Copper Crusher,Primary crushing systems,copper equipment for Copper is a stone element with the symbol Secondary and tertiary crushing usually are performed in surface facilities in cone crushers, although roll crushing.Np Series Impact Crushers Design. impact crusher Np series crushing etw international. the NP series impact crusher is a piece of equipment that uses an impact effect to crush materials. the rotor in this crusher uses a heavy duty design to increase the rotational inertia of this equipment, and obtains a larger crushing ratio. this ensures customers need to carry out fewer crushing stages.