Xintai Special High Alumina Brick is a high-performance neutral refractory brick with approximately 85% Al₂O₃ content and excellent thermal properties. With a refractoriness above 1770°C, this brick demonstrates outstanding thermal shock resistance, corrosion resistance, and structural stability under extreme conditions.

Manufactured from high-quality bauxite or synthetic materials such as fused alumina, industrial alumina, and mullite, LZ-85 bricks are shaped and calcined through precise processes to ensure consistent quality and durability. They are widely used in regenerative chamber checker bricks of open-hearth furnaces, as well as in nozzle bricks and plugs for steel casting systems.

Technical Specifications

Property	Value
Brand	Xintai
Al₂O₃ Content	≥ 85%
Bulk Density	2.90–3.00 g/cm³
Cold Crushing Strength (CCS)	≥ 80 MPa
Refractoriness	≥ 1770°C
Thermal Shock Resistance	Excellent
High-Temperature Creep Resistance	Low creep at elevated temps
Apparent Porosity	18–22%
Standard Size	230 × 114 × 65 mm / Custom sizes available
Color	Buff / Pale yellow
Certification	ISO9001, ISO14001, ISO45001
Sample	Available on request

Key Features

High Refractoriness: Withstands temperatures over 1770°C.
Strong Thermal Stability: Resists cracking under repeated heating and cooling cycles.
Excellent Slag Resistance: Withstands acidic and basic slags, ideal for harsh environments.
Low High-Temperature Creep: Maintains structural integrity under load at high temps.
High Strength: Cold crushing strength ≥ 80 MPa for mechanical durability.
Stable Mineral Composition: Contains mullite and corundum phases, enhancing high-temp performance.

Typical Applications

Special High Alumina Bricks are suitable for:

Regenerative checker bricks in open-hearth furnaces
Plugs and nozzles in steel casting systems
Linings of electric arc furnaces, cement rotary kilns, and glass furnaces
Ladle linings and steel reheating furnaces
Areas requiring high strength and erosion resistance at high temperatures

Production Details

Special High Alumina Brick are made from selected high-alumina bauxite, synthetic mullite, and fused alumina. The raw materials are finely ground, proportioned, and shaped using high-pressure forming equipment. They are then fired at high temperatures in modern kilns to ensure excellent crystallinity and density. Based on application needs, we also produce T-shape bricks, G-shape bricks (for blast furnaces), and custom-shaped refractory components.

Packing and Shipping Details

Packaging: Wooden pallets with plastic film wrapping and edge protection
Load Capacity: Optimized palletization to minimize damage during transit
Shipping Options: FOB, CIF, EXW – by sea, land, or air depending on destination