Physical and chemical indexes of products
Refractory materials with different indicators can be customized according to demand. Call 400-188-3352 for detailsThe high-strength wear-resistant refractory castable is made of corundum, silicon carbide and special grade dead burned bauxite as the main raw materials, together with ultra-fine powder and composite additives. It is characterized by high early mid temperature strength, good high temperature performance, stable volume, strong resistance to slag penetration and corrosion, erosion resistance, convenient construction, and strong integrity of lining structure. It is a good wear-resistant material used in CFB boilers at present.| Item/Model | DFNMJ-1 | DFNMJ-2 | DFNMJ-3 | DFNMJ-4 | |
| Al2O3 (%) | ≥70 | ≥75 | ≥80 | ≥85 | |
| SiO2 (%) | ≤26 | ≤21 | ≤16 | ≤11 | |
| CaO (%) | ≤2.5 | ≤1.5 | ≤1.2 | ≤1.0 | |
| Bulk density (g/cm³) | 2.75 | 2.85 | 2.90 | 2.95 | |
| Compressive strength (Mpa) | 110℃×24h | ≥70 | ≥80 | ≥85 | ≥90 |
| 815℃×3h | ≥80 | ≥85 | ≥90 | ≥95 | |
| 1100℃×3h | ≥85 | ≥90 | ≥95 | ≥110 | |
| Flexural strength (Mpa) | 110℃×24h | ≥8 | ≥11 | ≥12 | ≥13 |
| 815℃×3h | ≥9 | ≥12 | ≥13 | ≥14 | |
| 1100℃×3h | ≥10 | ≥13 | ≥14 | ≥15 | |
| Normal temperature wear（CC） | ≤7 | ≤6 | ≤6 | ≤5 | |
| Thermal shock stability (900 ℃ water cooling), times | ≥25 | ≥20 | ≥25 | ≥20 | |
| Note: The performance index can be adjusted according to the service conditions. | |||||
