calcined alumina is made by heat a source alumina at various temperature s,depending upon desired level of calcination(burn),into alpha alumina verying from 5-100% moving it to its densest and most stable form .The calcined alumina particles appear as crystalline agglomerates which are larger when the degree of calcination is higher .calcined alumina is generally used in the manufacture of refactory ,glass and enamel,tile and porcelains and ceramics,including electronic ceramics,etc.Aluchem's calcined family of products are available in ungraound and ground form and in various grades based upon:degree of calcination;soda content and partical size ditribution .
Typical properties of calcined alumina are:
High thermal conductivity
High level of refactoriness
Chemical inertness
Wear and abrasion resistance
Dimentional stability
High eletrical resistivity
High heat capacity
Specification
item |
impurity content≤(%) |
ΑL2O3≥(%) |
LOI≤ |
α- ΑL2O3
≥(%) |
True Density≥(g/cm3) |
| |
Nα2O |
SiO2 |
Fe2O3 |
|
|
|
|
| AT-A |
0.2 |
0.03 |
0.02 |
99.5 |
0.10 |
94 |
3.94 |
| AT-A |
0.3 |
0.04 |
0.03 |
99.3 |
0.10 |
93 |
3.93 |
| Particle Size (D50μm): it can be adjusted appropriately according to your needs |
FAQ
Q: Are you factory?
A: Yes, we are factory.
Q: How is your quality?
A: We have top grade production equipment and precision measuring instruments and we also have engineers and technicians carry out quality control.
Q: Can you supply free samples?
A: 1kgs free sample is available, but freight charges will be at your account, The charges will be return to you or deduct from your order in the future.
Q: What about the payment?
100% T/T in advance, 30% T/T in advance, the balance 70% against the B/L copy, Irrevocable L/C at sight
Q: The MOQ is?
A: MOQ is usually 1 ton, special products can be coordinuted with each other.
Q: Can I visit your factory?
A: Yes, we welcome you to visit our factory at anytime
Q: How about your delivery time?
A: Usually the shipment is within 15 days after confirming receipt of your payment, some products maybe need longer time.
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