Buy Low Cost high Quality Bottom Pouring Refractory Bricks are manufactured with various types of base raw materials to achieve the high performance, high application service temperature requirement, ensure very smooth casting, and cost reduction objectives. These bricks are produced and available in three different types of materials: low cost fire clay, high alumina, and andalusite base materials.
 
Item 
Unit 
Fire clay
 
High Alumina
 
Andalusite
 
 
WBP40
WBP30
WBP48
WBP55
WBP65
WBPA57
Al2O3
%
40
 
≥48
≥55
≥65
≥57
Fe2O3
%
2 - 2.5
2 - 2.5
 
 
 
≤2.0
SiO2
%
65
58
 
 
 
 
Apparent Porosity
%
30
30
≤25
≤26
≤26
≤25
Bulk Density 
g/cm3
2
2
≥2.15
≥2.20
≥2.30
≥2.30
Service Temperature
ºC
1450
1400
1500
1600
1600
1600
Permanent Linear Change 
 
1350 ºC×5h
1350 ºC×5h
1450 ºC×2h
1450 ºC×2h
1500 ºC×2h
 
%
1
1
0.1~-0.4
±0.3
±0.3