Anti-Spalling High Alumina Bricks are premium refractory bricks specially engineered to resist thermal shock and alkali attack in high-temperature environments. These bricks are made from selected bauxite, fused alumina, and zirconium-containing additives, ensuring superior spalling resistance and excellent mechanical strength.

Designed for demanding industrial applications, such as cement kilns, RH refining furnaces, and regenerative chamber walls, these bricks provide enhanced durability, longer service life, and lower maintenance costs.

Technical Specifications

Specification	Typical Value
Al₂O₃ Content	≥ 70–80%
Bulk Density	2.45–2.60 g/cm³
Cold Crushing Strength	≥ 70–100 MPa
Thermal Shock Resistance	≥ 25 times (1100°C, water)
Refractoriness Under Load (RUL)	≥ 1450–1550°C
Permanent Linear Change (1500°C × 2h)	±0.2%

Key Features

Excellent Anti-Spalling Performance: Withstand repeated heating and cooling cycles without cracking or breaking.
High Refractoriness & Strength: Service temperature above 1400°C, with stable mechanical properties.
Resistance to Alkali and Slag Corrosion: Performs well in chemically aggressive environments like cement and lime kilns.
Low Thermal Conductivity: Helps reduce heat loss and improve energy efficiency.

Typical Applications

Anti-Spalling High Alumina Brick are widely used in:

Cement rotary kilns (transition and calcining zones)
Regenerative chamber checker bricks
Refining ladle linings (RH & DH furnaces)
Glass furnace structures
Lime kilns and incinerators

Production Details

Xintai Anti-Spalling High Alumina Bricks are manufactured using high-quality bauxite and fused alumina raw materials, combined with special additives to enhance thermal shock resistance. The raw materials are precisely crushed, mixed, and formed under high pressure using advanced hydraulic presses. After shaping, bricks undergo controlled drying and curing processes to achieve optimal mechanical strength and density without compromising their spalling resistance.

Packing and Shipping Details

Packaging:
Packed securely on fumigation-free wooden pallets with waterproof wrapping to prevent moisture and damage during transit.
Shipping:
Available worldwide via sea, air, or land transport. Flexible shipping terms such as FOB, CIF, and EXW supported. Typical lead time is 7–15 working days for standard orders.