Brown Aluminum Oxide
Brown Aluminum Oxide (BFA) is produced by the fusion of high-quality bauxite in an electric arc furnace at high temperatures. Our Brown Aluminum Oxide has high compression strength, high toughness, excellent self-sharpening, low coefficient of thermal expansion, and excellent hydrophilia and cleanliness. It is a clean, high-strength material that resists oxidation and corrosion, maintains chemical stability, and withstands extraordinarily high temperatures.
Calcined BFA: Heating to 1050°C greatly improves the purity, toughness, strength, and wear-resistance of abrasives. Primary application: vitrified grinding wheels.
Blue-Fired BFA: While turning grain-color dark blue, firing at 1350°C achieves far greater toughness and strength, much lower iron content, a very low coefficient of thermal expansion, and excellent hydrophilicity, all of which increase grinding performance and accuracy. Primary applications: coated abrasives (paper, cloth and belts) and heavy-duty grinding wheels.
Ceramic-Coated BFA: Ceramic coating improves purity and hydrophilicity, reduces dust, and achieves grain surfaces that have greater toughness, strength, and roughness, and that are also more uniform in particle size. Primary applications: coated and bonded abrasives.
Ceramic-Coated Blue-Fired BFA: These grains deliver all of the advantages of both Ceramic-Coated and Blue-Fired BFA. Primary application: coated and bonded abrasives, especially those for use on hardened steel and other high-carbide materials.
Brown Aluminum Oxide (Abrasive):
Brown Fused Alumina (refractory):
Abrasive: F12 to F220; P12 to P220; #240 to #4000
Refractory (mm): 0-0.5, 0-1, 1-3, 3-5, 5-8, 0-10, 0-25, 0-30
Refractory (Mesh): -100, -200, -325
55-lb bags; 2,200-lb SuperSacks
Abrasive: Bonded and coated abrasives, surface preparation, flooring
Refractory: Shaped and unshaped refractories, fireproof products and linings