Product Description

HUAO Tabular Alumina is a premium-grade pure sintered corundum manufactured completely free of sintering additives such as MgO or B₂O₃. Produced through a specialized route of fine powder milling, roll compaction, and ultra-high temperature firing, the material achieves complete thermal densification. The resulting microstructure consists of large, well-developed tabular alpha-alumina (α-Al₂O₃) crystalline grains with an Al₂O₃ purity exceeding 99.2%. Supplied as durable white granular aggregates and fine micro-powders, HUAO Tabular Alumina serves as an essential raw material for B2B manufacturers of high-performance monolithic refractories, continuous steel casting components, and severe-service industrial ceramic products.

Technical Parameters

Key Features

Produced without fluxing aids like MgO or B₂O₃, eliminating low-melting glass phases and preserving structural integrity under continuous extreme heat.

Ultra-high temperature sintering promotes the growth of well-developed tabular alpha-alumina crystals, conferring outstanding resistance to mechanical stress and thermal spalling.

Achieves a high bulk density of ≥ 3.5 g/cm³ with apparent porosity maintained at ≤ 5.0%, preventing molten steel and corrosive liquid slag from penetrating the matrix.

Maintains ultra-low silica (SiO₂ ≤ 0.09%) and iron oxide (Fe₂O₃ ≤ 0.02%) levels to ensure exceptional refractoriness under load and resistance to chemical erosion.

Controlled low moisture content (≤ 1.5%) guarantees stable binder hydration and consistent workability during refractory mixing.

Applications

Tabular Alumina can be used as the main aggregate and filler for low cement, ultra-low cement, and self flowing castables, for ladle, ladle lining, and iron runners. It can also be applied to the manufacturing of key functional fire-resistant components, such as sliding door panels, shields, blow plugs, and breathable bricks. It can also be used for firing brackets, high alumina crucibles, and industrial wear-resistant plates, as materials must have excellent structural strength and thermal cycling resistance in these areas.

Why Choose HUAO

Our factory's advanced rolling technology ensures uniform compaction of the green body and eliminates minor defects before ultra-high temperature firing. Provide customizable particle distribution, ranging from coarse aggregates to fine pore powders, optimizing packaging density and reducing water requirements in formulations. The ability to export directly ensures the stability of bulk supply, competitive pricing, and simplified international container logistics.

Customization

HUAO provides Tabular Alumina in customizable grain sizes (including standard aggregate fractions and fine micro-powders) tailored to your specific recipe requirements. Packaging options include 25kg multi-wall woven bags and 1000kg/1250kg heavy-duty bulk jumbo bags with inner polyethylene moisture barriers, fully palletized and shrink-wrapped for maritime transport.

FAQ

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