The dryer, also known as preheating furnace, is a crucial stage in the process of galvanizing of metal parts.
Prior to the immersion in the zinc baths, this phase involves drying and preheating the material to a temperature within range of 60 to 80°C (140 to 176°F).
Its key function is to prepare the pieces, reducing splashes and ejections during the descent into the zinc bath, thereby minimizing thermal shock and the workload on the furnaces.

The infrared technology, introduced by GIMECO, represents a significant contribution to the streamlining of drying operations.

Main types of dryers are tailor-designed to plant requirements and specifications. Dryers can be static or dynamic with the former is traditional and common while the second is more flexible in case of different dimensions of the envelope.

In summary, the dryer is essential to preparing the pieces prior to proceed with the dipping, ensuring a high-quality finished product.

Direct heating

  • Simpler design and startup
  • Ideal in tight spaces
  • Suitable for small budgets
  • Heat economizer easily installable in a second phase
  • High capacity blowers
  • Gaseous fuel only
  • Water transfer inside the dryer
  • High temperature inertia

Undirect heating
infrared technology

  • No water or other material contamination
  • Abundant recirculating flow rate
  • High efficiency
  • Infrared contribution to the pre-heating
  • May operate with our economizer, optimizing the whole heat recovery
  • Isolated system ensures the environment safe from contamination

Undirect heating
thermic oil

  • No water or other material contamination
  • Abundant recirculating flow rate
  • Higher efficiency
  • Thermic oil media
  • May operate with our economizer, optimizing the whole heat recovery
  • Isolated system ensures the environment safe from contamination

Constructive executions

Pit
Static, general job

Built in concrete or steel-made walls, pit dryers are equipped with rolling covers. Material is handled by cranes or by chain conveyors.

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Aboveground tunnel
Dynamic, general job

Installed in high-automated plants, it ensures higher efficiency and less heat loss at the outlet. Material is handled by the internal logistics system.

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Aboveground tunnel
Dynamic, smallware

This high-temperature dryer is specifically designed for thorough and rapid drying and pre-heating of smallware in automatic spin galvanizing.
Material is handled either by a belt conveyor or a rotary drum featuring an Archimedes' screw design.

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Chain conveying
Dynamic, tubes and pipes

Dedicated to effective drying and pre-heating of tubes and pipes, this high-temperature dryer utilizes a high-volume drying air system hence it does not require excessive temperatures. Material is handled by a chain conveyor throughout the dryer.

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