Our Eccentric vibrating mills in sizes ESM 190 and 230 have been specially developed for process development in the laboratory. Our mills are designed to deliver reliable results, which are important for scaling up to production machines. As with the production machines, we also offer various lining options for our laboratory versions, including ceramic, rubber and steel.
In addition to the lining, our grinders can be equipped with various grinding media. These include materials such as steel, ceramic and glass, which is available in various shapes such as balls, cylpebs or rods.
Our Eccentric vibrating mills can be equipped with a double jacket for heating or cooling the mill. This enables additional control of the grinding process, especially with temperature-sensitive materials. Furthermore, they can be configured with various additional components such as underframes, soundproof cabins, glove boxes and various dosing and filling devices.
Only the single-tube eccentric vibrating mill from SIEBTECHNIK TEMA performs inhomogeneous movements consisting of elliptical, circular and linear vibrations due to an outwardly positioned unbalance drive. The result is a high degree of loosening of the mill filling with very high impact stresses on the material to be ground, especially at high amplitudes. The high specific energy input with a high degree of loosening of the mill filling is a decisive advantage of the single-tube principle, which, due to its design, also enables a significant reduction in the mill mass and thus the drive energy. The eccentrically arranged unbalance excitation generates inhomogeneous vibrations, whereby the main wear zone in the Eccentric vibrating mills is distributed more evenly over half of the lower plating.
The modular design of the machine offers enormous advantages, especially for larger machines:
Our Eccentric vibrating mills have a modular design and essentially consist of
Thanks to different discharge systems, the ESM can be used with the operating modes
be equipped.
The mill is set into inhomogeneous vibrations via the three-phase direct drive and the exciter units, which lead to the high energy utilization already mentioned. The mill is filled with ground material via a pipe socket at the highest point of the grinding container and discharged at the lowest point at the other end of the grinding container. A perforated plate in the outlet prevents the grinding media from passing through.
SIEBTECHNIK designs and manufactures Eccentric vibrating mills specially tailored to the respective application. Available options include
The ESM has proven its efficiency in a wide variety of applications and feed materials in the field of mechanochemical activation and ultrafine grinding, including
During mechano-chemical activation, highly reactive states are generated that arise when crystalline systems are subjected to impact stress. In general, brittle materials have a crystalline structure that represents the lowest-energy state before Crushing & Milling. When subjected to mechanical stress through impact, this crystalline structure is partially destroyed and the energy input is stored.
This results in highly reactive states which, for example
Reactions between different crystalline systems are a special feature, whereby new substances with specific properties are created through solid-state reactions. Under these circumstances, the Eccentric vibrating mills take on the role of a mechano-chemical reactor.
Ultra-fine grinding in the Eccentric vibrating mills also follows specific laws. Depending on the product and grinding time, finenesses of 0 – 5 µm can be achieved and fibrous materials can be broken down.
As an alternative to thermal asbestos destruction, the eccentric vibrating mill is used for fiber-free ultra-fine grinding of asbestos waste. During the ultrafine grinding of asbestos with the eccentric Vibrating mill, the impact stress and the associated high point temperatures achieve a complete destruction of the fiber structure through energy dissipation, so that needle-shaped, fibrous crystal structures are no longer detectable. The result is a fiber-free raw material.
Due to the high impact forces, the eccentric Vibrating mill can also be used for Crushing & Milling carbide scrap. For example, carbide drills or carbide cutting edges can be finely shredded.
For product tests and grinding trials, the screening technology technical center is equipped with test machines of various designs and the associated technical equipment for designing the mill sizes for the respective task.
All pilot plant machines can also be made available as rental machines so that specific grinding problems can be tested on site over a longer period of time.
We know what we are talking about when it comes to lithium processing and offer efficient solutions for the gentle processing of lithium derivatives. The focus is on continuous and discontinuous centrifuges and dryers that have been specifically designed to wash and dewater various lithium compounds.
We have the right solution for every task. And if not, we’ll work with you to find one. Get in touch with us!
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