Drum Flaker
Drum Flaker
Drum Flaker
Drum Flaker
Drum Flaker
Drum Flaker

Drum Flaker

Applications:

  • solidification of  molten substances into flakes or microcrystals,
  • food, chemical and pharmaceutical industryies.

0

Specifications:

  • the compact construction requires little floor space, easy operation low operating costs,
  • heat generated during material crystallization is transferred through the drum wall  to the cooling agent (cooling water) sprayed inside the drum using a system of nozzles,
  • the system provides efficient and uniform cooling of the material over the entire length of the drum; the warmed cooling water is transferred to an external cooling system,
  • no condensation of vapours on the process side (capable of flaking hygroscopic products),
  • completely sealed casings for flaking poisonous and dangerous substances (environment protection, legal health regulations),
  • nitrogen gas blanketing for products sensitive to oxygen.

Operating principle:

The drum flaker is used to cool a hot, liquid product to its congealing temperature, in which it transforms from a molten to a solid state. The liquid product dosed on the surface of the drum begins to congeal when it comes into contact with a rotating drum, which is cooled from the inside, through effective transfer of crystalization heat from the product. After a full revolution of the drum the congealed product is removed with a knife scraper, usually in the form of homogeneous flakes or flocks. The shape and size of the dry product depend on its nature and process parameters.

Drum flaker with a dip pan.

The rotating, internally cooled drum is partly immersed in the melted product in a dip pan. As the drum turns a thin film of the liquid product attaches to the exterior of the drum and gradually cools and coagulates. The product must have good adhesive properties on the surface of the drum.

Drum flaker with overhead application roll.

The heated application roll is positioned above the drum flaker. The liquid product is dosed on the surface of the drum, through the gap between the application roll and the drum. The shape and thickness of flakes may be controlled through the width of the gap. As the drum turns a thin film of a liquid product attaches to the surface of the drum and gradually cools and coagulates. This method is often used for products with average and high viscosities.

A pilot installation is used when it is necessary to optimize the congealing or drying processes of known and new products.