Magnesita Refractories: Smart Installation for Durable Tundish Linings

Core Installation Guidelines

Magnesita refractories combine organic/inorganic binders to create high-performance linings. Critical parameters include:

• Permanent layer temp: <100°C (ideal: ambient)
• Working layer thickness: 40-50mm (bottom), 45-60mm (walls)
• Minimum 55mm at slag line

3-Step Installation Process

1. Preparation & Base Layer

Install impact pads with ramming mix, spread magnesia dry vibratables evenly, and position forming molds with 45-60mm clearance from permanent walls.

2. Vibration & Curing

Layer material in 3-5min vibration cycles. Cure at 200-250°C for 60-90min, then cool below 100°C before demolding.

3. Final Assembly

Inspect for defects (>2mm cracks require repair), install flow control components, and backfill joints with matching material.

Optimized Baking Protocol

Maximize magnesita refractories' performance with:

• 30min ramp to 800°C
• 70min hold at 1100°C
• Total time: 70-180min

Key Advantages

Magnesia-based linings deliver:

• 12h+ operational lifespan
• 20% lower steel inclusion rates
• Reduced thermal shock risks

Pro Maintenance Tips

Extend magnesita refractory life with:

1. Post-cast laser wear scanning
2. Preventive repairs at 8h intervals
3. Controlled cooling between heats