Introduction
Desulfurization lances are critical equipment for hot metal pretreatment, submerged into molten iron to inject desulfurizing agents for deep desulfurization. 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-TLQ features Al₂O₃ ≥60% with bulk density ≥2.5 g/cm³ (110℃×24h) and cold crushing strength ≥30 MPa. The material is engineered to withstand highly corrosive slags and thermal cycling, delivering extended service life and consistent desulfurization efficiency.
Key Advantages
01
Strong Slag & Iron Resistance
Formulated with high-alumina and silicon carbide materials to withstand highly corrosive desulfurization slags and molten iron erosion, 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 and delamination.
Specification
| Item | JH-TLQ | JH-KR | JH-CYQ | Test Condition |
| Chemical Composition (%): ≥ | Al₂O₃ | 60 | 65 | – |
| Al₂O₃+MgO | – | – | 90 | |
| Bulk Density (g/cm³): ≥ | 2.5 | 2.5 | 2.95 | |
| Cold Crushing Strength (MPa): ≥ | 30 | 30 | 35 | |
| 显气孔率%；≤ | 18 | 18 | 18 | |
| Application | Desulfurization Lance | KR Stirring Rod | Argon Blowing Lance |
