Reactive Alumina HA150 Micro-Powder with Low Alkali Content, Multimodal Particle Packing, and BET 3.8 m²/g Surface Area

HUAO Reactive Alumina HA150 is a sub-micron reactive micro-powder developed specifically to address challenging rheology and sintering requirements in high-performance refractories and structural ceramics. Produced in our ISO 9001, ISO 14001, and ISO 45001 certified manufacturing plant, HA150 has an engineered multimodal particle size distribution.

This specific grain configuration combines a median D50 of 1.5 μm with a specific surface area (BET) of 3.8 m²/g. By keeping typical alkali content (Na₂O) down to 0.08% (Max 0.12%) and silica (SiO₂) to 0.03%, HUAO provides reliable batch processing components for refractory material formula designers and ceramic engineers, supporting high packing density, reducing water consumption during the mixing process, and resisting high-temperature structural degradation.

Technical Parameters

Key Features

• Multimodal Particle Packing: The multi-modal size distribution in engineering design fills the micropores between larger aggregate particles, achieving high green density before firing.
• Strict Low-Soda Control: Maintaining a low alkali profile (Na₂O typical 0.08%, max 0.12%) protects against unwanted glass phase formation at elevated operating temperatures.
• Balanced Surface Activity: A controlled BET surface area of 3.8 m²/g (3.0-4.5 m²/g range) provides dependable thermal sintering activity without causing early slurry thickening.
• Precise Sub-Micron Grading: Laser Cilas monitoring ensures a consistent median size of 1.5 μm (1.2-1.8 μm range) and D90 ≤ 6.0 μm, supporting stable batch processing.

Applications

Low-Cement & Ultra-Low Cement Castables: Used as a core matrix filler and binder in low cement (LCC) and ultra-low cement (ULCC) castables, allowing installers to achieve appropriate mud workability while maintaining low water addition.

Advanced Technical Ceramics: As a reliable raw material for dense wear-resistant plates, structural ceramic shapes, and mechanical seals that require low sintering voids and reliable dimensional stability.

Wear-Resistant & Refractory Linings: Combined with formed bricks and furnace lining compositions to increase the thermal modulus of rupture (HMOR) and protect equipment from corrosive chemical attack.

Why Choose HUAO

Real-World Processing Value: We design HA150 with a focus on practical plant conditions. The multimodal grading helps reduce mixing liquid demand, saving drying time and lowering energy consumption during initial burnout cycles.

Traceable Quality Standards: Each batch of goods comes directly from our ISO certified factory. Automatic particle size determination and strict chemical screening can prevent batch changes from interfering with your daily production operations.

Direct Technical Support & Supply: As both manufacturer, HUAO works closely with your engineering team to ensure stable deliveries and direct technical assistance for formulation adjustments.

Customization

Huawei offers customized packaging options to protect product quality during overseas transportation. The options include multi walled 25kg paper bags, moisture resistant 1000kg bulk bags, and sturdy export pallets to meet your factory unloading requirements.

FAQ

We also provide other alumina products. If you would like to learn more about Calcined Alumina, please click here.