Slide Gates
Slide gates are critical components in steelmaking, used for precise flow control of molten metal in ladles and tundishes during continuous casting. These mechanisms require high-performance refractory materials to withstand extreme temperatures, mechanical stress, and chemical corrosion while ensuring smooth operation and minimal contamination.
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Key Functions of Slide Gate Refractories
1. Thermal Resistance: Withstand temperatures exceeding 1,600°C.
2. Erosion & Corrosion Resistance: Protect against molten steel and slag attack.
3. Mechanical Strength: Ensure durability under repeated sliding operations.
4. Oxidation Resistance: Prevent degradation due to exposure to oxygen-rich environments.
Types of Refractories Used in Slide Gates
Alumina-Zirconia-Carbon (AZC) Refractories: High erosion resistance, used in aggressive steel grades.
Magnesia-Carbon Refractories: Excellent thermal shock resistance, suitable for high-temperature applications.
Spinel-Based Refractories: Provide enhanced corrosion resistance in acidic slag environments.
Zirconia Inserts: Used for superior wear resistance and extended service life.
