by
Volkan Aktan, Project Engineer Dry Grinding, Thomas Runde, Managing Director
and Karsten Frese, Senior Project Engineer Dry Grinding, Tietjen
Verfahrenstechnik, Germany
Design an optimised multi-stage grinding solution
As a specialist in grinding technology, Tietjen Verfahrenstechnik always keeps an eye on the size reduction of mixed raw materials, especially in challenging applications such as pet food and aqua feed. Together with our worldwide customers and partners, we continue to optimise and search for the economically best solutions for targeted crushing according to customer requirements. Since 1959, Tietjen has been building hammer mills and individual grinding solutions in Hemdingen near Hamburg.
To ensure that our customers achieve even better grinding results, we have recently also been looking more closely at optimising the pre-grinding process. Good grinding depends on the one hand on the technical design of the hammer mill itself (sieve surface, impact surface, motorisation, speed and sieve perforation) and on the other hand on the aspiration of the mill (air volume flow, air speed, filter type, filter surface). The grinding plant itself can only be optimally operated with appropriate, load-dependent controlled dosing of the input material. However, other components of a good overall system - such as the pre-crushing system discussed here - also contribute to improved results.
Why pre-crushing?
If raw material components are simply too hard for the fine grinding stage, then the grinding stage should be protected. Pre-grinding is then strongly recommended. This is especially true for recipes with legumes such as peas and beans and with sugar beet pellets.
For mixtures with a very wide grain spectrum, such as recipes for flours with legumes, pellets, cereals or rice, a pre-grinding for homogenisation for the further grinding process can be advantageous. A homogeneous structure can be ground more efficiently. This prevents screen damage and increases the availability of the hammer mill - from a technical and economic point of view!
Pre-grinding guarantees the pre-crushing of hard ingredients with simultaneous homogenisation of the recipe, thereby optimally preparing the raw material for the actual fine grinding process.
Read more HERE.
Design an optimised multi-stage grinding solution
As a specialist in grinding technology, Tietjen Verfahrenstechnik always keeps an eye on the size reduction of mixed raw materials, especially in challenging applications such as pet food and aqua feed. Together with our worldwide customers and partners, we continue to optimise and search for the economically best solutions for targeted crushing according to customer requirements. Since 1959, Tietjen has been building hammer mills and individual grinding solutions in Hemdingen near Hamburg.
To ensure that our customers achieve even better grinding results, we have recently also been looking more closely at optimising the pre-grinding process. Good grinding depends on the one hand on the technical design of the hammer mill itself (sieve surface, impact surface, motorisation, speed and sieve perforation) and on the other hand on the aspiration of the mill (air volume flow, air speed, filter type, filter surface). The grinding plant itself can only be optimally operated with appropriate, load-dependent controlled dosing of the input material. However, other components of a good overall system - such as the pre-crushing system discussed here - also contribute to improved results.
Why pre-crushing?
If raw material components are simply too hard for the fine grinding stage, then the grinding stage should be protected. Pre-grinding is then strongly recommended. This is especially true for recipes with legumes such as peas and beans and with sugar beet pellets.
For mixtures with a very wide grain spectrum, such as recipes for flours with legumes, pellets, cereals or rice, a pre-grinding for homogenisation for the further grinding process can be advantageous. A homogeneous structure can be ground more efficiently. This prevents screen damage and increases the availability of the hammer mill - from a technical and economic point of view!
Pre-grinding guarantees the pre-crushing of hard ingredients with simultaneous homogenisation of the recipe, thereby optimally preparing the raw material for the actual fine grinding process.
Read more HERE.
The Global Miller
This blog is maintained by The Global Miller staff and is supported by the magazine Milling and Grain
which is published by Perendale Publishers Limited.
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