Brown Fused Alumina (BFA) 

Brown Fused Alumina Abrasive Applications:

 

Grinding & Cutting Wheels – Used in manufacturing durable and precise grinding tools.

Abrasive Blasting – Perfect for tough surface cleaning and preparation.

Polishing & Finishing – Offers smooth, uniform results for polishing.

Refractory Materials – Withstands high temperatures, making it suitable for heat-resistant materials.

 

Physical Properties and Chemical Composition of Brown Fused Alumina

 

Chemical Composition(%)		Physical Property
Al3O3	92.5-97	Gravity	3.50-3.90g/cm3
Fe2O3	0.3-1.0	Density	1.30-1.90g/cm3
SiO2	1.0-2.0	Hardness (Mohs)	9.0-9.3
TiO2	1.5-4.0
Treatment Methods	Heat treated, Blue fired, MT-coating, HT-coating
Bulk Density	Low, Medium, High
Grain Shape	Sharp, Blocky, Angular
Toughness	Low, Medium,High,Very high
Application	Resin Abrasives, Coated Abrasives, Sand Blasting,Vitrified Abrasives,Bonded Abrasives
Color	Brown, Dark Brown, Blue,Bright Red,Dark Red
Size	5-8mm (-8+5mm), 3-5mm (-5+3mm), 1-3mm (-3+1mm), 0-1mm (-1mm)
	FEPA Standard	F8, F10, F12, F14, F16, F20, F22, F24, F30, F36, F40, F46, F54, F60, F70, F80, F90, F100, F120, F150, F180, F220, F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200, F1500
	JIS Standard	#8, #10, #12, #14, #16, #20, #22,#24, #30, #36,#40, #46, #54, #60, #70, #80, #90, #100, #120, #150, #180, #220, #240, #280, #320, #360, #400, #500, #600, #700, #800, #1000, #1200, #1500,

Choose DOMILL Brown Fused Alumina

With 30 years of expertise, DOMILL Abrasive provides top-quality BFA that meets your needs. We ensure consistent quality, bulk availability, and fast delivery, supported by excellent customer service.

 

Reach out to learn more about how our BFA products can improve your production process.

 

Frequently Asked Questions (FAQs) about Brown Fused Alumina

1. What is Brown Fused Alumina used for?
Brown Fused Alumina is mainly used in abrasive tools, refractory materials, and sandblasting. It is widely used in grinding wheels, coated abrasives, refractory bricks, and blasting media.

 

2. How is Brown Fused Alumina made?
It is produced by melting bauxite, iron, and anthracite in an electric arc furnace at temperatures over 2,000°C. After cooling, it is crushed, shaped, and graded into different grain sizes.

 

3. What is the hardness of Brown Fused Alumina?
Brown Fused Alumina has a Mohs hardness of 9, making it one of the hardest synthetic abrasives available, just below diamond and silicon carbide.

 

4. How does Brown Fused Alumina compare to White Fused Alumina?
Brown Fused Alumina: More tough and durable, better for heavy grinding and general applications.
White Fused Alumina: Higher purity and hardness, ideal for precision grinding and polishing.

 

5. What industries use Brown Fused Alumina?
Abrasive manufacturing (grinding wheels, sandpaper)
Refractory production (bricks, castables)
Surface preparation (sandblasting, rust removal)

 

6. What are the chemical properties of Brown Fused Alumina?
Al₂O₃ (Aluminum Oxide): 94-96%
Fe₂O₃ (Iron Oxide): ≤0.3%
TiO₂ (Titanium Dioxide): 1.5-3.5%

 

7. Is Brown Fused Alumina environmentally friendly?
Yes, it is non-toxic, reusable, and contains low dust emissions, making it an eco-friendly abrasive choice.

 

8. What are the advantages of Brown Fused Alumina in abrasive tools?
High durability – Extends the lifespan of grinding wheels.
Tough & sharp – Ensures efficient material removal.
Good self-sharpening – Improves cutting efficiency.

 

9. Can Brown Fused Alumina be reused in sandblasting?
Yes! It is recyclable multiple times depending on the blasting process and particle size.

 

10. How should Brown Fused Alumina be stored?
Store in a dry, cool place, away from moisture and contamination, to maintain its effectiveness.