
Lightweight High-Alumina Insulating Brick
Lightweight high-alumina insulating brick (Al₂O₃≥48%, 1500℃ max, bulk density 0.8-1.2 g/cm³, conductivity ≤0.5 W/(m·K)) saves energy with light weight and low thermal conductivity.
Wear-resistant and insulating refractory linings for CFB, pulverized coal and waste-to-energy boilers.
The key challenge in utility boiler linings is high-concentration solids erosion plus local over-temperature. The company supplies SiC wear-resistant and steel-fiber low-cement castables for CFB burner belts, cyclones and loop seals, plus lightweight insulating castables for PC boiler zones, recommending thickness and installation by boiler capacity and coal type.
Typical kilns in this industry — click each to see its specific problems and solutions
CFB boilers circulate bed material at high velocity; wear-resistant castables in the dense phase and cyclone linings are the main maintenance focus.
View Problems & Solutions →PC boilers expose burner zones to pulverized-coal impact and radiation; anchor design and spall resistance of linings are critical.
View Problems & Solutions →
Lightweight high-alumina insulating brick (Al₂O₃≥48%, 1500℃ max, bulk density 0.8-1.2 g/cm³, conductivity ≤0.5 W/(m·K)) saves energy with light weight and low thermal conductivity.

Lightweight fireclay insulating brick (Al₂O₃≥35%, 1250℃ max, bulk density 0.6-1.0 g/cm³, conductivity ≤0.35 W/(m·K)) is an economical, stable insulator.
Rotary activation furnaces, Shaft (Slep) furnaces and carbonization furnaces — with the refractory lining supplied and installed by the same team.
See activation furnaces →
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