High Quality Pure Brown Fused Alumina BFA

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3000 m.t./month

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Product Description:

High Quality Pure Brown Fused Alumina BFA


calcined Brown corundum 
1) High Al2O3 Content: 95%min 
2) Professional manufacture 
3) Hot sale overseas

Calcined Brown corundum 

1)    High AL2O3 content: 95%min 

2)    Professional manufacturer 

3)     Prompt delivery


Product Description


Our brown fused alumina is tilting furnace type and crushed by Barmac.

we have own power station and bauxite bases, and adopt special cooling crystallization process, greatly improved its grinding precision and efficiency, applicable to make high-grade bond abrasives.


Main feature:

1). Low expansion coefficient

2). Good Hydrophily

3). High compression strength

4). Abrasives made from it is in blue color, no reticulate crack


Chemical index:

Al2O3 95.3%-96.5%

Fe2O3<0.3%< span="">

SiO2 ≤1.0%

TiO2 >2.0%

CaO ≤0.45%


Physical index:

True Specific gravity 3.97g/cm3

Cleanliness > 97.5%



1.     High-grade refractory materials

2.     suitable for making ceramic and resin bonded abrasive tools

3.     used for grinding metals of high-tensile strength

4.     Aviation

5.     LED

6.     Sandblasting




High Quality Pure Brown Fused Alumina BFAHigh Quality Pure Brown Fused Alumina BFA

High Quality Pure Brown Fused Alumina BFAHigh Quality Pure Brown Fused Alumina BFA

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The fire endurance time of the rock wool laminboard is generally adout 1 or 2 hours.
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Usually the clay refractory bricks will be able to meet the requirements
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The so-called fire doors are only posted a layer of fireproof material. Door selection still depends on the timber inside. The simplest way is to see the weight value, fireproof material layer, and they are generally paint-free doors. with fireproofing function..
Q:How to divide the materials according to the National Fireproofing Material Standard?
Each country has its own fire safety standards, I do not know which country's standard do you want to know, and each country of fireproof material to the division level is not the same. GB GB 8624, the German standard DIN 4102-1, the British standard BS 476, French standard NF P92 -501 and so on. GB 8624 is Chinese building materials and grade of combustion performance. The information coming form fire resources network (FireTC.
Q:how to classify the fireproofing material levels A1 A2 B1?
their classification is shown specifically in Fireproof  Specification of Building Interior Decoration Design GB 50222-95 appendix A, flammability,inflammability materials, flame retardency, noninflammability: combustion performance of A, B3, B2, B1 materials are divided into
Q:What is the function of red stone refractory materials
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Class A incombustible material: Granites, marbles, terrazzos, cement products, concrete products, plasterboards, clay products, glass, tiles, mosaics, steel, aluminum, copper alloys; B1 class flame nonflammable materials: Ceiling materials: gypsum plaster boards, fibrous plasters, cement particle boards, mineral wool decorative acoustic panels, glass wool decorative acoustic boards, perlite decorative acoustic boards, flame retardant plywoods and medium density fiberboards, rock wool decorative panels, flame retardant woods, aluminum foil composite materials, flame retardant phenolic laminates, aluminum foil glass fiber reinforced plastic composite materials; Wall covering: gypsum plaster boards, fibrous plasters, cement particle boards, mineral wool boards, glass wool boards, perlite boards, flame retardant plywoods, flame retardant medium density fiberboards, fireproof plastic decorative plates, nonflammable double-sided particle boards, multicolor paints, nonflammable wallpaper and textile wall cloth, flame retardant simulated granite decorative plates, magnesium oxychloride cement prefabricated wall panels, flame retardant glass fiber reinforced plastic plates, PVC plastic clapboards, high-strength and lightweight composite wallboards, fire-retardant molded wood composite boards, flame retardant colored artificial boards, nonflammable glass fiber reinforced plastics, etc.
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Streaming fireproof material is castable refractory that can flow and degas without virbration, which is suitable for thin-wall or places that cannot be molded by vibration because of complex shapes. Well, appropriate amount of water is necessary for it. Its characteristic goes that it can be cast into various shapes of construction body without virbration and it will not reduce or not significantly reduce the performance of castable at the same time.
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Seven levels are divided according to "The classification of combustion performance of building materials and products", namely, A1, A2, B, C, D, E, F. It mainly refers to the combustion performance of materials. You can check on this standard for the specific dividing evidence. There are detail charts which mainly describe that whether there is drip or not, the ignition time, continuous burning time and so on.
Q:Who knows the model of fireproofing materials?
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