Milling and sieving

In the processing of powders and granules, milling and sieving is most often required in different production stages.

Together with Frewitt and IMA PPS offers a wide range of high quality milling and sieving equipment, delivering high output and a minimum of waste. Particle sizes range from 5 cm down to 250 µm in production equipment and down to 50 nanometres for lab mills.

We deliver standalone units as well as complete production lines, including isolators for containment. For the milling and sieving equipment WIP (Washing-In-Place), CIP (Cleaning-In-Place) and SIP (Sterilization-In-Place) are available as options.

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The SMART INVERTER is the only inverter integrated into any milling system without additional equipment required. It offers a unique, two-in-one solution of handling and milling in the same machine, thereby reducing the footprint and investment by half.

The milling head connects directly to the drums, rotating them into position. A powerful torque rotates the head and up to 100-liter drums with ease. The vertical lift with a 300mm stroke also allows a wide range of drum sizes to be docked.

  • No auxiliary lifting column
  • Secure transfer of product into milling chamber
  • No physical lifting, the operator’s comfort is assured, and his safety guaranteed
  • The absence of human intervention makes the process as repetitive as possible

IMA IMILL Cone mill

Ideal for wet or dry products, IMILL can operate either as free-standing equipment or integrated in other equipment control systems. Driven by centrifugal acceleration, IMILL ensures quick calibrating milling with minimum noise.

The IMILL series of cone mills is suitable for wet or dry products processed within the pharmaceutical, food, nutraceutical and cosmetic industries. The required particle size reduction can be achieved by changing the screen and regulating the speed of the impeller.

  • Available in two versions: free-standing or integrated.
  • Product feeding by gravity or vacuum.
  • Calibrating cones available in various shapes and dimensions.
PPS A/S milling and sieving equipment from Frewitt - DelumpWitt crusher

DelumpWitt crushers

Crushers – or de-lumpers – pre-crunch hard products and lumps into fine-flowing powder. It can be used for continuous operation or serve as a standalone unit. The crusher can handle a wide range of applications, from all types of wet products to dry or sensitive products.

  • Particle size range down to 250 µm.
  • Throughput up to 11,000 kg/h depending on product and particle size.
  • High production flexibility due to the large selection of tooling.
PPS A/S milling and sieving equipment from Frewitt - ConiWitt conical mill

ConiWitt conical mill

Conical mills are ideally used for de-agglomerating and sizing granules. It can be used in any type of milling process, including milling of temperature-sensitive products or potentially explosive substances. Large selection of milling elements is available for flexible application.

  • Particle size range from 5 cm to 150 µm (lab scale 10 mm-150 µm).
  • Production volume from 500 to 5,000 kg/h.
  • Standalone unit or part of a complete production plant.
PPS A/S milling and sieving equipment from Frewitt - HammerWitt hammer mill

HammerWitt hammer mill

Hammer mills are used for milling and pulverization of hard, crystalline, and fibre-rich products. The hammer mill is suitable for laboratory applications, small batch production as well as large capacity production. It is designed to ensure optimum production in high-containment environments.

  • Particle size range 2 cm to 30 µm (lab scale 10 mm-30 µm).
  • Processing throughput up to 5,000 kg/h.
  • Broad range of applications, from all types of wet to dry powders.
PPS A/S milling and sieving equipment from Frewitt - TurboWitt rotating sieve

TurboWitt rotating sieve mill

The rotating sieve drum gently and efficiently processes the product owing to the centrifugal forces and the two changeable stator arms. It is ideal for homogenizing and control-sieving granules. It comes as standalone unit, inline, or as integration in complete plants.

  • Particle size range up to 150 µm (lab scale 10 mm-150 µm).
  • Throughput from 1,000 to 25,000 kg/h.
  • The modular design offers high production flexibility.
PPS A/S milling and sieving equipment from Frewitt - OscilloWitt oscillating sieve

OscilloWitt oscillating sieve mill

The oscillating sieve mill is used for milling and de-agglomeration of products that are heat sensitive or difficult to process. Highly flexible production offered through the selection of oscillatory or rotary modes as well as the broad range of supplementary equipment.

  • Particle size range 5 cm to 250 µm (lab scale 20 mm-250 µm).
  • Production volume up to 1,000 kg/h.
  • Handles most applications including sensitive powders.
PPS A/S milling and sieving equipment from Frewitt - NanoWitt lab mill

NanoWitt lab mill

NanoWitt lab mill is designed specifically for wet nano milling of pharmaceutical products down to 50 nanometres. It operates with high efficiency and offers multiple operation modes (batch, semi-batch for filling and emptying, external recirculation). The milling head can be easily integrated into a rigid or flexible isolator.

  • Particle size range down to 50 nanometer.
  • Processing volume from few milligrams up to 1.5 kg of solids.
  • Easy integration and quick setup in any lab.

Learn more about the Frewitt NanoWitt by downloading this white paper.

PPS A/S milling and sieving equipment from Frewitt - Pinmill lab mill

PinMill lab mill

The pin mill is specially designed for pulverizing hard or crystalline products to particles down to sizes of 10 µm. It is ideal for small-scale lab quantities of 50 g to 1 kg, but also allows for pilot-scale batch sizes of 50 g to 30 kg. Milling heads are easily interchanged and can be integrated into a rigid or flexible isolator.

  • Particle size range down to 10 µm.
  • Production volume from 50 g to 30 kg/h.
  • Scale-up guarantee to Frewitt FreDrive production equipment.
PPS A/S Service & Aftersales solutions for customers

PPS Service & Aftersales

Uniquely for the industry PPS has its own service department, which is of great benefit to our customers. PPS service department has specially trained technicians with the highest expertise and experience. We offer a long list of services, including:

  • Installation and renovation of existing equipment.
  • Design of complete solutions; everything from the requirements specifications and logistics, to execution and validation.
  • Competent feedback on automation solutions or other type of production optimization.
  • Installing and/or moving entire production or packaging lines.
  • Training of technical personnel and operators in optimal use of the installed equipment.
  • Tailor-made service and aftersales agreements for ongoing maintenance as well as assistance in case of breakdown.

In addition, PPS delivers spare parts and consumables directly to our customers from own stock. Having our own stock ensures fast and efficient delivery, which minimizes any production downtime for our customers.

If you want to know more about our service department, please contact us directly or get more information here.