Low-conductivity insulating bricks for back-up insulation to cut heat loss.
Insulating bricks have low porosity and conductivity, placed between the working lining and shell to cut heat loss and shell temperature. Grades span 1000–1500℃, laid in combination with working bricks for clear energy savings.
5 products
Light mullite insulating brick takes mullite as its main phase with Al₂O₃ of 50%–85%, featuring low thermal conductivity, low bulk density and good high-temperature structural strength for insulating and composite linings of ceramic kilns, glass furnaces and reheating furnaces.
Alumina bubble brick is made from fused alumina bubbles with high-purity alumina matrix, serving at 1600-1800°C with low thermal conductivity, good strength and direct flame contact for high-temperature kiln insulating and working layers.
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.
Lightweight silica brick (SiO₂≥92%, 1550℃ max, bulk density 1.2-1.5 g/cm³, RUL ≥1550℃) combines silica refractoriness with lightweight insulation and matches silica brick thermal expansion.
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