Gypsum, Drywall & Interior Panel Manufacturing worked example

Calcination Energy with calciner connected load of 30 kW: a worked example in gypsum, drywall & interior panel manufacturing

This scenario runs the calcination energy calculation on the strong side: calciner connected load of 30 kW, with every other input held at its documented default. Use it when reviewing flash calciner or rotary kiln operating cost to confirm whether energy cost per ton of stucco is within budget.

The inputs for this scenario

  • Calciner connected load: 30 kW (raised for this scenario; the documented default is 12)
  • Calciner runtime: 8 hr (unchanged)
  • Energy tariff: 0.12 $ / kWh (unchanged)
  • Stucco tons processed: 1,000 tons (unchanged)

Working through the calculation

  • Applying the documented formula (Total calcination energy cost = calciner connected load x runtime x energy tariff) to the inputs above produces each figure below.
  • At this operating point the engine returns 28.8 $ / ton for energy cost, the number this scenario is built around.
  • At this operating point the engine returns 240 kWh for energy used.
  • At this operating point the engine returns 0.03 $ / piece for cost per piece.
  • At this operating point the engine returns 3.6 $ / hr for hourly cost.

How this compares with the baseline

  • Against the tool's baseline example, where calciner connected load sits at 12 kW and the headline result is 11.52 $ / ton, this scenario comes in 150% above the baseline at 28.8 $ / ton.
  • Use it for shift energy tracking, comparing kettle vs. flash calciner efficiency, or quantifying the savings from a tariff change or heat-recovery upgrade. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Energy cost: 28.8 $ / ton (headline result)
  • Energy used: 240 kWh
  • Cost per piece: 0.03 $ / piece
  • Hourly cost: 3.6 $ / hr

Run it with your numbers

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

Last reviewed 2026-05-12.