Flash Dryer Plant

Flash drying is defined as the drying of particles that are suspended and conveyed in a hot air stream. Typical products that are suited for flash drying are powders, polymers, It is designed for the flash drying of wet particles with "surface water" from centrifuges or filters where the product can be dispersed by the high air velocity prevailing in the flash dryer. The product is dried to a free-flowing powder in a very short time.

The short product retention time, especially when cyclones are used for product collection from the exhaust drying air, provides the possibility for faster grade charges. Bag filters can be added as a "police" filter or even by replacing the cyclone if the authorities require lower emission to the atmosphere.

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Application

A rotary dryer and cooler operates in the following manner:

  • Metallic & Non-metallic Minerals
  • Industrial Minerals
  • Chemical & Pharmaceutical Products
  • Wood & Related Products
  • Plastic & Related Products
  • MSW & Other Wastes Material

Specifications

The turbulent dispersion and mixing of the wet particles in the air allows high temperatures of the inlet drying air due to the cooling effect provided by the fast evaporation of the moisture from the particle surfaces. Powders with a mean particles size (d50) from 50 micron to 500-800 micron are suitable when not being sticky at temperatures 50-100 °C. Drying economy depends very much upon source of energy and maximum allowable inlet temperatures (often 150 to 225 °C depending on the heat sensitivity of the product).

Features

  • Capacity ranges from few kgs to 5 mtph
  • Temperature ranges from 110 ˚C to 400 ˚C
  • Low Fuel, Power Consumption & Maintenance
  • High reliability & longer life
  • Direct & Indirect Firing with Hot Air Generator (HAG)
  • Fuel Options: Hot Air, Coal, Wood, Gas, Oil, Saw dust etc…