QDK-M designed
to separate

A qdk for vertical mills

The dynamic mineral separator QDK-M is especially designed for the use with vertical mills, and is suitable for the separation of products with limited fresh feed moisture content to the vertical mill. For example for the grinding of minerals. The QDK-M is fed from below, and supplies a top cut of up to 20 µm.

Reduces
oversized particles
increases
grinding efficiency
easy
fineness control

Technical details

  • Vertical mill separator from the OptiTromp family
  • Suitable for products with low moisture content, e.g. minerals
  • Top cut up to 20 µm
  • Constant separation conditions in entire separating zone
  • Airflow and rotating cage speed adjustable according to required product grade
  • Wear-free confined air seal for rotating cage
  • Convenient maintenance thanks to large inspection doors for easy access to motor

QDK-M separator

more than 1,000 installations worldwide

What is the function of a separator?

The separator classifies the material stream into two partial streams depending on the particle size. The separator is charged with powdered material, consisting of particles of different sizes, in a continuous process. It defines the finer particles as the finish product by selecting them from the feed material. The rejected coarse particles and the non-selected fine particles are fed out of the separator as a second mass flow.

What is the function of the jalousy ring in classifiers with a rotating basket?

The jalousy ring serves as a static pre-classification device to define the amount of material passing to the rotating cage. At the same time, it limits the space around the rotating cage which makes it easier to adjust the flow conditions.

What does the term "loading factors" mean?

We often talk about two loading factors with regards to the separator. The feed loading and the fines loading in [kg/m³]. It means the mass of the respective fraction per air volume.

The higher the permissible loading factors, the smaller the separator can be designed to classify the required tonnages. Permissible loading factors mean the lowest value under which a separator can still effectively and reliably fulfill its function. Coarse material loading is not relevant in this context because it has no influence on the functionality of the separator.

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A story of efficiency

Efficiency in grinding is our heritage and our future.
Since 1925.

Making grinding processes as efficient as possible is a science in itself – one to which we dedicate our entire expertise and spirit of innovation. From the invention of the first MONOBLOC diaphragm to the technical fine-tuning of the separator QDK. How we became what we are today.