More impact energy in the 1st grinding chamber

The progressive lifting shape of the lining is ideal for the grinding process in the first compartment. Here the material is ground using grinding balls with a larger diameter. The activator lining transports the grinding balls upwards with minimum slippage, thus producing optimum impact energy.

OPTIMAL IMPACT ENERGY
AND THUS CRUSHING EFFECT
INDIVIDUAL DESIGN OF THE LIFTING PROFILE
TO THE MILL AND THE PRODUCT
THE FUNCTION OF THE LIFTING PROFILE REMAINS INTACT
OVER THE ENTIRE SERVICE LIFE OF THE SHELL LINING

Technical details

  • Greater lifting heights produce higher impact energy
  • Distribution of the ball load, so that the material is moved effectively into the material bed
  • Controlled wear of the lining as a result of the grinding balls rolling over the lifters: The profile and effectiveness of the liner remain unchanged
Armor

more than 500 
mill shell linings
installed worldwide

Aren´t shell linings just wear parts for mill tube protection?

From our point of view, quite the opposite. The profiling of the shell lining plates creates the movement of the ball charge, which causes the grinding of the material. It is therefore essential for effective grinding in the mill and far more than just a wear part. The exact profile shape has to be defined depending on the ball sizes used, the rotation pace and the mill diameter. And thus, the shell lining has to be adapted to each mill individually.

Why do shell linings have different chromium contents?

The plates of the shell linings must not break during operation. If rough operating conditions are to be expected, a hard facing with a lower chromium content should be used. The chromium content often influences the service life of the hard facing, but not always. The ideal selection of the casting material is part of the standard of our machine and plant design. The design depends on the individual application conditions.

What is the best fastening system for the shell lining?

Any hole on the mill shell weakens the shell structure and is a potential leakage point. In addition, noise emission during operation is increased. Nevertheless, each type of fastening has its justification.

For coarse grinding in the first chamber, we prefer screwed solutions for DIN plates to ensure maximum availability and operational reliability. Alternative systems, with few or without screws, are used for fine grinding chambers.

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  • Process optimized mills durable, robust and efficient.

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  • Complementary products

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  • Shell linings with innovative shape 

    for dynamic grinding processes.

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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.