Spin Flash Dryers

Product Type(s) : Spin Flash Dryers
Description :

Our Spin Flash dryers are designed for continuous drying of cohesive and non-cohesive pastes and filter cakes, as well as high-viscosity liquids. The main components in the Spin Flash plant are a feed system, the patented drying chamber and a bag filter.



Widely acclaimed by customers in a variety of industries all over the world, this patented process provides a faster and more energy-efficient alternative to spray drying. With more than 350 Spin Flash dryer installations world-wide SPX FLOW combines experience and cutting-edge technology into added-value solutions for our customers.

Feed System

The feed system consists of a feed vat where a discontinuous flow of product is buffered and fragmented by an agitator prior to continuous drying. A variable speed feed screw (or pump in the case of fluid feed) forwards the product to the drying chamber.

Drying Chamber

The rotor at the conical base of the drying chamber fluidizes product particles in a drying-efficient hot air flow pattern in which any wet lumps are rapidly disintegrated. Hot air is supplied by a temperature-controlled air heater and speed-controlled fan, entering the drying chamber at a tangent in order to establish a turbulent, whirling air flow.

Airborne, fine particles pass through a classifier at the top of the drying chamber, while larger particles remain in the air flow for further drying and powdering.

The drying chamber is rigidly designed to withstand pressure shock in the event of explosive combustion of flammable particles. All bearings are effectively protected against dust and heat.

Bag Filter

Powder from the drying chamber is collected in bag filter, while the outlet air leaves the system at the top via a suction fan.

Special Features

Our patented Spin Flash plant features an inverted cone for high velocity air inlet at the base of the drying chambers preventing risk of product built-up. This unique technique has proven to be the customer-preferred method of drying paste in the industrial sector.

State-of-the-art automation systems are available for the Spin Flash drying plants, enabling fully automatic control, process optimization, data logging, traceability, and maintenance scheduling.

Capacity Profile

1 kg/h to 40 tons/h.


  • High drying efficiency providing low energy costs
  • Continuous processing with short processing time
  • Low operator overheads and minimum maintenance costs
  • Controlled residence time enabling high temperature drying
  • Controlled particle size
  • Very fine powder production eliminating requirement for milling
  • Limited space requirements
  • High-pressure, shock-resistant chamber for safe drying of flammable products
  • Available in FDA and cGMP compliant configurations
Key Applications
  • Agrochemicals
  • Ceramics
  • Food and feed products
  • Inorganic chemicals
  • Organic chemicals
  • Pharmaceuticals
  • Pigments and dyestuffs
  • Waste products


Drying Chamber Drying chambers are available in standard sizes with diameters from 200 to 2,500 mm diameter. Standard material of construction is stainless steel. Optionally, the drying chamber can also be supplied in Hastelloy or other corrosion resistant materials. Drying chambers for inlet temperatures above 500Ā°C feature special, heat resistant stainless steel air distributors. The Spin Flash dryer provides:

  • Continuous process with short processing time for higher yield
  • Complete temperature and speed control for optimum drying and minimum residence time
  • Special feed agitator and screw conveyor to avoid bridge building
  • Drying chamber with patented inverted conical base and rotor system for air velocity control, high drying efficiency and product protection

Small Scale Plants Small scale ready-to-install Spin Flash drying plants are available for research purposes and small-scale production. They are simple to operate and dismantle for cleaning.