Continuous Casting

Tundish Refractory Materials

Lining materials for continuous casting tundishes, built for stable heat flow and clean steel production. Supplied by Zhengzhou Zhongqi Refractory Materials Co., Ltd.

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Tundish Lining

Working, Permanent and Insulation Layers

Tundish refractory materials are installed as a three-part lining: a working layer facing the molten steel, a permanent layer behind it, and an insulation layer that limits heat loss to the shell. Dry vibratable ramming masses are compacted in place around the tundish body, so no firing is required before the first heat.

  • Working layer, permanent layer and insulation layer supplied as one lining system
  • Silica dry vibratable ramming mass for small and medium tundishes
  • Magnesia dry vibratable mass for large tundishes and long casting sequences

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Technical summary
ParameterValue
Lining structureWorking layer, permanent layer, insulation layer
Construction timeApproximately 2 hours
Service lifeAverage 30 hours, up to 35 hours
Silica massDry vibratable ramming mass for small and medium tundishes
Magnesia massDry vibratable mass for large and long-duration tundishes
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Working Practice

Placement and Compaction

Dry vibratable masses are rammed between the tundish shell and the working-layer form, layer by layer, with a vibrator applied to each lift. A complete lining takes roughly two hours, which keeps tundish changes inside the casting schedule and limits tundish downtime.

Material selection follows the casting conditions: silica ramming mass suits small and medium tundishes, while magnesia dry vibratable mass is chosen for large tundishes and extended casting sequences where longer working-layer life is required.

Related Castables

Service Life

Measured Working-Layer Life

Case records reported for tundish magnesia and silica ramming masses show working-layer life between 30 and 33 hours, in line with an average of 30 hours and a peak of 35 hours.

30h Average service life
35h Maximum service life
2h Approximate construction time

Anyang Steel

Tundish magnesia ramming mass with a working-layer life of 31 hours.

Shougang Steel

Tundish magnesia vibration material with a working-layer life of 33 hours.

Yueyufeng Steel

Tundish silica ramming mass with a working-layer life of 30 hours.

Material Match

Silica for small and medium tundishes; magnesia for large tundishes and long-duration casting.

Range

Other Refractory Offerings

Alongside tundish materials, the product range covers refractory bricks, castables and insulation bricks for glass kilns, furnaces and boilers.

AZS Bricks

Fused zirconia corundum bricks in AZS33#, AZS36# and AZS41# grades for glass industry kilns.

View product range

Corundum Castable

AL2O3 based castable rated to 1700°C, applied in boilers and heating furnaces.

View castables

Steel Fiber Castable

High-strength wear-resistant castable for circulating fluidized bed boiler separators and return devices.

CFB boiler solutions

Discuss Your Tundish Lining

Tell us your tundish size, casting sequence and steel grade, and we will recommend the working, permanent and insulation materials to match.