<span class="green">QDK-K </span>the moist <br />material separator

QDK-K the moist
material separator

Separate damp materials with the qdk-k

The dynamic coal separator QDK-K is used where materials with high feed moisture are ground. The vertical position of its centrally-positioned feeding chute prevents the damp material from sticking. The material to be ground thus goes directly to the grinding table of the vertical mill. The DSK is often used for the separation of coal or petcoke, and provides a top cut of up to 20 µm.

Moist product
does not stick to separator
Easy integration
in vertical mill
wear-free
confined air seal

Technical Details

  • Suitable for products with high feed moisture, e.g. solid fuels or petcoke
  • Top cut up to 15 µm
  • Constant separation conditions in entire separating zone
  • Air flow and speed of the rotating cage can be adjusted according to the required finish product
  • Wear-free confined air seal for rotating cage
  • Convenient maintenance thanks to large inspection doors for easy access to motor and bearing cartridge
  • Also available in an impact-resistant version (e.g. for separation of explosive materials

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.

Get your 360°Mill Check now!

The elimination of bottlenecks can lead to significant energy savings. 

Let's find your bottlenecks.

Millcheck Batch
  • Process optimized mills durable, robust and efficient.

  • High quality Diaphragms

    for the optimal equipment of your ball mill

  • Complementary products

    for your process

  • Shell linings with innovative shape 

    for dynamic grinding processes.

Our service

AT YOUR SITE. WITH SERVICE EXCELLENCE FOR NEW AND EXISTING PLANTS.

Competence Center

Precise analysis for the perfect result.

We analyse your product to design the most efficient grinding plant.

  • Technology center for material tests 
  • Laboratory for material analysis
Christian Pfeiffer pilot plant
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.