Geometallurgy · January 2026
Predicting Comminution Parameters from Lump Samples
A lump test program on samples from a greenfield copper project, with MPT predictions benchmarked against standard comminution tests.
- Project
- Greenfield copper project
- Location
- Confidential
- Application
- Comminution
- Samples
- Lump samples
- Compared against
- SMC (A×b, DWi), SAGDesign, Bond ball mill work index
PaperFrom Validation in a Greenfield Copper Project to Continuous Testing with the Minpraxis Tester · CMP 2026, Ottawa
Read the paperContext
For a large greenfield copper project, the MPT was used to test lump samples across a range of size fractions.
The Work
Each lump was sized automatically and tested individually, with no product sieving. MPT predictions were compared with the project's existing comminution test results.
Results
MPT predictions compared well with the project's standard comminution tests, including drop weight (A×b, DWi), SAGDesign and Bond ball mill work index. On the strength of these results, the client moved to on-site trials of the MPT on drill core.
