China Brown Fused Alumina Bfa Aluminum Oxide with Reasonable Prices, Find details about China Brown Corundum, Aluminum Oxide from Brown Fused Alumina Bfa Aluminum Oxide with Reasonable Prices
Grain Usages and Types | ||||
Usage | For vitrified wheels | For organic wheels | For coated abrasives | For refractory materials |
Type | A | A-B | A-P | A-R |
Physical Characteristics | |||||
Item | Basic mineral | Crystal system | Crystal color | Mohs hardness | Density |
Brown aluminium oxide | α- Al2O3 | Hexagonal | Brown | 9 | ≥3.90g/cm3 |
Item | Micro hardness | Electrical resistivity | Grinding ability(compared with diamond as one) | Linear expansion coefficient(when 900ºC α•10-6k-1) | |
Brown aluminium oxide | HV1800-2200 | 1014-1016Ω•cm | 0.10 | 7.6 |
Chemical Composition | ||||||
GB/T 2478-2008 | ||||||
Type | Grit | Chemical Composition(%, by weight) | ||||
Al2O3 | TiO2 | CaO | SiO2 | Fe2O3 | ||
A | F4-F80 | 95.00-97.50 | 1.70-3.40 | ≤0.42 | ≤1.00 | ≤0.30 |
F90-F150 | 94.50-97.00 | |||||
F180-F220 | 94.00-97.00 | 1.70-3.60 | ≤0.45 | ≤1.00 | ≤0.30 | |
F230-F800 | ≥93.50 | 1.70-3.80 | ≤0.45 | ≤1.20 | ≤0.30 | |
F1000-F1200 | ≥93.00 | ≤4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
A-B | F4-F80 | ≥94.00 | 1.50-3.80 | ≤0.45 | ≤1.20 | ≤0.30 |
F90-F220 | ≥93.00 | 1.50-4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
F230-F800 | ≥92.5 | ≤4.20 | ≤0.60 | ≤1.60 | ≤0.30 | |
F1000-F1200 | ≥92.00 | ≤4.20 | ≤0.60 | ≤1.80 | ≤0.30 | |
A-P | P12-P80 | 95.00-97.50 | 1.70-3.40 | ≤0.42 | ≤1.00 | ≤0.30 |
P100-P150 | 94.50-97.00 | |||||
P180-P220 | 94.00-97.00 | 1.70-3.60 | ≤0.45 | ≤1.00 | ≤0.30 | |
P240-P800 | ≥93.50 | 1.70-3.80 | ≤0.45 | ≤1.20 | ≤0.30 | |
P1000-P1200 | ≥93.00 | ≤4.00 | ≤0.50 | ≤1.40 | ≤0.30 | |
P1500-P2500 | ≥92.50 | ≤4.20 | ≤0.55 | ≤1.60 | ≤0.30 | |
A-R | 0-1mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 |
1-3mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 | |
3-5mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 | |
5-8mm | 94.00-97.50 | 1.50-3.80 | ≤0.45 | ≤1.40 | ≤0.30 |
Guarnteed bulk density range of coarse grains(A / A-B, g/cm3) | |||
Grit | Grade | ||
Roll Crushing | Ball Mill | BMK | |
F12 | 1.84±0.05 | 1.92±0.05 | 2.00±0.05 |
F14 | 1.83±0.05 | 1.91±0.05 | 1.99±0.05 |
F16 | 1.81±0.05 | 1.90±0.05 | 1.98±0.05 |
F20 | 1.78±0.05 | 1.87±0.05 | 1.98±0.05 |
F22 | 1.76±0.05 | 1.85±0.05 | 1.96±0.05 |
F24 | 1.74±0.05 | 1.84±0.05 | 1.94±0.05 |
F30 | 1.72±0.05 | 1.81±0.05 | 1.90±0.05 |
F36 | 1.70±0.05 | 1.79±0.05 | 1.87±0.05 |
F40 | 1.68±0.05 | 1.76±0.05 | 1.85±0.05 |
F46 | 1.65±0.05 | 1.75±0.05 | 1.83±0.05 |
F54 | 1.63±0.05 | 1.73±0.05 | 1.81±0.05 |
F60 | 1.62±0.05 | 1.72±0.05 | 1.79±0.05 |
F70 | 1.60±0.05 | 1.69±0.05 | 1.78±0.05 |
F80 | 1.57±0.05 | 1.65±0.05 | 1.76±0.05 |
F90 | 1.54±0.05 | 1.64±0.05 | 1.74±0.05 |
F100 | 1.51±0.05 | 1.60±0.05 | 1.70±0.05 |
F120 | 1.49±0.05 | 1.59±0.05 | 1.68±0.05 |
F150 | 1.47±0.05 | 1.57±0.05 | 1.65±0.05 |
F180 | 1.45±0.05 | 1.56±0.05 | 1.61±0.05 |
F220 | 1.43±0.05 | 1.53±0.05 | 1.59±0.05 |
Guarnteed bulk density range of coarse grains(A-P, g/cm3) | |||
Grit | Grade | ||
Roll Crushing | Ball Mill | BMK | |
P12 | 1.80±0.05 | 1.88±0.05 | 1.96±0.05 |
P16 | 1.78±0.05 | 1.85±0.05 | 1.94±0.05 |
P20 | 1.76±0.05 | 1.83±0.05 | 1.93±0.05 |
P24 | 1.73±0.05 | 1.81±0.05 | 1.92±0.05 |
P30 | 1.70±0.05 | 1.79±0.05 | 1.90±0.05 |
P36 | 1.68±0.05 | 1.76±0.05 | 1.88±0.05 |
P40 | 1.65±0.05 | 1.73±0.05 | 1.86±0.05 |
P50 | 1.62±0.05 | 1.71±0.05 | 1.83±0.05 |
P60 | 1.59±0.05 | 1.67±0.05 | 1.81±0.05 |
P80 | 1.57±0.05 | 1.64±0.05 | 1.77±0.05 |
P100 | 1.55±0.05 | 1.62±0.05 | 1.73±0.05 |
P120 | 1.52±0.05 | 1.59±0.05 | 1.70±0.05 |
P150 | 1.49±0.05 | 1.55±0.05 | 1.66±0.05 |
P180 | 1.47±0.05 | 1.52±0.05 | 1.62±0.05 |
P220 | 1.45±0.05 | 1.50±0.05 | 1.58±0.05 |