Q. How does a stone crusher work?

Answer

By applying and releasing pressure in opposite directions material is crushed between a stationary and a gyrating plate. The final product is then tiny enough to squeeze through the opening. A gyratory crusher's main component is a solid cone mounted on an eccentric shaft which rotates inside a conical or vertically sloping hollow body. When two crushing surfaces get close enough to each other the material between them is crushed and the resulting particles are discharged through a lower hole. Hammer mills can be used as a primary crusher which does not require any more crushing or as a secondary crusher for the material that has already been crushed. They find extensive usage in a variety of applications requiring the crushing of heavy metal scrap.