Introduction
Dephosphorization lances are critical equipment for hot metal pretreatment, submerged into molten iron at 1300–1400℃ to inject dephosphorizing agents. The lance consists of an inner steel pipe for powder injection, surrounded by a refractory lining reinforced with V-shaped anchors and steel mesh. Grade JH-PQ-TP features Al₂O₃ ≥65% with bulk density ≥2.55 g/cm³ (110℃×24h) and cold crushing strength ≥30 MPa. The material is engineered to withstand highly oxidizing slags, delivering extended service life and consistent dephosphorization efficiency.
Key Advantages
01
Superior Slag Resistance
Formulated with high-alumina corundum-based materials to withstand highly oxidizing dephosphorization slags, significantly extending lance service life.
02
Excellent Thermal Shock Stability
Withstands repeated immersion in 1300–1400℃ molten iron, preventing cracking and spalling under cyclic thermal stress.
03
Reinforced Structural Integrity
Steel pipe core with V-shaped anchors and steel mesh reinforcement ensures strong refractory-to-steel bonding, preventing premature failure.
Specification
| Item | JH-PQ-TP | Test Condition |
| Al₂O₃ (%) | ≥65 | |
| Bulk Density (g/cm³) | 110°C×24h | ≥2.55 |
| 1500°C×3h | ≥2.5 | |
| Cold Modulus of Rupture (MPa) | 110°C×24h | ≥5 |
| 1500°C×3h | ≥8 | |
| Cold Crushing Strength (MPa) | 110°C×24h | ≥30 |
| 1500°C×3h | ≥50 |
