During high-pressure grinding in roller presses coarse materials, such as cement clinker, ore or limestone, are briefly subjected to very high compressive forces. The sheets thus produced can be ground and thus reduced to the desired final particle size with minimum energy requirements.
High-pressure grinding rollers ( HPGR) are employed in various combinations with other equipment for preliminary and finish grinding. Energy savings is the most important factor for using this technology.
Depending on the grinding system used, capacity improvements of up to 250% and/or a reduction of the specific energy consumption of up to 40% can be achieved. To suit the respective application, three different types of rollers are available:
- Solid rollers
- Rollers with tires
- Rollers with segments
The following wear protection systems can be applied:
- Hardfacing by welding
- Chill casting
- Composite materials
- HEXADUR (R)
Köppern high-pressure grinding rollers are easily operated and maintained. Thanks to drive and roller components being arranged separately, the rollers can be quickly removed and replaced for maintenance needs.
Wearing parts of the gravity-type feeder can be simply replaced from the outside. Various drive systems are available. Materials presently treated in high-pressure grinding mills cover:
- Cement clinker
- Fine ore/pellet feed
- Coal and