Brown Fused Alumina Powder

Production & Composition
Brown Fused Alumina (BFA) is produced by smelting high-quality bauxite, anthracite, and iron filings in an electric arc furnace at extreme temperatures. The result is a robust material primarily composed of Al₂O₃ (95%-97%), with trace elements like Fe, Si, and Ti enhancing its structural integrity.

Key Properties & Applications
Renowned for its exceptional hardness (Mohs 9.0), thermal stability, and corrosion resistance, Brown Fused Alumina Powder is indispensable across multiple industries:

Refractory Applications: Ideal for high-temperature linings in steel mills, cement kilns, and glass furnaces due to its heat endurance.

Abrasive Performance: Superior grinding efficiency makes it a top choice for cutting tools, sandblasting, and precision polishing.

Chemical Industry: Unmatched durability ensures long-lasting performance in harsh environments.

Available Grades & Sizes
Our BFA powder comes in multiple specifications to suit diverse industrial needs:

section sand		0-1mm 1-3mm  3-5mm  5-8mm
fine powder		200#-0       320/325-0
grain size sand	F/P	12# 14# 16# 20# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#
mircro powder	W	W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5
	JIS	240# 280# 320# 400# 500#  600#  700# 800# 1000# 1200# 1500# 2000# 2500# 3000#
	EU	F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500

raw material	smelting bauxite, anthracite and iron fillings
crystal form	trigonal system
main chemical compostion	α-Al2O3
color	brown
smelting method	tilting furnace/fixed furnace
true density	≥3.9g/cm3
Moh's hardness	9.0
melting point	2250℃
Grade	Frist grade
chemical index
Al2O3	≥95%
SiO2	≤1.0%
Fe2O3	≤0.15%
TiO2	2.2-2.8%

 

1. Premium Raw Materials – Quality Starts from the Source
We handpick high-grade bauxite with an Al₂O₃ content of 95% or higher, ensuring superior purity and hardness for abrasive applications. Our strict material selection guarantees consistent performance from the very beginning.

2. Double Refining Process – Beyond Industry Standards
Unlike standard production methods, our brown fused alumina undergoes secondary refining-an extra 3 hours of smelting-to enhance crystal structure, toughness, and cutting efficiency. The result? A sharper, more durable abrasive.

3. Meticulous Grading – Precision in Every Grain
After smelting, each batch is manually screened and classified to meet exact particle size specifications. No shortcuts-just rigorous quality control to deliver uniform, high-performance abrasives.

4. Advanced Purification – Purity You Can Trust
Our 5-stage high-power magnetic separation system aggressively removes iron and silicon impurities, ensuring minimal contamination. This leads to better grinding performance, longer lifespan, and fewer defects in your final product.

5. Uncompromising Quality Control – Excellence in Every Step
From raw material inspection to final packaging, our dedicated QC team supervises every production phase. Combined with skilled technicians and strict testing protocols, we guarantee reliability batch after batch.

 

Product Usage of Brown Fused Alumina Powder

Renowned as the "Industrial Teeth," brown fused alumina powder is a versatile and high-performance abrasive material widely applied across multiple industries. Its exceptional hardness, durability, and thermal resistance make it indispensable for demanding industrial processes. Below are its key applications:

1. High-Performance Refractory Materials

Brown fused alumina powder serves as a critical component in manufacturing premium refractory products, including high-grade castables, refractory bricks, and linings. Its superior heat resistance ensures stability in extreme conditions, making it ideal for furnaces, kilns, and high-temperature industrial equipment.

2. Precision Sandblasting & Surface Treatment

Widely used for surface preparation, it effectively cleans and textures materials such as aluminum, copper, glass, and precision molds. Its sharp edges and consistent particle size ensure uniform finishes, enhancing adhesion for coatings and improving surface quality.

3. Advanced Grinding & Polishing Applications

As a premier grinding abrasive, it is extensively utilized in processing optical glass, monocrystalline silicon, lenses, watch glass, crystal, and jade. Its controlled particle distribution and high cutting efficiency enable ultra-fine finishing for delicate and high-precision components.

4. High-Quality Resin Bonded Abrasives

Ideal for resin-bonded grinding wheels and cutting discs, brown fused alumina offers excellent hardness, toughness, and self-sharpening properties. Its uniform grain structure ensures prolonged cutting performance, making it suitable for metalworking, stone processing, and precision tool grinding.

5. Coated Abrasives Manufacturing

A key raw material for producing abrasive papers, cloths, and belts, its sharp and durable grains provide consistent cutting power for woodworking, metal finishing, and surface polishing applications.

6. Wear-Resistant Functional Fillers

Incorporated into specialized industrial products, it enhances durability in automotive brake components, heavy-duty tires, and construction materials. Additionally, it is used in high-traffic areas such as airport runways, docks, industrial flooring, and sports surfaces to improve skid resistance and longevity.

7. Filtration & Separation Media

Due to its high density and chemical inertness, it serves as an effective filtration medium in water treatment systems, purifying drinking water and industrial wastewater. It is also applied in non-ferrous mineral processing and as a weighting agent in oil drilling muds.

8. High-Pressure Hydro-Abrasive Cutting

As a cutting medium in waterjet systems, it enables precise slicing of thick steel plates, oil pipelines, and other hard materials. The combination of ultra-high-pressure water and abrasive particles ensures clean, burr-free cuts with minimal material waste.

With unmatched versatility and reliability, brown fused alumina powder remains a cornerstone of industrial abrasives, delivering superior performance across grinding, blasting, polishing, and wear-resistant applications.

 

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