Product Description:
HUAO Reactive Alumina is a high-purity, white alpha alumina engineered for high-performance refractory applications. It serves as a vital matrix component in steel ladle castables, iron ditch castables, breathable bricks, block bricks, corundum self-flowing castables, and spray coatings.By optimizing particle packing and reducing water demand, it enhances matrix fluidity and accelerates solid-state sintering. This structural densification delivers exceptional mechanical strength, thermal shock endurance, and severe slag erosion resistance in extreme high-temperature operating environments.
Technical Parameters:
| Features/Methods |
Unit |
HA250 Typical |
HA250 Min |
HA250 Max |
| Na₂O |
% |
0.10 |
|
0.14 |
| Fe₂O₃ |
% |
0.03 |
|
0.04 |
| MgO |
% |
0.01 |
|
|
| SiO₂ |
% |
0.03 |
|
0.07 |
| CaO |
% |
0.02 |
|
|
| Surface area/BET |
m²/g |
3.0 |
2.6 |
3.4 |
| D50 Cilas |
μm |
2.5 |
1.8 |
3.0 |
| D90 Cilas |
μm |
7.0 |
5.0 |
10.0 |
| Particle distribution |
|
doublet |
|
|
Applications:
HUAO Reactive Alumina is a high-purity, white alpha alumina engineered for high-performance refractory systems and advanced technical ceramics. Featuring low soda (Na2O <= 0.14%) and controlled impurity levels, it acts as a highly efficient matrix filler in refractory castables, iron runners, purging plugs, and spray coatings.By filling interparticle micro-voids, it minimizes mixing water demand and improves slurry fluidity. During high-temperature firing, it promotes rapid solid-state sintering, significantly boosting mechanical strength, thermal shock endurance, and resistance against severe molten slag erosion. Flexible packaging and customizable options are available to meet customer requirements.
Customization:
HUAO provides customizable Reactive Alumina micro-powder tailored for high-performance refractory applications, including ladle castables, iron ditch castables, breathable bricks, block bricks, corundum self-flowing castables, and spray coatings.Characterized by a pristine white appearance and controlled impurities (Fe2O3 <0.03%, CaO <0.03%), our alumina enhances matrix density, reduces water demand, and boosts high-temperature strength and slag resistance. We offer fully customizable particle sizes to meet specific technical requirements. Packaging options include 25kg bags, 1250kg bags, or Jumbo bags (BB). Flexible payment terms feature 100% T/T in advance or 30% T/T in advance with the balance paid before delivery.
FAQ:
1.Q: What is the packaging for Reactive Alumina?
A: It can be packed in 25kg bags, 1250kg big bags, or Jumbo (BB) bags according to the customer's requirement.
2.Q: What is the accepted payment method for Reactive Alumina?
A: We accept 100% payment in advance or 30% T/T in advance with the balance payment before delivery.
3.Q: What are the main applications of Reactive Alumina?
A: Reactive Alumina is mainly used as a high-performance matrix filler in refractory castables, steel ladle linings, blast furnace iron runners, porous purging plugs, seating blocks, and advanced ceramic products.
4.Q: How does Reactive Alumina improve refractory performance?
A: It optimizes particle packing density, lowers mixing water demand, improves matrix fluidity, and promotes solid-state sintering during firing. This results in higher mechanical strength, thermal shock resistance, and slag erosion resistance.
5.Q: What is the shelf life and storage requirement for Reactive Alumina?
A: The shelf life is typically 2 years when stored in a cool, dry place in its original sealed packaging to prevent moisture absorption and agglomeration.
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