 |
|
Key features
Drying, Milling and Classifying on one single unit
Moisture and fineness control
Feed viscosity from 0,2 to 10 m.Pa.s.
Drying conditions up to 650°C gas temperature
Compact design
No feed moisture limitation
Open, closed- end recycle system concept
Low residence time
Flash drying down to submicron materials
Drying, Milling and Classifying in one machine
The dried particles then enter the classifying zone in the top of the dryer. Fine particles below a specific set point leave the dryer at the outlet and are collected in a suitable filter. Coarse particles rejected by the classifier are internally recycled and returned to the grinding section for further processing.
Applications
Click here to read more about flash drying applications
Products
Suspensions
Slurries
Pastes and dough
Wet powders with agglomerates
Filter cakes
Press cakes after press filtration
Thixotropic material
Wet grinded nano particle products
Degree of dispersion
Based on the amount of dispersion required during the drying process, the execution of the grinding section can be adapted. Several rotors and classifiers give various degrees of dispersion/grinding:
Gentle dispersion
High dispersion for solids
Milling
High dispersion for suspension and sticky/viscous liquids
Schematic sketch of the heating principle of the Micron Dryer
The Micron Dryer is a universal dryer combining direct drying. Heat is basically transferred into the product by a flow of gas to evaporate the solvents and volatiles.
Based on the application, different heating media can be used:
Hot-Air (either directly heated by gas burning or through an heat exchanger)
Nitrogen closed loop for explosive materials
Superheated steam for higher capacities and sterilization of products
Main features of the Hosokawa Flash dryer
One single machine for 3 unit operations: Drying grinding/dispersing and classifying in one, to save space and operational costs.
Particle size control: The dynamic classifier ensures a uniform product both in moisture content and in particle size distribution of the product.
Minimal dust emissions: The system operates under negative pressure which minimising dust getting into the environment.
Energy efficient operational plant: Data have proven that this concept requires less energy in comparison to any other system with consumption of lower than 1 kW for evaporation of 1 kg water/h.
Multi purpose: cakes or slurry in the same machine.
Excellent cleanability:
Reliability & quality of manufacturing
Number of references
|
|
|
