White Corundum Aluminium Oxide Fused Alumina for Sandblasting Refractory Abrasives

• Customization: Available
• Feature: Long Time Materials
• Refractoriness (℃): Refractoriness> 2000
• Model NO.: F8-F1200, P12-P2500, 0-1mm, 1-3mm,3-5mm,5-8mm, etc
• Crystal Color: White
• Basic Mineral: Alpha- Al2O3
• Crystal System: Hexagonal
• Mohs Hardness: 9
• Density: More Than 3.90g/cm3.
• Micro Hardness: Hv2200-2300
• Usage: Polishing, Grind, Sand Blasting, Refractory.
• Natural Abrasive Type: Natural Corundum
• Artificial Abrasive Type: Corundum Abrasives
• Transport Package: 25kg P. P Bag+1mt Jumbo Bag, 25kg Paper Bag+Pallet
• Specification: F8-F1200, P12-P2500, 0-1mm, 1-3mm,3-5mm,5-8mm, etc
• Trademark: kumthai
• Origin: Zhengzhou, China
• HS Code: 2818109000
• Production Capacity: 10000tons / Month

Product Description

White Corundum Aluminium Oxide Fused Alumina for Sandblasting Refractory Abrasives
 

White fused alumina is produced by bayer alumina in an electric arc furnace at high temperatures. The product shows higher hardness and lower toughness than that of brown aluminium oxide. The materials are used to grind high carbon steel, high speed steel and chilled steel. It can also be used as polishing materials and precision founding sand, spraying and coating materials, catalyst carrier, special ceramics and super refractory materials.

 

Grain Usages and Types
Usage	For vitrified wheels	For organic wheels	For coated abrasives	For refractory materials
Type	WA	WA-B	WA-P	WA-R

 

Physical Characteristics
Item	Basic mineral	Crystal system	Crystal color	Mohs  hardness	Density
White aluminum oxide	α- Al2O3	Hexagonal	White	9	≥3.90g/cm^3
Item	Micro hardness	Electrical  resistivity	Grinding ability(compared with  diamond as one)		Linear expansion  coefficient(when 900ºC α•10^-6k^-1)
White aluminium oxide	HV2200-2300	10^14-10^16Ω•cm	0.12		8.3

 

Chemical Composition
GB/T 2479-2008
Type	Grit	Chemical composition (%, by weight)
		Al2O3	Na2O
WA	F4-F80	≥99.10	≤0.35
	F90-F150	≥99.10	≤0.40
	F180-F220	≥98.60	≤0.50
	F230-F800	≥98.30	≤0.60
	F1000-F1200	≥98.10	≤0.70
WA-B	F4-F80	≥99.00	≤0.50
	F90-F150	≥99.00	≤0.60
	F180-F220	≥98.50	≤0.60
WA-P	P12-P80	≥99.10	≤0.35 ≤0.40
	P100-P150	≥99.10
	P180-P220	≥98.60	≤0.50
	P240-P800	≥98.30	≤0.60
	P1000-P1200	≥98.10	≤0.70
	P1500-P2500	≥97.50	≤0.90
WA-R	0-1mm	≥99.00	≤0.50
	1-3mm	≥99.00	≤0.50
	3-5mm	≥99.00	≤0.50
	5-8mm	≥99.00	≤0.50

Note: Special requirements on chemical composition and other terms can be satisfied through discussion.

White Fused Alumina (WA)