| Item | General | High strength | Arch roof | Insulating |
| Parameter | JC/T496-92(96) | RK-H | RK-A | CB-20 |
| Al2O3% | 25-30 | 25-30 | 30-35 | 25-30 |
| Sio2% | 60-70 | 65-70 | 60-65 | 60-67 |
| Fe2o3%≤ | 2.0 | 2.0 | 2.5 | 2.0 |
| Apparent porosity% | ≤25 | ≤20 | ≤25 | ≥30 |
| Refractoriness ℃≥ | 1650 | 1650 | 1700 | 1650 |
| Cold crushing strength Mpa≥ | 25 | 60 | 30 | 15 |
| Reheating Liner Change Rate（1350℃x2h）%≤ | +0.1~-1..0 | |||
| RUL(Refractory under Load) ≥ | 1350 | 1200 | 1400 | 1250 |
| Thermal conductivity≤ | 1.28 | 1.28 | 1.28 | 0.7 |
| Hot resistance(1100℃water cooling)times≥ | 10 | 25 | 10 | 5 |
