High Temperature Treated BFA

High temperature calcined brown fused alumina is formed by high temperature and medium temperature calcined abrasives in the production process of raw brown fused alumina, and then annealed.

Description of High Temperature Treated BFA

Bulk Density of Brown Fused Alumina

Grit Bulk density (g/cm3) Grit Bulk density (g/cm3)

F12 1.84-1.98 F54 1.69-1.83

F14 1.84-1.98 F60 1.66-1.80

F16 1.83-1.97 F70 1.66-1.80

F20 1.81-1.95 F80 1.62-1.76

F22 1.80-1.94 F90 1.60-1.74

F24 1.80-1.94 F100 1.57-1.71

F30 1.78-1.92 F120 1.54-1.68

F36 1.76-1.90 F150 1.52-1.66

F40 1.73-1.87 F180 1.50-1.64

F46 1.71-1.85 F220 1.48-1.62

Particle Size Distribution of Brown Fused Alumina (P12-P220) for Coated Abrasives

Grit Particles Sizes Distribution Magnetic Materials Content (%)

Special Coarse Size Most Coarse Size Coarse Size Basic Size Blend Size Fine Size

P12 6# 8# 12 45 85 / 0.0082

0 ≤1 11 46 83 / 0.0093

P16 8# 12#

0 ≤3

P20 12# 16#

0 ≤7

P24 14# 18#

0 ≤1

P30 16# 20#

0 ≤1

P36 18# 25#

0 ≤1

P40 25# 35#

0 ≤7

P50 30# 40#

0 ≤3

P60 35# 45#

0 ≤1

P80 45# 60#

0 ≤3

P100 50# 70#

0 ≤1

P120 70# 100#

0 ≤7

P150 80# 120#

0 ≤3

P180 100# 140#

0 ≤2

P220 120# 170#

0 ≤2

Typical Physical Properties of High Temperature Treated BFA

01.

Eliminate Abnormal Expansion

Calcination of brown fused alumina will produce abnormal expansion, which will lead to grid cracks on its surface, while calcination can eliminate abnormal expansion and reduce the formation of waste.

02.

Improve Toughness And Grinding Performance

The calcined brown fused aluminium oxide has a hard reaction inside, the compressive strength is enhanced, and the durability and sharpness are greatly improved.

03.

Improve Hydrophilicity

The hydrophilic performance of the calcined brown fused alumina is more than doubled.

04.

Improve Strength of Abrasive Tool

The specific surface area of the brown fused alumina particles after high temperature calcination is greatly increased, so the abrasive and the cloth base are much stronger.

05.

Improved Durability

The durability of calcined brown fused alumina is more than 40% higher than that of ordinary brown fused alumina.

06.

Improve Appearance And Cutting Ability

After the brown fused alumina is calcined, the magnetic substance inside is reduced, reducing the probability of rust spots on the surface.

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