mullite fire brick glass funace lining

General index

Item  Mullite Bricks
RF-70 High-purity Mullite Bricks 
RF-75
Max Service Temperature  °C  1600 1650 
 Al2o3,
 % ≥  70 75 
 SIO2,
% ≤  25 23 
 Fe2o3,
 % ≤  0.5 0.5 
 Bulb density,
g/cm3  ≥ 2.65 2.7
 Apparent porosity,

%  ≤  17  17
 Cold crushing strength, Mpa ≥  90 100 
 Refractoriness under load(0.2Mpa,0.6%),≥  1630 1700 





















Technical data of corundum mullite bricks for your reference

Size : 230x114x64mm
Specifications: The alumina content,density,size of the products can be customized according to your request.



Item High purity corundum bricks
DL-98 Normal 
corundum 
bricks
DL-95 Corundum 
mullite
bricks
DL-90 Corundum 
mullite
bricks
DL-80
Mullite
bricks
DL-75 Mullite
Bricks
DL-70
Al2O3％≥ 98.5 95 90 80 75 70
SiO2％≤ 0.3 3.0 9.0 18 23 25
Fe2O3％≤ 0.2 0.2 0.5 0.5 0.5 0.5
Bulk Density
(g/cm3 ≥) 3.0 2.9 2.9 2.7 2.7 2.65
Compressive
strength
at normal temperature
(MPa≥) 75 100 100 60 100 90
Refractoriness
(°C≥) 1790 1790 1790 1760 1700 1650
Linear Change(%)1600°C x3h ±0.2 ±0.2 ±0.2 ±0.3 ±0.3 ±0.3