Refractories, Furnace Linings & Foundry Consumables worked example

Ramming Mix Usage at 61% installation transfer efficiency: a worked example

Suppose installation transfer efficiency falls to 61%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Ramming Mix Usage estimates how much dry vibratable or plastic ramming mix a foundry must order to line an induction furnace, ladle, or trough — accounting for the material lost to rebound, spillage, and off-cuts during installation.

The inputs for this scenario

  • Lining volume or surface area to cover: 500 units (held at the documented default)
  • Ramming mix consumption per unit of coverage: 0.08 units (held at the documented default)
  • Installation transfer efficiency (yield): 61 % (the input this scenario stresses; the baseline uses 85)

Working through the calculation

  • The calculation starts from the formula this tool documents: Required ramming mix usage = covered amount × use per unit ÷ transfer efficiency.
  • Required quantity works out to 65.57 units at these inputs, and this is the headline figure for the scenario.
  • Theoretical amount works out to 40 units at these inputs.
  • Loss allowance works out to 25.57 units at these inputs.
  • Efficiency works out to 61 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where installation transfer efficiency sits at 85% and the headline result is 47.06 units, this scenario comes in 39.34% above the baseline at 65.57 units.
  • It divides the theoretical mix needed (coverage x consumption per unit) by the transfer efficiency to give the real quantity to order, then isolates the loss allowance. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required quantity: 65.57 units (headline result)
  • Theoretical amount: 40 units
  • Loss allowance: 25.57 units
  • Efficiency: 61 %

Run it with your numbers

  • To rerun this with your own numbers, open the live Ramming Mix Usage calculator, set installation transfer efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.