China Common Alkali Resistant Refractory Castables, Find details about China Refractory, Castable from Common Alkali Resistant Refractory Castables
Category | Ordinary alkali | ||
Model | LM-12 | LM-13 | |
Chemical composition % | Al2O3 | ≤45 | ≤48 |
SiO2 | ≥40 | ≥40 | |
Bulk density g/cm3 | 110ºC×24h | ≥2.10 | ≥2.10 |
Bending strength MPa | 110ºC×24h | ≥5.0 | ≥5.0 |
1000ºC×3h | ≥2.0 | ≥2.5 | |
Crushing strength MPa | 110ºC×24h | ≥40 | ≥40 |
1000ºC×3h | ≥15 | ≥20 | |
Line changes by less than 1% of temperature ºC | 1200 | 1300 | |
Heat conductivity at 350ºC W/(mk) | 0.80 | 0.85 | |
alkali resistance JC/T808-1987 | second level | second level |