Physical and chemical indexes of products
Refractory materials with different indicators can be customized according to demand. Call 400-188-3352 for detailsNeutral dry ramming material: neutral dry ramming material is characterized by easy use, hardening at normal temperature, high high temperature compressive strength, small thermal expansion and shrinkage, and strong resistance to solution erosion. Alkaline dry ramming material: Alkaline dry ramming material has the advantages of high temperature volume stability, erosion resistance, wear resistance, thermal shock resistance, load softening temperature, etc.| Project | Target | ||||
| NM-1 | NM-2 | NM-3 | NM-4 | ||
| Al2O3 % | ≥70 | ≥75 | ≥80 | ≥85 | |
| Bulk density g/cm3 110℃×24h | ≥2.6 | ≥2.75 | ≥2.8 | ≥2.9 | |
| Normal temperature compressive strength MPa | 110℃×24h | ≥60 | ≥65 | ≥70 | ≥75 |
| 1400℃×3h | ≥90 | ≥95 | ≥105 | ≥110 | |
| Bending strength at room temperature MPa | 110℃×24h | ≥8.5 | ≥9 | ≥10 | ≥11 |
| 1400℃×3h | ≥13 | ≥14 | ≥15 | ≥16 | |
| Normal temperature wear cm3 | ＜9.6 | ＜8.5 | ＜7.3 | ＜6 | |
| 0.2MPa Start temperature of load softening ℃ | ＞1450 | ＞1490 | ＞1530 | ＞1560 | |
| Thermal shock stability 900℃ | ＞20 | ＞20 | ＞20 | ＞20 | |
| Maximum service temperature ℃ | 1550 | 1550 | 1600 | 1600 | |
| Heating permanent line change % | ＜-0.3 | ＜-0.3 | ＜-0.2 | ＜-0.2 | |
