Insulation refractory castable with low bulk density, and the basic body density is about 0.8-1.5. The castable contains many pores, low bulk density, small thermal conductivity and good thermal insulation effect.Mainly used as anti-corrosion lining, such as flue, chimney, pickling tank, nitric acid concentration tower, acid recovery furnace and other container lining corroded by acidic high temperature gas, etc., the use temperature is 900-1200 ℃.
| Brand Properties |
LWC-170 | LWC-160 | LWC-150 | LWC-140 | LWC-130 | LWC-120 | |
| Application Limit Temp ℃ | 1,700 | 1,600 | 1,500 | 1,400 | 1,200 | 1,100 | |
| Bulk Density (g/cm3) | 1.45 | 1.5 | 1.55 | 1.45 | 1.25 | 1.15 | |
| Water Required for Casting (%) | 18-23 | 20-25 | 21-25 | 28-35 | 40-45 | 45-50 | |
| CCS/MOR(MPa) | at110℃x24h | 15(4) | 10(3.0) | 12(3.5) | 11(3.3) | 8(3) | 8(2.5) |
| at1,200℃x3h | 14(4) | 10(3.0) | 11(3.5) | 5(2.5) | 4(2) | 4(2) at1,000℃ | |
| at1,400℃x3h | 15(5) | 14(8.1) | 22(10.8) | 15(3) | – | – | |
| Permanent Linear Change (%) | at110℃x24h | -0.08 | -0.06 | -0.12 | -0.06 | -0.09 | -0.09 |
| at1,200℃x3h | -0.1 | -0.1 | -0.18 | -0.4 | -0.8 | -0.65 at1,000℃ | |
| at1,400℃x3h | 0.1 | -0.5 | 0.1 | -1.0 | – | – | |
| Thermal conductivity(W/m.k) | at400℃ | 0.6 | 0.5 | 0.52 | 0.32 | 0.18 | 0.16 |
| at1,000℃ | 0.8 | 0.6 | 0.64 | 0.41 | 0.24 | 0.21 | |
| Chemical Analysis(%) | Al2O3 | 90 | 75 | 60 | 43 | 35 | 33 |
| SiO2 | – | 15 | 30 | 40 | 47 | 49 | |
