Technical Parameters:

Applications:

HUAO Reactive Alumina is an ultra-fine alpha alumina micro-powder engineered for high-performance refractory systems and technical ceramics. Characterized by high purity and controlled impurity levels (Na2O <0.14%, Fe2O3 <0.04%), it acts as an essential matrix filler in steel ladle castables, blast furnace iron runners, purging plugs, and corundum self-flowing castables.

By filling interparticle voids and reducing mixing water requirements, it improves slurry fluidity and accelerates high-temperature solid-state sintering. The resulting dense microstructure provides superior mechanical strength, excellent thermal shock resistance, and robust protection against molten slag erosion. Flexible packaging and customizable sizes are available.

Customization:

HUAO provides tailored Reactive Alumina micro-powder solutions for high-performance refractory applications, including steel ladle castables, iron ditch castables, porous purging plugs, seating blocks, and spray coatings.

Featuring high chemical purity, pristine white appearance, and low impurity levels (Na2O <0.14%, CaO <0.04%), our reactive alumina optimizes matrix density, reduces mixing water demand, and boosts high-temperature strength and slag resistance.

We offer fully customizable particle sizes alongside versatile packaging options, including 25kg bags, 1250kg big bags, or moisture-proof Jumbo bags. Orders are securely palletized and shipped via sea or air freight, supported by flexible T/T payment terms.

FAQ:

Q1: What are the main refractory applications for HUAO Reactive Alumina?

A1: HUAO Reactive Alumina is primarily used as a high-performance matrix filler in steel ladle castables, blast furnace iron runners, porous purging plugs, seating blocks, corundum self-flowing castables, and refractory spray coatings.

Q2: How does HUAO Reactive Alumina improve the quality of refractory castables?

A2: Its fine, controlled particle size fills micro-voids between larger grains, which significantly lowers mixing water demand, improves slurry fluidity, and promotes solid-state sintering during firing. This results in higher mechanical strength, better thermal shock resistance, and enhanced molten slag erosion resistance.

Q3: What packaging options, shelf life, and storage conditions are available?

A3: We supply 25kg paper/PE bags, 1250kg big bags, or moisture-proof Jumbo (BB) bags with custom palletization. The shelf life is 2 years when stored in a cool, dry, unopened package to prevent moisture absorption and agglomeration.