It consists of a wheel-like heavy roller and a pan (circular container). It is a machine that crushes raw material for crushing in the rotating bread by stepping on the roller. Roller also rotates by friction with pulverized raw material. The crushing material stamped on the roller is subject to compression due to the own weight of the roller, frictional force that shear force and crushed raw materials rub against each other. Also, since the relative speed differs between the inside and the outside of the roller, the twisting action also works on the pulverized material. Since it has a mixing action at the same time as pulverizing action, it may be used for mixing. Monokaki (scraper) scrapes pulverized raw materials to make a flow, and discharges finely-divided raw materials as a product.
Recycling slag etc.