Black fused alumina, also known as black aluminum oxide, is a type of abrasive material that is commonly used in various industrial applications. It is made from the high-quality bauxite ore by fusing it in an electric arc furnace at high temperatures. During this process, the aluminum oxide content in the bauxite is reduced, resulting in a material that is predominantly composed of aluminum oxide and iron oxide.
*Color and Appearance: As the name suggests, black fused alumina is black in color. It has a matte appearance and a high hardness.
*Hardness: Black fused alumina is known for its high hardness, making it suitable for abrasive applications. It is often used for cutting, grinding, and polishing metals, ceramics, and other materials.
*Abrasive Properties: It is an abrasive material with excellent cutting and grinding properties. It is used in applications such as sandblasting, grinding wheels, abrasive belts, and abrasive powders.
*Strength and Durability: It has good strength and durability, making it a reliable choice for applications where wear resistance is essential.
*Chemical Composition: Black fused alumina typically contains aluminum oxide (Al2O3) as the primary component, along with iron oxide (Fe2O3) and small amounts of other impurities.
Applications:
Grinding and Polishing:
Surface Preparation:
Cutting:
Refractory Industry:
Abrasive Blasting:
Lapping and Polishing:
Cutting Tools:
Refractory Castables:
Abrasive Powders and Compounds:
Tumbling and Deburring:
BFA Brown Fused Alumina powder in refractory
Brown corundum micro powder is produced by a reduction fusion of high quality bauxite in electric arc furnaces. It is both a hard and tough material with high strength, making it an excellent abrasive grain for applications.Its thermal properties make it an excellent raw material for abrasive and refractory applications.
Advantages Of Brown Corundum Powder:
1. Large crystal, high strength, good toughness, dense texture, high bulk density.
2. Stable performance between batches.
3. The higher grinding efficiency and polishing brightness, the grinding efficiency is much higher than the soft abrasives such as silica.
4. Good particle appearance, high surface finish of the polished object.
Product Parameter
Grains Specifications And Composition
JIS
240#,280#,320#,360#,400#,500#,600#,700#,800#,1000#,1200#,1500#,2000#,2500#,3000#,3500#,4000#,6000#,8000#
European standard
F240,F280,F320,F360,F400,F500,F600,F800,F1000,F1200,F1500
National standard
W63,W50,W40,W28,W20,W14,W10,W7,W5,W3.5
Applications
High Quality Brown Fused Alumina Powder for Precision Casting Bfa Brown Fused Alumina Powder in Refractory
1.Grinding and polishing of stainless steel, optical glass, bamboo or other materials.
2.For polishing various spare parts: bicycles, sewing-machine, hard metal tools, medical apparatus, timepieces, glass products and stone grinding.
3.For making abrasive tools: fiber-reinforced cutting wheels, grinding wheels, sand cloth, paper and paste.
High Quality Brown Fused Alumina Powder for Precision Casting Bfa Brown Fused Alumina Powder in Refractory
White Fused Alumina (white corundum)
WFA Abrasive blasting media is made of 99% aluminum oxide powder as raw material, which is refined and crystallized by electric melting (thus white corundum is also called fused alumina and white fused alumina). The white corundum sand produced by our factory has high purity, low impurities, low sodium content, uniform particles and high whiteness.
Product Feature
1. The Al2O3 purity is high(99%min). So the hardness & grinding ability is high with good grinding efficiency.
2. High wear-resistance. Even in high-temperature circumstances, the strength is still excellent.
3. The white fused aluminum oxide powder is suspension treated by water. So it is of flowability and easy to scatter.
4. Low oil absorption especially for water-based paint.
5. Neutral property with PH value around 7-8.
6. High whiteness. It doesn't affect the color of paints or coatings adding Al2O3 powder.
7. Resistant to most corrosive alkali and acid. It doesn't dissolve in water.
8. Resistant to high temperature up to 1900 C. 9. Good particle size consistency without big size grains. So it prevents scratch on the grinding substrate.
