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.
| Al₂O₃ Content | ≥48% |
|---|---|
| Max. Service Temp. | 1500℃ |
| Bulk Density | 0.8-1.2 g/cm³ |
| Thermal Conductivity | ≤0.5 W/(m·K) |
Lightweight high-alumina insulating bricks are fired from high-alumina lightweight raw materials: Al₂O₃ ≥48%, max service 1500℃, bulk density 0.8-1.2 g/cm³ and thermal conductivity ≤0.5 W/(m·K) at 800℃. Light, low-conductivity and energy-saving, they serve as backup insulation behind hot working linings. It is Henan Songrui's professional insulation grade.
Use as backup insulation behind dense working linings, never in direct slag/flame contact; lay in layers with dense linings for "dense face + light backup" combinations.
Lay with lightweight insulating mortar, tight joints; ensure stable bonding between backup and working layers.
Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation, contact Manager Zheng (17513376789 / 17513376789@163.com).
Lightweight high-alumina insulating brick for furnace insulation:
Density 0.8-1.0 g/cm³, service up to 1400℃, low thermal conductivity.
Boiler walls, reheating furnace insulation, cell insulation to cut heat loss.
Low strength limits it to insulation; use dense bricks for flame-facing working layers.
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