Pump hydraulics · hydrocyclone cut-size curves · mill-liner wear rates · crushing CSS guidance — numbers process engineers can put in a bid package.
Illustrative KPI cards from a typical hard-rock mill-discharge + classification package. Request site-matched curves before freezing a PO.
Selection packs pair hydraulic curves with process constraints: feed size into the crushing train, jaw opening and discharge opening on the secondary stage, screen vibration frequency, and the slurry SG that moves the pump BEP. Expert notes call out when a duty sits outside the published envelope — for example, froth fractions that need specialized impellers, or tailings lines where pipe friction dominates total dynamic head.
ISO 9001 wet-end manufacturing line qualification for high-chrome castings.
MSHA-aligned mill-floor guarding and lockout documentation pack released.
Cut-size laboratory correlation program for flotation feed cyclones launched.
ISO 4406 bearing-oil cleanliness standard applied to all factory pump builds.
Sensorized shell-thickness ports added to flagship mill-discharge frames.
Target: digital duty twin available with every contracted circuit package.
Limitations are printed beside the charts: laboratory cut-size tests use controlled feed and may understate site variability; wear-rate medians exclude tramp-metal events; and NPSH guidelines assume sump design meets the drawing package. If your site cannot meet those assumptions, request a site-matched recalculation before the purchase order freezes impeller diameter or cyclone apex size.
On the wet-versus-dry processing debate, WeirFlow Mining selection packs stay honest: wet classification and flotation remain the recovery path for most sulfide and iron-ore fines, while arid sites may prefer dry magnetic routes that change pump and cyclone demand entirely. Charts therefore state the process water assumption up front so capital and water infrastructure are sized together.
When ROM hardness and product shape conflict, buyers still argue jaw crusher versus impact crusher. Jaw machines absorb feed-size spikes with a wider jaw opening, lower maintenance skill demand and a discharge opening that tracks CSS in millimeters — the practical primary for most hard-rock mills. Impact machines deliver higher cubicity for road-stone and asphalt aggregate, but liner life shortens and vibration frequency on the secondary screen often rises with clay or wet fines. Selection packs print both sides with expected output capacity (t/h) and hydraulic system pressure notes for any slurry transfer after the crusher, so capital and wear budgets are sized together.
PDF bundle with duty charts, cut-size guides and expert matching notes for slurry and crushing circuits.