$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 1$
$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 2$
$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 3$
$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 4$

$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory$

$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 1$

$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 2$

$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 3$

$High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory System 4$

High Quality Pure Brown Fused Alumina BFa - Raw Materials for Refractory

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 3000 m.t./month

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High Quality Pure Brown Fused Alumina BFA

Specifications

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%

Application

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

Pictures:

High Quality Pure Brown Fused Alumina BFA

If you’ve any enquiries, please don’t hesitate to let us know.

Q: what is best for making refractory insulation for Blast furnace, hot stove.: High dimensional insulating blanket.

Q: Who knows the refractoriness of high temperature lightweight firebricks?: The disadvantage of light refractory bricks is its poor thermal insulating ability and the advantage is its endurable heat resistance property. The temperature range and main features of thermal insulation refractory are as follows. Diatomite brick

Q: How long can gypsum board endure fire?: General gypsum plaster board with a thickness of less than 12mm has a fire endurance which is less than half an hour. Scheme One of gypsum board partition system by using 75# series of lightgage steel joist: separation distance of keels keep 600mm in vertical direction. The thickness is greater than 0.5mm; gypsum board: it shoule be the board of double-sided and single-layer with the thickness of 12mm. Fire-resistant gypsum plaster board's fire-resistance limit: 1 hour. Sound insulation index: over 35 rwdb.

Q: I wanna ask about the building insulation materials fire rating?: Hello, I am happy to answer your questions about the classification of building insulation materials fire rating: 1. The thermal insulation material of level A combustion performance: Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2. combustion performance is level B1 insulation materials: Extruded polystyrene board (XPS) after special treatment / Special treatment of polyurethane (PU), phenolic aldehyde and gelatine powder polyphenyl granule 3 combustion performance is level B2 insulation material: Molding polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc. I hope I can help you

Q: Physical and chemical indicators of various refractory.: There are too many of them.

Q: How to count the construction costs of refractories?: In winter, the temperature of the the fire-resistant masonry, fire-resistant plastic, sodium silicate, phosphoric?acid castable should be maintained above 5 ℃. Usually greenhouses in which heating facilities are installed to maintain the appropriate temperaturere for the construction environment should be erected in refractory masonry. The temperature around the construction site of the industrial furnace and refractory masonry shall not be lower than 5 ℃.

Q: What are the fire resistance ratings of the glass partition?: Hello, friend. The glass partition system is composed entirely of metal structures, glass, color plate and other materials which also has fire resistance capacity. When the inner structure of the system is steel structure, the fire resistance of which is 30 mins, 60mins or even longer.

Q: Where is refractory used? Thank you!: According to its refractoriness, it can be divided into ordinary refractory (1,580℃ to 1,770℃), high class refractory (1,770℃ to 2,000) and super refractory (above 2,000℃); according to chemical property, it can be divided into acid , neutral and alkali refractories, and including refractory used for special occasion. The current definition of refractory do not only depend on whether the refractoriness is above 1,580℃. At present, refractory is widely used as inorganic nonmetallic material of production equipment lining in metallurgy, petrifaction, cement, ceramics, power, etc. Refractory generally has good thermal shock resistance, chemical attack resistance, low thermal conductivity and coefficient of expansion, widely used in chemical, construction material, mechanical manufacturing, and ceramics, accounting for 50% to 60% in the total output. It can resist high-temperature action. Refractory has many varieties. Refractory materials are widely used in metallurgy; chemical properties divided by acidic refractories. In addition, cement, silicates. Refractoriness refers to that when cones sample made from refractory has no load. Currently, refractory refers to that is widely used in metallurgy, including neutral refractory and basic refractory.

Q: What are the construction fire-proof materials?: 1. fire?retardant?coating 2. fireproof?panel 3. fire proof and sealing material 4. flame resisting decorative materials 5. Green fire prevention materials

Q: who knows the fire endurance of fireproof coating?: fireproof coating of different thickness differs in its fire endurance. Let me intrduce you as follows: The amount of time of 0.5 hours refractory thickness 0.45mm 0.79kg / m21 hr 0.9 mm 1.5kg / m21.5 hour 1.4 mm 2.3kg / m22 hr 2.0 mm 3.3kg / m22.5 h 2.8 mm 4.6 kg / m2

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