Brief introduction of Zirconia corundum/zirconia fused alumina
Zirconia corundum was made from aluminum and Zirconium oxide by melting above 2000 in the electric arc furnace and cooling.Then the huge Zirconia corundum lump be crushed into different size,from a few mm to 0.8 um.
Zirconia corundum is strong but pliable in texture,compact structure,Good Thermal Stability.
Generally Zirconia corundum is gray color.
Zirconia corundum/fused alumina chemical & physical properties
| Zirconia corundum’s physical properties | |
| Crystal form | Monoclinic, tetragonal system |
| Crystal size | 30um max |
| Reaction with acid and alkali | No |
| Reaction with carbon | Forming carbide since 1650 °C |
| Color | Gray |
| True density | 4.20g/cm3 |
| Bulk density | 2.18g/cm3 |
| Moh’s hardness | 9.0 |
| Knoop hardness | 1450-2000kg/cm2 |
| Meltingpoint | 1900°C |
| Maximumservicetemperature | 1700°C |
| Specific heat capacity(cal/g. °C) | 0.2205(50-500°C) |
| Heat conductivity | 0.2718 cal/cm2.sec. °C |
| Linear expansivity(X10-6) | 6.82(100-700°C) |
| Zirconia corundum’s chemical properties | |||||
| product | Al2O3 | ZrO2 | TiO2 | Fe2O3 | SiO2 |
| ZA25 | 68%-72% | 24%-30% | 1.5%max | 0.5%max | 1.0%max |
| ZA40 | 55%-57% | 35%-44% | 1.5%max | 0.5%max | 1.0%max |
Tips:Based on the purity of ZrO2,Zirconia corundum be classified into two series of complete size,ZA25 and ZA40
Zirconia corundum’s size &Application
Size:
Section sand:0-1mm,1-3mm, 3-5mm,5-8mm,etc.
Fine powder:100f,200f,325f ,etc.
Customized size is available
Application of zirconia fused alumina
Generally speaking,Top refractory raw material for Zirconia corundum refractory products
As high-class refractory materials,Zirconia corundum is perfect for making slide gate nozzle and submersed nozzle.
Zirconia corundum is also for making zircon corundum brick and building materials.
2.F-grit sizes bonded
size: F 8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#
Application
1, Generally speaking,Zirconia corundum was used for making bonded abrasives products,and process of grinding,sandblasting,surface treatment of metal products and other material.
2, With good melt erosion resistance, Zirconia corundum has good grinding effect on steel,iron casting,heat-resistant steel, and other alloymaterials.
3, Zirconia corundum can be made for Heavy duty Zirconia corundum grinding wheel,snagging, Zirconia corundum cutting disc, Zirconia corundum fiber disc,grinding rails, high-speed Zirconia corundum abrasive belt,etc.
3.F-grit sizes-coated
FEPA size:F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F200
JIS size:240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000#
Application
1, Generally speaking,Zirconia corundum was used for making coated abrasives products.
2, Zirconia corundum micron powder are mainly for making lapping Paste, polishing wax, Zirconia corundum emery cloth, Zirconia corundum sandpaper,etc.
