Industrial Pulverizing Mill Rock Crushing .
The primary types of impact crushers include horizontal shaft impactors (HSI), cage mill pulverizers, and vertical shaft impactors (VSI). Cage Mills. Invented by Nathan P. Stedman, a cage mill is an internally fed impactor that crushes grinds or pulverizes many different materials to specified degrees of fineness. Hammer Mills. A hammer mill is a crusher that can grind, pulverize and crush ...