Zirconia Fused Aluminum Oxide Grain F220 For Refractory Bricks
Zirconia Fused Aluminum Oxide ZA25 & ZA40 For Making Coated Abrasives Products
Zirconia Fused Alumina Introduction
Zirconia Fused Alumina is produced by fusing natural zirconium, bauxite, complex solubilizer in electric arc furnace under more than 2650℃ high temperature, and crystalized by rapid cooling with special technology. It is characterized by tenacious texture, compact microcrystalline structure, high strength and good thermophysical properties. It is widely used in manufacturing high quality abrasive and grinding tools and refractory products.
Zirconia Fused Alumina Characteristics
Refractory / Fireproof
Zirconia Fused Alumina contains Zirconium Oxide(ZrO2) and Aluminium Oxide(Al2O3) which are important chemical contents for refractory performance. Ideal material for refractory bricks.
High Strength
Zirconia Fused Alumina has high hardness and strength(about 400N). It’s one of the most hard and strong artificial corundum.
Sharp Grain
Like other corundum, grains of ZA is sharp edged material ideal for cutting, lapping, polishing etc of metal surface.
High Density
Zirconia Fused Alumina has true gravity of about 4.3g/cm3, compared to about 3.9g/cm3 of Brown Fused Alumina and 3.6g/cm3 of White Fused Alumina. And bulk density about 2.2g/cm3 which is also much higher than other corundum. It’s used for heavy duty bonded abrasive products.
Chemical Composition(%)
| Items | Al2O3 | ZrO2 | TiO2 | Fe2O3 | SiO2 |
| ZA25 | 68-72 | 24-30 | ≤1.5 | ≤0.5 | ≤1.0 |
| ZA40 | 55-57 | 35-44 | ≤1.5 | ≤0.5 | ≤1.0 |
Physical Properties
| Crystal Form | Monoclinic,tetragonal system |
| Reaction with acid and alkali | no |
| Reaction with carbon | Forming carbide since 1650℃ |
| Color | Grey |
| True Density | 4.20g/cm3 |
| Bulk Density | 2.18g/cm3 |
| Moh's hardness | 9.0 |
| Knoop hardness | 1450-2000kg/cm2 |
| Melting point | 1900℃ |
| Maximum service temperature | 1700℃ |
| Specific heat capacity(cal/g.℃) | 0.2205(50-500℃) |
| Heat conductivity | 0.2718 cal/cm2.sec.℃ |
| Linear expansivity(X10-6) | 6.82(100-700℃) |
Main Applications
1.Making zircon fused alumina brick and building materials
2.Used for making bonded abrasives products,and process of grinding,sandblasting,surface treatment of metal products and other materials.
3.With good melt erosion resistance,Zirconia fused alumina has good grinding effect on steel,iron casting,heat resistant steel and other alloy materials.
4.Zirconia fused alumina can be made for heavy duty Zirconia fused alumina grinding wheel,snagging,cutting disc,Fiber disc,grinding rails,high speed abrasive belts etc
5.Used for making coated abrasives products,
6.Used for making lapping paste,polishing wax,emery cloth,sandpaper etc
Available Sizes
0-0.5mm 0.5-1mm. 1-1.5mm 1-2mm 1-3mm 3-5mm 5-8mm etc
100F 200F 325F
F4 F5 F6 F7 F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220
Package:
a. in 25kg plastic woven bags.
b. In 1000kg big bag.
c. 40 x 25kg plastic woven bags in one big bag.
d. 40 x 25kg plastic woven bags on pallet.
e. 40 x 25kg paper bags on pallet.
f. According to client’s special requirement
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