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Kumthai Abrasives Co., Ltd.

Brown Fused Alumina, Aluminium Oxide, Sand Blasting manufacturer / supplier in China, offering High Quality Brown Fused Alumina (A / A-B / A-P / A-R), Sandblast Boron Carbide Nozzle (B4C) for Machines′ Cleaning and Blasting, Boron Carbide Nozzle (SBCN-be used with blast hose) and so on.

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Supplier Homepage Product Brown Fused Alumina (A) High Quality Brown Fused Alumina (A / A-B / A-P / A-R)

High Quality Brown Fused Alumina (A / A-B / A-P / A-R)

FOB Price: US $250-750 / Ton
Min. Order: 1 Ton
Min. Order FOB Price
1 Ton US $250-750/ Ton
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Port: Qingdao, China
Production Capacity: 10000tons / Month
Payment Terms: L/C, T/T, D/P

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Basic Info
  • Model NO.: A / A-B / A-P / A-R
  • Artificial Abrasive Type: Corundum Abrasives
  • Function: Surface Finish
  • Particle Size: Mill
  • Crystal Color: Brown
  • Crystal System: Hexagonal
  • Density: More Than 3.90g/cm3
  • Usage: Polishing, Grind, Sand Blasting, Refractory
  • Transport Package: 25kg P.P Bag + Jumbo Bag, 25kg Paper Bag +Pallet.
  • Origin: Zhengzhou, China
  • Natural Abrasive Type: Natural Corundum
  • Application: Machinery
  • Source: Artificial Abrasives
  • Hardness: Conventional Abrasive
  • Basic Mineral: Alpha- Al2O3
  • Mohs Hardness: 9
  • Micro Hardness: Hv1800-2200 .
  • Trademark: kumthai
  • Specification: F8-F1200, P12-P2500, 0-1mm, 1-3mm,3-5mm,5-8mm, etc
  • HS Code: 2818101000
Product Description
Brown fused alumina (A) is produced by fusion of bauxite in an electric arc furnace at high temperatures. The brownish coloured product shows high hardness as well as extreme toughness. The materials are used to grind metals of high-tensile strength such as steel, annealed malleable iron and hard bronze. It can also be used as high-class refractory.
 
Grain Usages and Types 
UsageFor vitrified wheelsFor organic wheelsFor coated abrasivesFor refractory materials
TypeAA-BA-PA-R
 
 
Physical Characteristics
ItemBasic mineralCrystal systemCrystal colorMohs 
hardness
Density
Brown aluminium oxideα- Al2O3HexagonalBrown93.90g/cm3
ItemMicro hardnessElectrical 
resistivity
Grinding ability(compared with
 diamond as one)
Linear expansion 
coefficient(when 900
ºC α•10-6k-1)
Brown aluminium oxideHV1800-22001014-1016Ω•cm0.107.6
 
 
Chemical Composition
GB/T 2478-2008
TypeGritChemical Composition(%, by weight)
Al2O3TiO2CaOSiO2Fe2O3
AF4-F8095.00-97.501.70-3.400.421.000.30
F90-F15094.50-97.00
F180-F22094.00-97.001.70-3.600.451.000.30
F230-F80093.501.70-3.800.451.200.30
F1000-F120093.004.000.501.400.30
A-BF4-F8094.001.50-3.800.451.200.30
F90-F22093.001.50-4.000.501.400.30
F230-F80092.54.200.601.600.30
F1000-F120092.004.200.601.800.30
A-PP12-P8095.00-97.501.70-3.400.421.000.30
P100-P15094.50-97.00
P180-P22094.00-97.001.70-3.600.451.000.30
P240-P80093.501.70-3.800.451.200.30
P1000-P120093.004.000.501.400.30
P1500-P250092.504.200.551.600.30
A-R0-1mm94.00-97.501.50-3.800.451.400.30
1-3mm94.00-97.501.50-3.800.451.400.30
3-5mm94.00-97.501.50-3.800.451.400.30
5-8mm94.00-97.501.50-3.800.451.400.30
Note: Special requirement on chemical composition can be satisfied through discussion.

 
Guarnteed bulk density range of coarse grains(A / A-B, g/cm3)
GritGrade
Roll CrushingBall MillBMK
F121.84±0.051.92±0.052.00±0.05
F141.83±0.051.91±0.051.99±0.05
F161.81±0.051.90±0.051.98±0.05
F201.78±0.051.87±0.051.98±0.05
F221.76±0.051.85±0.051.96±0.05
F241.74±0.051.84±0.051.94±0.05
F301.72±0.051.81±0.051.90±0.05
F361.70±0.051.79±0.051.87±0.05
F401.68±0.051.76±0.051.85±0.05
F461.65±0.051.75±0.051.83±0.05
F541.63±0.051.73±0.051.81±0.05
F601.62±0.051.72±0.051.79±0.05
F701.60±0.051.69±0.051.78±0.05
F801.57±0.051.65±0.051.76±0.05
F901.54±0.051.64±0.051.74±0.05
F1001.51±0.051.60±0.051.70±0.05
F1201.49±0.051.59±0.051.68±0.05
F1501.47±0.051.57±0.051.65±0.05
F1801.45±0.051.56±0.051.61±0.05
F2201.43±0.051.53±0.051.59±0.05
Note: Special requirement on bulk density can be satisfied through discussion.

 
Guarnteed bulk density range of coarse grains(A-P, g/cm3)
GritGrade
Roll CrushingBall MillBMK
P121.80±0.051.88±0.051.96±0.05
P161.78±0.051.85±0.051.94±0.05
P201.76±0.051.83±0.051.93±0.05
P241.73±0.051.81±0.051.92±0.05
P301.70±0.051.79±0.051.90±0.05
P361.68±0.051.76±0.051.88±0.05
P401.65±0.051.73±0.051.86±0.05
P501.62±0.051.71±0.051.83±0.05
P601.59±0.051.67±0.051.81±0.05
P801.57±0.051.64±0.051.77±0.05
P1001.55±0.051.62±0.051.73±0.05
P1201.52±0.051.59±0.051.70±0.05
P1501.49±0.051.55±0.051.66±0.05
P1801.47±0.051.52±0.051.62±0.05
P2201.45±0.051.50±0.051.58±0.05
Note: Special requirement on bulk density can be satisfied through discussion.
 
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