Product Description:
Reactive Alumina (Activated High Alumina Micro-Powder) is a high-purity, reactive matrix filler engineered for advanced refractory castables and technical ceramics. Characterized by high alpha-alumina transformation and optimized particle size distribution, it fills micro-voids between aggregate grains, drastically reducing mixing water demand in unshaped castable systems.
In applications such as steel ladle castables, blast furnace iron runners, porous purging plugs, seating blocks, corundum self-flowing castables, and spray coatings, it promotes rapid solid-state sintering. This structural densification significantly maximizes cold/hot mechanical strength, thermal shock resistance, and molten slag erosion endurance under extreme operating conditions.
Technical Parameters:
| Features/Methods |
Unit |
HA600 Typical |
HA600 Min |
HA600 Max |
| Na₂O |
% |
0.08 |
|
0.10 |
| Fe₂O₃ |
% |
0.02 |
|
0.04 |
| MgO |
% |
0.05 |
|
|
| SiO₂ |
% |
0.03 |
|
0.08 |
| CaO |
% |
0.02 |
|
|
| Surface area/BET |
m²/g |
7.2 |
6.0 |
9.5 |
| D50 Cilas |
μm |
0.6 |
0.4 |
0.8 |
| D90 Cilas |
μm |
3.0 |
|
4.0 |
| Particle distribution |
|
singlet |
|
|
Applications:
HUAO Reactive Alumina (Zibo, Shandong) is an ISO9001, ISO14001, and ISO45001 certified micro-powder engineered for high-performance refractories and technical ceramics. Featuring high alpha-phase purity, tailored micro-particle sizing, and superior sintering reactivity, it optimizes matrix packing density and minimizes mixing water demand.
It is essential for manufacturing steel ladle castables, blast furnace iron runners, porous purging plugs, seating blocks, corundum self-flowing castables, and spray coatings. By filling interparticle micro-voids, HUAO Reactive Alumina significantly boosts cold/hot mechanical strength, thermal shock endurance, and molten slag erosion resistance.
Customization:
We offer fully customizable particle sizes, custom powder formulations, and flexible packaging (25kg bags, 1,250kg bulk, Jumbo BB) tailored to your exact specifications.
FAQ:
Q1: What is HUAO Reactive Alumina (Activated High Alumina Powder) used for?
A1: HUAO Reactive Alumina is primarily used as a critical matrix filler and sintering promoter in high-performance unshaped refractories. It is widely applied in manufacturing steel ladle castables, blast furnace iron runner castables, porous purging plugs, seating blocks, corundum self-flowing castables, and spray coatings.
Q2: Where is HUAO Reactive Alumina manufactured?
A2: HUAO Reactive Alumina is manufactured at our production facility in Zibo, Shandong, China.
Q3: Does HUAO Reactive Alumina hold international quality certifications?
A3: Yes. Our facility is certified under ISO9001 (Quality Management System), ISO14001 (Environmental Management), and ISO45001 (Occupational Health and Safety).
Q4: Can particle sizes and packaging options be customized?
A4: Yes. We provide fully customizable particle size distributions (D50) and powder formulations to match your refractory recipes. Standard packaging includes 25kg bags, 1,250kg bulk bags, Jumbo BB bags, or tailored packaging per client specifications.
Q5: What are the payment terms for purchasing HUAO Reactive Alumina?
A5: We offer flexible payment options, including 100% T/T in advance or 30% T/T in advance with the balance settled before delivery.
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