min

≤1.8

≤4.0

≤0.25

≤0.5

≥3.25

90

90min

≤1.8

≤4.0

≤0.25

≤0.5

 ≥3.25

 

3. Sizes  available:

 

Grain size : 8-5mm, 5-3mm, 3-1mm, 1-0mm

powder: -320mesh, -280mesh, -240mesh, -200mesh, 

        -180mesh, -150mesh, -120mesh, -100mesh

        320F  200F  280F   240F   

        200F  80F  150F   100F 

4.  Calcined Bauxite 1-3mm applications:

Aluminum smelting

Precision casting

Refractory products

Grinding materials

refractory grade size 1-3mm calcined bauxite

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Q:How long is the fire endurance of the rock wool board?
In the fire safety rules, of the building materials are classified as non-burning combustion body, difficult to burn the body and burning body categories depending on its difficulty level of burning. Rock wool board is the fiber processed by the coated steel sheet and basalt minerals and other inorganic minerals,and the building panels through artificial composition. Because that the dominant sectors, like, steel plate and rock wool are non-combustible materials, so it should be considered as non-combustible component. The fire resistance of rock wool board has its judging criteria. Loss of support capacity, loss of integrity and loss fire insulation function. Its fire resistance is within 2 hours.
Q:What thickness is needed of the ultra-thin fireproof paint with a fireproof time of 2.5 hours?
There are two kinds: 1, the thickness of the plate is between 20 ~ 50 mm with composite structure 2, sheet thickness is between 6 ~ 15 mm calcium silicate fire prevention board.
Q:How to choose construction external wall thermal insulation and fireproofing materials?
The width of fireproof partition shuld be greater than 30CM, and the thickness should be the same as total thickness of thermal insulation materials. Fire barrier zone thermal insulation board and base wall should be stuck in whole area. Fire Barrier zone thermal insulation board should be stuck with the assistance of anchor bolt which must press the mesh of the bottom layer. Fire Barrier zone should be set above the door and window, with a distance of less than 50cm between the lower edge of fire barrier zone and the upper edge of window.
Q:How is the fire endurance of the fireproof paint?
Fireproof endurance. fire resistance test of certain building components showed by standard time temperature curve from starting of fire to lose the supporting capabilities or its integrity or fireproof property. The fire proof endurance is 5hours.
Q:The history of refractory material
Q:What is the the best matching ratio of refractory cement?
The best matching ratio of refractory cement is 30%. Refractory cement is also known as aluminate cement. Aluminate cement takes bauxite and limestone as raw materials, alumina content of about 50% as the clinker. And it is a hydraulic cementing material made by grinding. Refractory cement is also known as aluminate cement. Aluminate cement is often yellow or brown or gray. The main mineral of aluminate cement is mono calcium aluminate (CaO · Al2O3, abbreviated CA) and other aluminates, and a small amount of dicalcium silicate (2CaO · SiO2), etc. It is a special cement. I hope my answer will be helpful to you.
Q:Does hardware construction materials contain refractory?
refractory includes one kind of building materials. It is a special material and not commonly used.
Q:What's the fire endurance of fire windows?
Fire endurance of fire doors and fire windows stipulated by the fire prevention norm: Fire endurance of A class fire door or fire window is 1.2h rather than 1.5h, and fire endurance of B class fire door or fire window is 0.9h rather than 1.0h. Fire prevention code doesn't explicitly state that the fire door has thermal insulation function, so it can definitely be interpreted that the fire door only has fire integrity. For the fire door without heat-shielding performance, at certain distance from the unexposed surface, it has strong thermal radiation and is easy to hurt people. For the A class thermal insulating fire door, its fire integrity is 0.1h shorter than that of the corresponding fire door stipulated in the specification, but its heat-shielding performance and integrality is improved. All in all, compared with the specification that the fire integrity of the A class fire door should be 0.6h, it has much more improved its performance.
Q:What material is refractory material?
alumina refractory concrete, silica brick clay brick, metal ceramic, high temperature machine coating fiber reinforced ceramics, diatomite product, asbestos products, insulation board refractory. The definition of refractory can be searched in the website.
Q:How is the division of the fire resistant level of the rock wool board?
It's like this: China's national standard GB8624-97 divides the combustion performance of building materials into the following grades. Level A: non-flammable building materials. Level B1: flame-retardant building materials. Level B2: combustible building materials. Level B3 flammable building materials. section II Combustion performance and fire endurance of building components. First, The combustion performance of buildings of building components. The building is composed of components, such as foundation, walls, lubrication columns, beams, plates, roofs and stairs, ect. Building components are constituted by the building materials, whose combustion performance depends on the combustion properties of the used construction materials. Section One Combustion performance of building components. The building components are divided into three categories according to their combustion properties. First, non-combustible component: the component made by incombustible materials. The incombustible material refers to that when meeting the Oxygen in the air, it will not burn.

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