Examples
Examples
Try the starting example
- Payable recovered material value (USD/kg)
- 10
- Recovery fraction
- 0.9
- Processing cost (USD/tonne ore)
- 50
- Illustrative break-even feed grade (%)
- 0.555556
Try another scenario
- Payable recovered material value (USD/kg)
- 11
- Recovery fraction
- 0.9
- Processing cost (USD/tonne ore)
- 50
- Illustrative break-even feed grade (%)
- 0.505051
Calculation method
Calculation method
Illustrative break-even feed grade (%)
Cost per tonne / (1000kg×material value×recovery) ×100; ignores mining, capital and all other charges.
Symbols and units
- a
- Payable recovered material value (USD/kg)
- b
- Recovery fraction
- c
- Processing cost (USD/tonne ore)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Unit value, recovery, supplied processing costs. Returns Economic threshold under assumptions. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Payable recovered material value (USD/kg): minimum 1e-12, maximum 1000000000000.0. Recovery fraction: minimum 1e-12, maximum 1. Processing cost (USD/tonne ore): minimum 0, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.