Pure Sintered 0-3mm Tabular Alumina for Long Refractory Life

Product Description

HUAO 0-3mm Tabular Alumina is a premier, additive-free sintered corundum aggregate precisely crushed and graded to an optimal 0-3mm coarse fraction. Formulated with an Al₂O₃ content exceeding 99.2% and fully sintered at ultra-high temperatures, this specialized grain size delivers a dense, well-developed alpha-Al₂O₃ crystal network.

As the fundamental skeleton aggregate for high-performance refractory castables and pre-formed shapes, the 0-3mm fraction is engineered to maximize particle packing density, drastically reduce matrix porosity, and elevate high-temperature load-bearing performance in severe industrial environments.

Technical Parameters

Alternative particle size cuts can be precisely tailored and prepared according to customer requirements.

Key Features

• The composition does not contain MgO or other fluxing agents for sintering, in order to maintain high temperature refractoriness.
• α-Al₂O₃ provides good mechanical toughness and volume stability.
• Attains a bulk density of ≥ 3.50 g/cm³ and apparent porosity of ≤ 5.0%, effectively blocking aggressive fluid and slag penetration.

Advantages

• Maximized Castable Packing & Density: The 0-3mm particle size is an ideal coarse skeleton that can significantly increase the particle filling rate, thereby forming a denser and stronger refractory lining.
• Exceptional Resistance to Thermal Shock: The structure has excellent toughness and minimal dimensional changes after high-temperature firing, which can protect the furnace lining from thermal effects and cracking.
• Drastic Reduction in Water Demand: The low water absorption rate of 0-3mm aggregate results in a lower amount of mixed water added to the casting material, thereby improving the strength of cold crushing and thermal machinery.
• Superior Slag & Erosion Resistance: High chemical purity and low impurity limits (Fe₂O₃ ≤ 0.02%, SiO₂ ≤ 0.09%) provide strong defense against aggressive steelmaking slag and chemical corrosion.

Applications

As the main coarse skeleton aggregate in high-performance integral castables, magnesia carbon bricks, and other materials, a particle size of 0-3mm is crucial in the steel, casting, and cement industries. It constitutes the structural support of key refractory components, such as ladle lining, iron flow channels, sliding doors, and induction furnace working layers, extending the service life of equipment in harsh thermal environments.

Customization & Packaging

We offer bespoke particle size gradings and tailored fraction distributions to match your exact refractory formulation targets. Export consignments are safely packed in 25 kg small woven bags or heavy-duty 1000 kg, 1250 kg, and 1350 kg jumbo bags with internal polyethylene moisture barrier protection.

All pallets are constructed from treated wood and wrapped in protective stretch film to endure long-distance ocean transport. Neutral packaging, OEM brand marking, and bespoke bag specifications are fully supported.

FAQ

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