Primary Wear & Corrosion Factors: Alumina deposition and clogging, slag-band erosion on shrouds and SENs, thermal shock at start of cast, flux corrosion of the tundish lining
XZK Group provides integrated refractory packages engineered for zoned thermal and chemical stress. Every brick shape, mortar joint, and castable density is calibrated to ensure balanced refractory erosion and synchronized campaign shutdown schedules.
Zoned lining design targeting synchronized campaign wear across all operational furnace zones. Click a hotspot above to highlight a row here.
| # | Furnace Lining Zone | XZK Recommended Refractory Grade | Key Physical & Chemical Properties | Operational Mechanism & Benefits | 操作 |
|---|---|---|---|---|---|
| 1 | Tundish Working Lining | Eco-Friendly Magnesia Dry Vibrating Mix (XZK-Eco-Magnesia) | MgO ≥60%, CaO ≥30%, Service Temp 1600°C | Rapid heat-up, low thermal conductivity, and quick clean skull deskulling after casting. | Quote |
| 2 | Slide Gate Plate | Al-Zr-C / Magnesia-Spinel Slide Gate (XZK-SLH-X/E) | Al₂O₃ ≥75%, ZrO₂ ≥4%, CCS ≥100 MPa, Porosity ≤10% | Smooth sliding stroke, zero air leakage, multi-heat throttle control without cracking. | Quote |
| 3 | Submerged Entry Nozzle (SEN) | Anti-Clogging Al₂O₃-C & Zirconia SEN (XZK-SEN Series) | Body Al₂O₃ ≥45%, Slag Line ZrO₂ ≥75%, BD ≥3.50 g/cm³ | Zirconia collar resists mold powder erosion while inner liner prevents alumina clogging. | Quote |
| 4 | Monolithic Stopper Rod | Carbon-Free Tip Alumina-Carbon Stopper (XZK-ZSLT-A/B) | Tip Al₂O₃ ≥68%, Thermal Shock (1100°C water) ≥5 cycles | Precision molten steel metering with superior thermal shock survival. | Quote |
| 5 | Ladle Shroud | Al₂O₃-C with Zirconia Ring (XZK-CLTZ) | ZrO₂ ≥55% in slag line, Anti-oxidation glaze coating | Zero re-oxidation of molten steel from ladle to tundish. | Quote |
Continuous casting refractories are judged on one outcome: how many heats you can cast before something forces a change. Every specification decision — tundish lining, stopper, plate chemistry, shroud band, SEN liner — should be traced back to sequence length, steel grade and the failure mode that actually ends your sequences today.
Diagnosing which mechanism you actually have matters more than any product choice, because the answers are different.
Eco-friendly magnesia dry vibratable mix (XZK-Eco-Magnesia) is the standard for long sequences: dry installation with no water and no curing, quick heat-up, low thermal conductivity that retains steel temperature, and clean deskulling between sequences. With SiO₂ held to 3.0%, it also limits CaO-SiO₂ pickup into the steel — a steel quality benefit, not just a refractory one.
Every link has to match the route:
Caster type and strand count, section size, steel grade mix, sequence length target, tundish capacity and the mechanism types in use. We will return a complete flow-control schedule with grades matched to your steel grades.
XZK delivers precise zonal lining packages for Tundish & Continuous Flow Control Solution. Every grade in the matrix above is calibrated against three engineering levers: heat-flow management, chemical resistance, and mechanical anchoring. By tuning these three levers, we extend campaign length while keeping total refractory consumption per ton of steel competitive.
Our chief engineer Professor Shi Gan oversees every lining proposal — heat balance calculation, brick sequence optimization, and pre-assembly tolerance verification are all performed in-house before any shipment leaves Xinmi. The result: lining campaigns that match or beat OEM schedules with measurable per-ton savings.
Verified deliveries to leading steel groups across Asia, Europe and the Americas.
150 t torpedo car — complete refractory supply
80–120 t EAF ladles — working lining, purging plug & well block
EAF slag line & ladle slide gate system
Click to expand answers from our senior metallurgical engineers.
For 15+ heat sequences, eco-friendly magnesia dry vibrating mix (XZK-Eco-Magnesia) gives the best balance: rapid heat-up (≤2 h), low thermal conductivity to keep the steel temperature, clean deskulling between sequences and minimal CaO-SiO₂ pickup into the steel.
We use a dual-layer SEN design: anti-clogging inner liner with carefully controlled CaO content (creates a thin liquid layer at the bore wall to wash away alumina deposits) plus a zirconia collar on the slag-line band (resists mold powder erosion). Open-rate guarantee 100%.
Use our alumina-carbon ladle shroud with zirconia ring (XZK-CLTZ) — the zirconia collar prevents slag-line erosion, and the anti-oxidation glaze coating stops air ingress during ladle changeover, eliminating the white-pickup inclusion defect.
High-velocity molten…
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Intense hot metal wa…
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Arc flare thermal ra…
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View 3D Lining Configuration →Every batch of raw materials is chemically assayed. Finished refractory shapes undergo density, ultrasonic non-destructive testing, and pre-assembly gap verification prior to global packaging.