Refractory Grade Brown Corundum Grains

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Specifications

Brown Fused Alumina
1 Al2O3: 95.0%min
2 Good Hardness & Toughness
3 Higher compressive strength
4 Heat-resistant propert

Brown aluminium oxide/brown fused alumina is fused and crystallized under high temperature from a mixture of bauxite and other and other raw materials. It is characterized by its high hardness,good toughness and shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel,general-purpose alloy steel,annealed malleable iron and hard broze,etc.It also can be used as refractory materials


Physical and chemical analysis for brown fused alumina:

Purpose

Specification

Chemical composition(%)

Al2O3

Fe2O3

SiO2

TiO2

Refractory Grade

Size sand

0-1mm
1-3mm
3-5mm
5-8mm
8- 12mm                  

   95min

       0.3 Max

          1.5 Max

  3.0 Max

0-3mm
0-5mm
0-10mm
0-25mm

  95min

       0.3 Max

    1.5Max

 3.0Max

Fine powder

180#-0
240#-0
320#-0

94 Min

        0.5 Max

   1.5 Max

3.5 Max

Application

1. it are suitable for grinding high-speed,high carbon steel

2.high-grade refractory materials

3.abrasives tool

4.grinding and polishing

5.ceramics

6.LED

7.sandblasting

8.aviation

Packing

1.25kg woven bag,40 woven bags/jumbo bag.

2.25kg woven bag,40 woven bags/pallet

3.25kg paper bag,40 paper bags/pallet

4.25kg paper  bag,40 paper bags/paper box

Advantages

1. ISO certificated manufacturer

2. since abrasives services in 1995

3. one-stop services

3.we have own import and export company and professional sales team

4.production capacity: 3500mt per month

payment

1.30%T/T in advance,70% against B/L Copy

2.L/C at sight


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Q:What are the fire endurance requirements of class A fire resistant door ?
The fire endurance of class A fire resistance door is 1.5H, but also depends on the product quality. The filling material of class A, B, C fire doors is the same, new fireproofing material-- perlite. The difference is their thickness. The general structure is: surface panel, fireproof board framework (filled with perlite) fireproof board panel. !
Q:Which industry does the metallurgy and thermal insulating and refractory material belong to?
Metallurgical industry and refractory industry.
Q:Are refractory materials and fireproofing materials the same?
Both refractory materials and fireproofing materials belong to the industry of construction materials and each of them can also be treated as an specific industry.
Q:What are the materials of insulation firebricks?
The furnaces of firebricks are generally divided into two types, namely, unshaped refractory materials and shaped refractory materials. Unshaped refractory materials, also called castables, is a mix of powdery particles of many aggregates and one or multiple adhesives. They must be stirred well with one or multiple liquids when in use, which has a strong liquidity. Unshaped refractory materials generally refers to firebricks. They have standard rules about their shapes and can also be processed temporarily as needed.
Q:Refractory factory grinding brick dust harmful to the body?
Therefore, in the workshop work must pay attention to do their own protection.
Q:How to distinguish the construction fire-proof material rating?
Currently the national standards divide building materials as follows: A1, A2, B, C, D, E, F. External wall thermal insulation fire rating can be basically divided into: A1, A2, B1, B2, B3 and other levels. Class A is non-combustible, class B1 flame retardant, class B2 combustible, class B3 flammable. Combustion performance grades of building materials and products are divided into class A1, A2, B, C, D, E, F. And grading of flooring materials and pipeline thermal insulation materials is also stipulated separately, whose combustion performance grade is distinguished by the subscript fl and L respectively. ie. Combustion performance grades for ordinary building materials and products are A1, A2, B, C, D, E, F; combustion performance grades for paving material are Alfl, A2fl, Bfl, Cfl, Dfl, Efl, Ffl; combustion performance grades for pipeline thermal insulation material are A1L, A2L, BL, CL, DL, EL, FL.
Q:What is the particle size of boron carbide for refractories?
0.3-0.5% is OK, but also with other additives, such as aluminum powder, silicon powder, magnesium alloy powder and so on. To achieve good results.
Q:Is there a worker in (Jigang refractory plant)?
Exactly, you are not in the strict sense of the refractory plant contract worker, your contract is not signed and refractory plant, your wage system, and the worker in the factory is not the same, you can not follow the normal off-duty execution system
Q:Who knows what kind of fire protection material is better?
Characteristic of polyurethane rigid foam thermal insulation decorative composite board: (1) ultra high cost performance, increased property's selling point (high cost performance) new model of thermal insulation material, excellent thermal insulation properties, elegant decorative effect, 50 years of service life, reduce maintenance costs and social waste. (2) it overcomes defects of traditional insulation technology (to solve the freezing and thawing, veneer cracking and shedding) traditional benzene board, the phenomenon of freezing and thawing that is easily appear in plastic extruded sheet, paint finish is easy to crack; its veneer facing can easily fall off; thermal insulation materials and wall are poorly adhered, easy off the whole. There is a themal bridge in dry hanging wall. (the characteristics of polyurethane composite board)
Q:What's the refractoriness and how to measure the refractoriness?
Bottom each side length is 8 mm and upper side length is 2 mm. Under a certain temperature-rising speed, when heating, refractory's resistance to high temperature from melting is called refractoriness. The properties of cross section into an equilateral triangle and height is 30 mm. When it bends down until the vertex and chassis contact temperature is the refractoriness of sample. It bends due to the influence of its weight. Make the will-measured material into standard pyrometric cone.

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