RISING refractory brick products — Representative image of the product family · Refractory Bricks

Refractory BricksAlumina–silica and corundum bricks

Andalusite Brick

Low-impurity andalusite brick whose hot strength decreases very little, with strong thermal shock and slag resistance, high refractoriness under load and very high chemical stability. Grades RH135 to RH155.

Grades / types: RH155, RH150, RH145, RH140, RH135

Product overview

Andalusite brick has a low impurity content and its strength at high temperature decreases very little. It withstands rapid cooling and heating, has high mechanical strength, strong thermal shock resistance, strong slag resistance and a high refractoriness under load.

It also has very high chemical stability and strong resistance to chemical corrosion.

Key characteristics

Low impurity content
Very small loss of strength at high temperature
Resistance to rapid cooling and heating
High mechanical strength and strong thermal shock resistance
Strong slag resistance
High refractoriness under load and chemical stability

Technical data

Physical and chemical specification
Property	Unit	RH155	RH150	RH145	RH140	RH135
Al₂O₃	%	≥69	≥65	≥61	≥57	≥53
Fe₂O₃	%	≤1.0	≤1.0	≤1.2	≤1.2	≤1.5
TiO₂	%	≤0.5	≤0.5	≤0.5	≤0.6	≤0.6
Apparent Porosity	%	≤20	≤20	≤20	≤20	≤20
Bulk Density	g/cm³	2.55~2.70	2.50~2.65	2.45~2.60	2.40~2.55	2.35~2.50
Cold Crushing Strength (CCS)	MPa	≥55	≥55	≥50	≥50	≥40
Refractoriness Under Load, 0.2 MPa (RUL)	℃	≥1700	≥1700	≥1650	≥1600	≥1520
Permanent Linear Change (PLC)	%	±0.2 (1500℃×2h)	±0.2 (1500℃×2h)	±0.2 (1500℃×2h)	±0.2 (1450℃×2h)	±0.2 (1450℃×2h)
Creep Rate (0.2MPa 0~50h)	%	≤0.8 (1550℃)	≤0.8 (1500℃)	≤0.8 (1450℃)	≤0.8 (1400℃)	≤0.8 (1350℃)