Second grade brown fused alumina 80% 85%

Brown fused alumina has three grades with 95%, 90%, 80-85% by Al2O3. The primary standard divides BFA into first grade, second grade, and third grade. The different chemical content is due to the crystallization and precipitation in the brown fused alumina smelting process. The middle part of electric arc furnace brown fused alumina is the best crystalline and high purity with 95% Al2O3. In the upper of the furnace, brown fused alumina is 90% content, and 80-85% brown fused alumina is in the bottom of the furnace. The price and usage are various due to the different chemical content.

Introduction of second grade brown fused alumina 80% 85%:

Brown fused alumina refractory is a dense material produced from bauxite raw material. The end product has a low iron content making it particularly valuable in refractory applications. Brown fused alumina is utilized within the refractory industry to manufacture high alumina unshaped or monolithic refractory products like bricks, castable, pre-cast shapes, and foundry applications, where the addition of brown fused alumina helps to obtain a smooth surface finish in investment castings.

Chemical compositions  of second grade brown fused alumina 80% 85%:

Item Second grade Third grade
Al2O3 80% – 90% 70% – 80%
SiO2 1.5% – 4.0% 2.0% – 5.0%
Fe2O3 6.0% – 10% 8.0% – 15%
TiO2 2.0% – 4% 3.0% – 5.0%
Bulk density 1.45g/cm³ 1.35g/cm³
True density 3.80g-3.9g/cm³ 3.70g-3.80g/cm³

Physical properties of second grade brown fused alumina 80% 85%:

Item Index
Color Dark Brown, Light brown
Crystal form Trigonal crystal system, hexagonal crystal system
Hardness 9 Mohs
Melting point 2250℃
Magnetic content ≤0.05%
Linear expansion coefficient 7-9(0 – 1600℃)

Applications of second grade brown fused alumina 80% 85%:

  • Blasting Media
  • Grinding
  • Metal Preparation
  • Anti-Slip
  • Abrasives
  • Milling

Brown Fused Alumina(FAQ)

What is the grit type?

Grit type is either aluminum oxide (white, pink, ruby red, brown, grey, etc.) silicon carbide (black or green), ceramic (blue and pink) or any combination of these. Grit types are sometimes mixed in combination for achieving certain cutting characteristics.  Aluminum oxide is friable (white) or semi-friable (pink, brown and grey, red,

What is the warranty policy?

Firstly, We make sure the quality before the goods to be packed, if clients get the item with Substandard products, We have warranty for our clients,we will ship out the new replacements.

What is silicon carbide?

Silicon carbide is a chemical compound of silicon and carbon and belongs to the group of carbides. The chemical formula is SiC.Silicon carbide is at the same time the hardest and lightest ceramic material and is also highly resistant against acids and alkaline solutions.

What is a silane coating used for?

When functionalising fused alumina, a very thin layer of a silane adsorption group is applied to the fused alumina particles. This organic surface coating has the effect of better embedding and increased scratch resistance in a melamine resin matrix, for example. Fused alumina has a high refractive index (n =

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Black Silicon Carbide Use-TAOANG

Over the past 18 years, TAOANG products range from raw material bauxite to processing follow-up products brown fused alumina, finishing white fused alumina and dense fused alumina, bubble alumina, and fused alumina micro powder. The production process is

Brown Fused Aluminum Oxide-TAOANG

Over the past 18 years, TAOANG products range from raw material bauxite to processing follow-up products brown fused alumina, finishing white fused alumina and dense fused alumina, bubble alumina, and fused alumina micro powder. The production process is

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Use Of Metal Silicon

Fused Alumina is the tooth of industry and is widely used in various industries. TAOANG is committed to sharing information on the upstream and downstream industries of fused alumina. Metal silicon, also known as crystalline silicon or industrial

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How is fused alumina obtained?

Raw materials containing aluminium oxide are electrothermally melted at a reaction temperature of more than 2,000 °C to produce the various fused aluminas. Different starting materials are used depending on the desired type of fused alumina. For instance,