With a Roller Press (Kompaktor) through compaction or dry granulation granulous bulk material is created from a powder. The Kompaktor is also called roller press, roller compactor or dry granulator. If it is used for crushing, the Kompaktor is also called high pressure roller mill.
Compacting is understood to be the compression of powder between two synchronised, counter rotating rollers. Here, adhesive forces between the product particles are created under high pressure between the rollers. If the compaction takes place alongside crushing, dry granulation is often spoken of in addition to compaction. If the secondary crushing is waived, it is known as briquetting.