High-Alumina Brick LZ-55

Al₂O₃ Content	≥55%
Refractoriness	≥1770℃
Bulk Density	≥2.30 g/cm³
CCS	≥60 MPa
RUL (0.2MPa)	≥1470℃
Apparent Porosity	≤22%

Description

High-Alumina Brick LZ-55

High-alumina brick (Al₂O₃≥55%) for blast furnaces, hot blast stoves and EAF roofs.

Key Features

Typical Applications

For detailed technical data, quotation or installation guidance on High-Alumina Brick LZ-55, please contact Manager Zheng (17513376789 / 17513376789@163.com). Free selection advice and technical support are provided.

Key Features

High strength and wear resistance
Wide application range
Special-shape processing available

FAQs

How are refractory bricks classified by material?

By material: fireclay, high-alumina, silica, magnesia (MgO, MgO-C, magnesia-spinel etc.), corundum, mullite, silicon carbide and special bricks like fused-cast AZS. Each grade has different temperature ratings and erosion resistance — selection depends on furnace type, temperature and media.

Can special-shaped bricks be made per our drawings?

Yes. With professional mold design and forming capability, we make custom special-shaped bricks in alumina, fireclay, mullite and corundum grades with ±1mm tolerance, supporting small trial runs and mass production. Drawings or samples are welcome.

What are refractory precasts and what is the lead time?

Refractory precasts are pre-formed components cast from monolithic refractories per furnace drawings, lifted and assembled on site for fast, reliable relines. Typical lead time is 7-15 days including curing and pre-firing; complex large items are assessed case by case.

How to choose between high-alumina and fireclay bricks?

Fireclay bricks (Al₂O₃≈40%) have good thermal shock resistance and economy, suitable below 1300℃ and for thermal cycling zones; high-alumina bricks (Al₂O₃ 55%-80%) serve above 1400℃ and load-bearing zones with higher strength. They are often combined by kiln zone.