Product Description

HA180 Reactive Alumina Powder is a high-purity α - Al₂O₃ material designed specifically for high-performance refractory castables and special thermal applications. HA180 has a singlet particle size distribution with a median particle size D50 of 1.8 μm and a BET surface area of 2.1 m²/g. Its formula can maintain low chemical impurities (Na₂O ≤ 0.20%, Fe₂O₃ ≤ 0.05%, SiO₂ ≤ 0.08%) By optimizing the particle packing density and reducing the demand for mixed water, HA180 enhances the fluidity and rheology of the matrix, while accelerating solid-state sintering, providing excellent mechanical strength, excellent thermal shock resistance, and reliable slag erosion protection.

Technical Specifications

Note: Custom grain sizes can be prepared according to specific customer process requirements.

Key Features

• HA180 is designed with a uniform singlet particle distribution centered at D50=1.8 μ m, effectively filling the gaps between larger refractory aggregates, reducing water addition, and increasing high green density.
• The BET surface area of HA180 is 2.1 m ²/g (range 1.5-3.0 m ²/g), providing a balanced thermal reaction curve, accelerating solid-state sintering, while maintaining extended workability and rheological control during the mixing process.
• Low Na₂O, SiO₂, Fe₂O₃ prevent excessive formation of glass phase at high temperatures and maintain structural integrity under severe thermal loads.
• Enhances post-firing bulk density, cold crushing strength, and resistance to chemical erosion caused by molten steel and acidic/basic slag.

Applications

HUAO Reactive Alumina significantly enhances matrix density and structural stability, providing superior resistance against slag erosion, thermal shock, and severe wear under high-velocity metal flows. Engineered for demanding environments, it is widely utilized in porous purging plugs, seating blocks, and shrouds requiring dense microstructures. Furthermore, it delivers precise slurry viscosity control, smooth flowability, and rapid early-strength development in refractory formulations.

Why Choose HUAO

We have ISO 9001, ISO 14001, and ISO 45001 certification qualifications. With over 10 years of B2B export expertise, we are not only suppliers, but also the partner of our customers. We conduct chemical and particle size (Cilas) checks on each batch of goods to ensure consistency between batches. Integrated manufacturing capabilities provide reliable mass production capabilities and comprehensive technical support.

Customization

HUAO HA180 is packaged in standard 25 kg moisture-proof bags or heavy-duty 1000 kg / 1250 kg bulk jumbo bags (Ton Bags) with internal polyethylene liners. Grain size distributions and private-label packaging options can be tailored to client specifications.

FAQ

We also offer a complete line of high-purity alumina products. If you would like to explore our Tabular Alumina series, please contact our technical sales team.