• Refractory

COLDMAG®

Self-Hardening Tundish Working Lining for continuous Casting

Designed to maximize productivity reduce total operating costs and eliminate energy-intensive drying processes

COLDMAG® is a MgO-based self-hardening tundish working lining developed for continuous casting operations. Its innovative formulation eliminates the need for external heat supply during the curing process, helping steelmakers simplify tundish preparation, reduce energy consumption, and improve operational efficiency. Designed for modern steel plants seeking higher productivity with fewer operational constraints, COLDMAG® enables faster tundish availability, lower manpower requirements and improved process flexibility. Suitable for all steel grades, it can be used in both pre-heated and non-pre-heated tundish operations.

The + products

  • No External Heating Required
  • Faster Tundish Availability
  • More Productivity from Existing Resources
  • Lower Total Cost of Ownership

The + product

1/ No External Heating Required

COLDMAG® hardens at room temperature without the need for external heat supply, eliminating energy consumption associated with drying equipment and reducing infrastructure requirements.

2/ Faster Tundish Availability

COLDMAG® can reduce tundish preparation and demolding time to approximately 1 hour, compared with several hours typically required with conventional tundish lining technologies. Faster turnaround helps maximize tundish availability and increase casting flexibility.

3/ More Productivity from Existing Resources

By shortening preparation cycles and simplifying installation, COLDMAG® enables operators to prepare more tundishes during a shift. In high-throughput operations, plants can handle significantly more steel grades or shorter sequences without increasing workforce or equipment capacity.

4/ Lower Total Cost of Ownership

While product cost should never be evaluated on a refractory per-ton basis alone, COLDMAG® helps reduce overall operating costs through lower energy consumption, reduced labor requirements, simplified logistics and increased equipment utilization.

Why Choose COLDMAG®

1/ Eliminate Energy-Intensive Drying Constraints

Traditional tundish working linings often require dedicated drying equipment, which implies natural gas or electricity consumption and additional handling operations.

COLDMAG® removes these requirements by hardening naturally without external heat input. This helps:

  • reduce energy consumption;
  • eliminate dryer-related costs and maintenance;
  • reduce dependency on gas or electrical heating systems;
  • lower CO₂ emissions associated with tundish preparation.

The result is a more sustainable and cost-efficient refractory solution.

2/ Improve Operational Efficiency and Workplace Conditions

The simplified application process reduces operational complexity while improving workplace ergonomics.

Benefits include:

  • reduced manpower requirements;
  • easier process management ;
  • improved operator safety;
  • greater flexibility in production planning;
  • optimized tundish bay logistics.

The adaptable mold system also allows different lining thicknesses to be achieved, helping optimize refractory consumption according to operational needs.

3/ Support Steel Quality Performance

COLDMAG® contributes to cleaner steel production by reducing hydrogen inclusions commonly associated with water-based tundish lining systems.

Built to Create Measurable Value

COLDMAG® has been developed to address one of the most important challenges facing modern steel plants: producing more steel with fewer resources.

Rather than focusing solely on refractory consumption, COLDMAG® improves the overall economics of tundish management by combining:

  • Self-hardening technology,
  • Reduced energy requirements
  • Faster Tundish turnaround
  • Lower labor requirements
  • Improved equipment utilization
  • Optimized refractory consumption

The result is a solution that helps reduce total operating costs while increasing productivity and process reliability.

Key Advantages

Benefit Value Delivered
Self-hardening technology No external heating required
Reduced  manpower requirements Improved productivity and ergonomics
Faster preparation Reduced tundish turnaround time
Improved steel cleanliness Reduced hydrogen inclusions
Optimized refractory consumption Adaptable lining thickness
Longer casting sequences Excellent thermal insulation

Applications

1/Continuous Casting Tundishes

COLDMAG® is dry self-hardening  working lining  for continuous casting tundishes designed for steelmakers seeking higher productivity and lower operating costs. It is suitable for all steel grades and can be used in both pre-heated and non-pre-heated conditions.

2/ High-Efficiency Steelmaking Operations Special Steel Production

For operations requiring additional thermal treatment, COLDMAG® can be pre-heated tundish operations while maintaining all the operational advantages of the self-hardening system.

COLDMAG® is particularly suited to operations where:

  • production continuity is critical;
  • tundish availability impacts throughput;
  • energy efficiency is a priority;
  • labor resources are limited;
  • operational flexibility is required.

Expert and Technical Support

COLDMAG® is supported by a complete service package including application expertise, refractory consumption optimization, operator training and maintenance support for application equipment. Terresis MAGNA technical specialists also provide customized turnkey projects, equipment recommendations, and mold designs adapted to the specific requirements of each steel plant.

Contact an expert

Contact an expert

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