You are here: Home » Brown Fused Alumina

Brown Fused Alumina

Brown fused alumina (BFA) is a synthetic abrasive material produced by the fusion of high-quality bauxite in an electric arc furnace at high temperatures. It has a wide range of applications across various industries due to its hardness, toughness, and resistance to wear. Here are some common applications of brown fused alumina:

Abrasives

Grinding Wheels: Used in the production of grinding wheels and discs for cutting, grinding, and polishing metals, stones, and other materials.
Sandblasting: Used as a blasting media for surface preparation, cleaning, and finishing of metal parts, removing rust, paint, and scale.
Abrasive Papers: Incorporated into sandpapers and abrasive cloths for smoothing and finishing surfaces.

Refractories

Refractory Bricks: Used in the production of refractory bricks and shapes for lining furnaces, kilns, and other high-temperature industrial equipment.
Castables and Ramming Mixes: Included in monolithic refractories like castables and ramming mixes for use in high-temperature environments.

Polishing And Lapping

Polishing Compounds: Used in polishing and lapping applications to achieve a fine finish on metals, ceramics, and glass.
Precision Polishing: Employed in precision polishing of optical lenses, semiconductors, and other delicate surfaces.

Ceramics

Ceramic Grinding Media: Used as grinding media in ball mills for fine grinding and dispersion of ceramic materials.
Ceramic Coatings: Applied as a coating on various surfaces to enhance wear resistance and durability.

Surface Coatings

Thermal Spraying: Used in thermal spraying processes to apply wear-resistant coatings on industrial components.
Anti-Slip Coatings: Included in anti-slip coatings for floors, stairs, and walkways to improve traction and safety.

Foundry

Foundry Sand: Used as a component in foundry sand for metal casting applications, providing excellent mold and core strength.

Product Index

Brown Fused Alumina Abrasive
Specification	F series F20-F180
Chemical Specification	AL₂O₃＞95% Si0₂<0.9% Fe₂O₃<0.15% Ti0₂: 2.3-2.8% CaO<0.30% MgO: about 0.25%
Physical Specification	Magnetic content F20-F24≤0.024% F30-F100≤0.019% F120-F180≤0.014%
Single Particle Compressive Strength	6.75kg
Ball Milling Toughness	51.5%
Bulk Density	1.72-2.05g/cm³
Cleanliness	> 98%
Capillary Phenomenon	19mm

Brown Fused Alumina Refractory Material
Grain Size	0-1 mm, 1-3 mm, 3-5 mm, 5-8 mm, etc
Quality Specifications	AL₂O₃>95.5% SiO₂: 0.6~0.9% Fe2O3<0.15% TiO₂> 2% CaO< 0.4%
Particle Size Composition	The sum of upper and lower limits shall not exceed 10% or meet customer standards
Magnetic Content	< 0.04%
Compressive Strength	38N
Molding Toughness	41%
Melting Point	2050 ℃
Refractoriness	> 1900 ℃
Vickers Hardness	2100hv
True Specific Gravity	3.97g/cm³

Bauxite Fused Mullite
Chemical Specification/Model	DM65 / DM70 / DM75
Physical Specification
Grain size	0-1-3-5-8mm or special size, 200 mesh and 325 mesh
Mohs hardness	6-7
Refractoriness	1800 ℃+
Apparent Porosity	≤ 4%
Refractoriness Under Load	1610 ℃
Melting Point	≥ 1870 cm³
Bulk Density	≥ 3.0g/cm³
Thermal conductivity (1000 ℃)
Linear Expansion Coefficient	(20-1000 ℃) 5.3 × 10-6 / ℃

With an annual production capacity of 20,000 tons of brown corundum powder, 30,000 tons of brown fused alumina grit, 5,000 tons of bauxite fused mullite, 20,000 tons of ceramic foundry sand.

Contact Us

Tel: +86-18603423131
E-mail: qxgx@qinxin.cn
WhatsApp: +8613643407252(Selina Guo)

+8618536385989 (Joanna Sun)
Add: Qinxin Industrial Park, Qinhe Town, Qinyuan County, Changzhi City, Shanxi Province, China