Bulk Solids, Mining, Aggregates & Material Processing worked example

Feeder Rate at 99% target feeder rate accuracy: a worked example in bulk solids, mining, aggregates & material processing

What does the result look like when target feeder rate accuracy reaches 99%? The full calculation is worked below with real intermediate numbers. a plant team is reviewing feeder rate for bulk solids, mining, aggregates, and material processing and needs a clear feeder rate for production, quality, capacity, maintenance, purchasing, or costing decisions

The inputs for this scenario

  • Material delivered at the commanded set rate: 850 tons (unchanged)
  • Total material fed in the same period: 1,000 tons (unchanged)
  • Target feeder rate accuracy: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (Feeder Rate = feeder rate accepted or affected material ÷ total ore, aggregate, powder, sand, gravel, fines, or bulk solid in same period × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 85 % for feeder rate, the number this scenario is built around.
  • At this operating point the engine returns 14 points for feeder rate gap to target.
  • At this operating point the engine returns 850 count for feeder rate accepted or affected material.
  • At this operating point the engine returns 1,000 count for total ore, aggregate, powder, sand, gravel, fines, or bulk solid in same period.

How this compares with the baseline

  • Against the tool's baseline example, where target feeder rate accuracy sits at 95% and the headline result is 85 %, this scenario lands almost exactly on the baseline at 85 %.
  • A figure at this level is achievable when target feeder rate accuracy is genuinely sustained, not just peaked for a shift. It is an aggregate over the period, so brief but severe rate excursions can be averaged away; it shows how much was on-rate, not when or why it strayed.

Results at a glance

  • Feeder Rate: 85 % (headline result)
  • Feeder Rate gap to target: 14 points
  • Feeder Rate accepted or affected material: 850 count
  • Total ore, aggregate, powder, sand, gravel, fines, or bulk solid in same period: 1,000 count

Run it with your numbers

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

Last reviewed 2026-05-12.