A well-designed crushing plant layout balances the capital versus operating cost over mine life. Buildings, infrastructure, and major equipment items, represent the major cost elements of a crushing plant design. The designer must prepare a layout that suits the design criteria, flowsheet and selected equipment in the most economical possible configuration. Its important to keep structural costs down, to design for ease of maintenance and operation, and to combine best practices with advances in fabrication and erection. Input from an experienced mining plant structural engineer can be very helpful.Crushing circuits and ancillaries have not changed a great deal over the years, so Keep It Simple is still the best way to crusher plant design. Owners may wonder why the design of head chutes hasnt changed in decades, but the explanation is simple: its because the old, well-proven approaches still work best. On the other hand, its dangerous to assume that a layout that works we ll at one mine will work just as well, or at all, at another.
Provisions must be made for the replacement of wear parts (e.g., install man-doors on head chutes with flood lighting inside the chute.) Faster part replacement means less downtime.
Layout tools can include cut-and-paste arrangements, 2D arrangements fitted onto site topography, or 3D CAD to superimpose the design on the selected site. The choice of tool depends on whether the work is being done at the prefeasibility, feasibility or detailed engineering level, as well as on the accuracy required of any associated cost estimate. The best designs are developed using basic approaches and tools: site visits, discussions with mine personnel, sketches, and cutand-paste layouts. This writer believes that only after the initial concepts have been developed and optimized does 3D CAD have a role to play.
Different industries have different approaches to crushing plant design. The standard approach in the oil sands industry is to use MicroStation 3D CAD from the start; in some cases, the finalization of a system design (hopper, feeder, sizer crusher, and takeaway conveyor) has taken as much as two years, because of the uniqueness of the application. A similar design in the hard-rock mining industry takes from four to six months.
crushing plant layout
crushing plant design
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