subject: FINE CRUSHING(Secondary, Tertiary and Quaternary) [print this page] FINE CRUSHING(Secondary, Tertiary and Quaternary)
FINE CRUSHING(Secondary, Tertiary and Quaternary)
Fine crushing circuits can be more challenging to design than primary crusher installations. There are more equipment options, and each has different installation and maintenance requirements. The process flowsheet dictates the expected performance of the items in the flow stream. The designer must configure the equipment and structures into a balanced, economical plant design. Screens, feeders, stockpiles, bins, conveyors and crushers must all be interfaced with the most economical supporting structures and buildings.
An open-circuit crusher is easier to design and lay out than a closed-circuit design, since it has fewer equipment items and structures. Provisions should be made for possible future conversion of an open-circuit plant to a closed-circuit version.
Cone crusher remain the choice for most secondary and tertiary operations, with some gyradisc and vertical-impact crushers also utilized on certain ore types. Water-flush cone crushers have been introduced in secondary and tertiary installation, which requires careful design of the water systems to and from the crusher. SBM cone crushers have three types Hydraulic cone crusher, Spring cone crusher and Symons cone crusher. If you need cone crusher, please contact us by sales@zenithcrusher.net
Most open-circuit secondary and tertiary crushers include scalping screens to remove fine material prior to the secondary crushers. Closed-circuit crushers use tertiary screens to control the final product size. In some larger installations, the secondary and tertiary crushers are located in one plant area and the screens in another. Crushers and screens in these plants have common bins feeding to the multiple crushers or screens. Most plants now have the screen feeding the fine crusher, providing for easier access to service the screens.
As with primary crushers, fine crushers must meet the design parameters listed above. Design details that are helpful to fine crusher plant layout area listed in the sections that follow.
