Bulk Solids, Mining, Aggregates & Material Processing worked example

Screen Deck Utilization at 99% target screen deck utilization: a worked example

Push target screen deck utilization up to 99% and the picture changes. This example computes every intermediate figure at that operating point. a plant team is reviewing screen deck utilization for bulk solids, mining, aggregates, and material processing and needs a clear screen deck utilization for production, quality, capacity, maintenance, purchasing, or costing decisions

The inputs for this scenario

  • Saleable on-spec product tonnage from this deck: 850 tons (unchanged)
  • Total feed tonnage onto the screen deck: 1,000 tons (unchanged)
  • Target screen deck utilization: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Screen Deck Utilization = screen deck utilization accepted or affected material ÷ total screen feed, oversize, undersize, fines, or saleable aggregate in same period × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 85 % for screen deck utilization, the number this scenario is built around.
  • At this operating point the engine returns 14 points for screen deck utilization gap to target.
  • At this operating point the engine returns 850 count for screen deck utilization accepted or affected material.
  • At this operating point the engine returns 1,000 count for total screen feed, oversize, undersize, fines, or saleable aggregate in same period.

How this compares with the baseline

  • Against the tool's baseline example, where target screen deck utilization sits at 95% and the headline result is 85 %, this scenario lands almost exactly on the baseline at 85 %.
  • It computes the percentage of total deck feed that becomes accepted on-spec product, and the point gap to your utilization target. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Screen Deck Utilization: 85 % (headline result)
  • Screen Deck Utilization gap to target: 14 points
  • Screen Deck Utilization accepted or affected material: 850 count
  • Total screen feed, oversize, undersize, fines, or saleable aggregate in same period: 1,000 count

Run it with your numbers

  • Every input above is editable in the live Screen Deck Utilization calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.