Processing technology
The processing technology is a branch of chemical engineering . The basic procedural operations used are, for example, in the preparation of the raw materials to be used in a production process :
- Change of material properties: crushing , cooling , evaporation ...
- Change of material composition: filtration , distillation , mixing , sludge conditioning ...
through continuous or discontinuous processes and techniques for mixing, granulating, pelletizing , sieving , drying and fine grinding of the components. Typical raw materials in industrial production in which processing technology is used are: concrete , dry mortar , plaster , hardware store products, sand-lime brick , ceramics , refractory glass , carbon compounds , friction linings , accumulator and battery compounds , metallurgy , foundry molding sand . A more recent field of application in environmental protection is material separation.
The production of suitable equipment and entire process lines is a focus of German mechanical engineers .
Fine grinding technology
When grinding , different grain sizes are achieved one after the other. For this purpose are used industrially:
- Media mills (eg. B. ball , rod, autogenous, planetary , vibration , centrifugal and stirred ball mills)
- Roller mills (e.g. roller mills, roller mills , good- bed roller mills and vertical roller mills)
- Impact mills ( rotor and jet impact mills )
- Granulators
Drying technology
Frequently used drying techniques are:
- as laboratory technology contact drying and vacuum contact drying
- Vacuum hot steam drying
- Drying of aqueous material systems with hot air or flue gases
- Emission-free drying (also: Ex-protected drying)
Teaching
Processing technology is used as an engineering discipline u. a. taught at the Faculty of Environmental Sciences and Process Engineering of the Brandenburg Technical University ( Cottbus ) and the TU Bergakademie ( Freiberg ).
literature
- Karsten Löhr, Michele Melchiorre, Bernd-Uwe Kettemann: Processing technology. Recycling of production waste and old products. Hanser.
- Klaus Schönert : Chopping. In: Handbook of Mechanical Process Engineering. Volume 1, ed. v. Heinrich Schubert , p. 301. WILEY-VCH Verlag, Weinheim 2003.