Lightweight Fireclay Insulating Brick

Al₂O₃ Content	≥35%
Max. Service Temp.	1250℃
Bulk Density	0.6-1.0 g/cm³
Thermal Conductivity	≤0.35 W/(m·K)

Description

Lightweight Fireclay Insulating Brick

Economical lightweight fireclay insulating brick for boiler and duct insulation.

Key Features

Typical Applications

For detailed technical data, quotation or installation guidance on Lightweight Fireclay Insulating Brick, please contact Manager Zheng (17513376789 / 17513376789@163.com). Free selection advice and technical support are provided.

Key Features

Economical
Good insulation performance
Boilers, flues and kiln insulation

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.