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Individual ball mills – proven since 1864

Hundreds of ball mills - made by Pfeiffer to suit the customers’ particular requirements - operating all over the world. In fact we design, build and install ball mills which are specially adapted to grind hard and even extremely abrasive materials.

MRD / MRE ball mill

Advantages of the ball mill

Adjustable grain size distribution

When operating on the open circuit principle, the product fineness and grain size distribution are adjusted via the peripheral material discharge. In case of circuit grinding, these parameters are set with the high efficiency separator.

Highest availability

Simple and rigid design, wear resistant lining, minor maintenance requirement.

Design principle and technical data

Select application envisaged

Feed material
  • Quicklime and lime hydrate
  • Other materials
feed material
dedusting
feed material
ground product
grinding balls
adjustable discharge slots
F
D
F
G
1
2
Ffeed material
Ddedusting
Gground product
1grinding balls
2adjustable discharge slots

Activate the markers for further information

Working principle

Fed into the mill through one or both bearing trunnions, the material is ground by impact and friction from the balls. The ground product is discharged from the mill through discharge slots provided in the mill tube, through a discharge wall or through the end trunnion. The design and setting of the discharge slots or discharge wall determine the grain size distribution of the ground product. When performing circuit grinding, the product fineness can be set at the separator. In case of coarse grinding where a downstream screening machine is provided, the product fineness can be preselected by providing a specific mesh width on the screening machine.

Technical data
Throughput rate up to 50 t/h
Feed size up to 30 mm
Target fineness degrees 10 µm
Feed material lime hydrate
feed material
dedusting
feed material
ground product
grinding balls
adjustable discharge slots
F
D
F
G
1
2
Ffeed material
Ddedusting
Gground product
1Mahlkörper
2adjustable discharge slots

Activate the markers for further information

Working principle

Fed into the mill through one or both bearing trunnions, the material is ground by impact and friction from the balls. The ground product is discharged from the mill through discharge slots provided in the mill tube, through a discharge wall or through the end trunnion. The design and setting of the discharge slots or discharge wall determine the grain size distribution of the ground product. When performing circuit grinding, the product fineness can be set at the separator. In case of coarse grinding where a downstream screening machine is provided, the product fineness can be preselected by providing a specific mesh width on the screening machine.

Technical data
Throughput rate up to 50 t/h
Feed size up to 10 mm
Feed moisture dry
Target fineness degrees 10 µm - 5 mm
Feed material roasted zinc blende