1. IRON ORE 2011 PERTH REAL-TIME IMAGE ANALYSIS OF IRON ORE CORES AND DRILL CHIPS TO COMPLEMENT SPECTRAL MEASURES Thomas BELLIGOÏ Erick RAMANAIDOU & Eric PIRARD

2. IRON ORE 2011 PERTH Liege City – The cradle of coal mining, steelmaking and zinc metallurgy in Europe... Liege University – A major research partner in Belgium – 4000 researchers; 1800 PhD students – 500+ professors – Large network of spin off companies ( > 70) About Liege

3. IRON ORE 2011 PERTH – GeMMe Minerals Engineering, Materials & Environment – 3 research units; 40 + researchers » Building materials » Minerals engineering & recycling » Georesources & Geo-Imaging About Us GeMMe operates on the characterization, valorization, transformation, use and recycling of mineral materials at any stage of their life cycle.

4. IRON ORE 2011 PERTH Geometallurgy Core Scanning – RGB Imaging – µSpectral Imaging Chips Scanning – 2D – 3D Conclusions Synopsis

5. IRON ORE 2011 PERTH Needs for Computer Aided Perception – Seeing beyond human vision Spectral sensing of molecules (IR, Raman,…) Spectral sensing of elements (XRF, LIBS, …) – Measuring beyond human capabilities Modal analysis of minerals Textural information Exploration Geology

6. IRON ORE 2011 PERTH – In Situ Mapping Field work Core / Chips scanning Spatial Inference (Geostatistics) – Prediction of Ore Performance Modal analysis of minerals Porosity Textural information – Crystal size – Fracturation – Banding – … Geometallurgy

7. IRON ORE 2011 PERTH Spectral sensing – HyLogger Core Scanning Huntington et al., 2006

8. IRON ORE 2011 PERTH Spectral sensing – HyLogger RGB imaging – Dalsa 3CCD Linear Calibrated colour – Basler 1CCD Area JPG archive – Resolution 120µm – Compressed tints – Non-uniform illumination Core Scanning

9. IRON ORE 2011 PERTH Spectral sensing – HyLogger RGB imaging – Dalsa 3CCD – Basler 1CCD µSpectral imaging – SiSuCheMa 239 bands 1100 nm -2500 nm 30 µm resolution Core Scanning

10. IRON ORE 2011 PERTH RGB imaging µSpectral imaging a)ISODATA (4 clusters) b)Max Likelihood Core Image Analysis Marra MambaUnsupervised Supervised Unsupervised Supervised

11. IRON ORE 2011 PERTH 2D Particle Sizing – Occhio Zephyr 50 µm  3 mm Backlighting – 390 nm Drill Chips Scanning At line imaging No sample preparation

12. IRON ORE 2011 PERTH 2D Particle Sizing – Occhio Zephyr 50 µm  3 mm Backlighting – 390 nm 3D Particle Sizing – MiCa Prototype 50 µm  3 mm Laser – 671 nm Drill Chips Scanning At line imaging No sample preparation

13. IRON ORE 2011 PERTH 3D Particle Size & Shape Drill Chips Image Analysis El ~=0.4 / Fl~=0.25El ~=0.3 / Fl~=0.15

14. IRON ORE 2011 PERTH – Imaging is essential to gain more pertinent data for a geometallurgical evaluation of the deposit – Selected spectral band imaging has to be developed for ideal sensing of mineral/lithological mapping – 3D scanning of chips delivers interesting geotechnical information – Techniques need to be optimized for real-time use in exploration Conclusions & Perspectives

15. IRON ORE 2011 PERTH Thank You