Calix Ltd. · ASX:CXL

Calix — Future Cement Conference 2011

19 slides from Calix's conference presentation, Feb 8, 2011

1. Slide 1: Flash Calcining Technology for Cementitious Binders and Additives

   Flash Calcining Technology for Cementitious Binders and Additives Julian Dinsdale, Peter Tirzins, Mark Sceats 8th February 2011 Future Cement Conference London, UK 1

2. Slide 2: About Calix Limited

   About Calix Limited CALIX LIMITED  Incorporated in 2005 – to commercialise 10 years previous Flash Calcining Research & Development  Public Unlisted Company in Australia  Sydney, NSW based  Plant operation in Bacchus Marsh, Victoria  www.calix.com.au Feb 2011 R 0.0.1 2

3. Slide 3: Development Program

   Development Program  Developers and Suppliers of Flash Calciners  Flash Calcining – Carbonates – Limestone, Dolomite, Magnesite – Other – Gypsum, Kaolin, Bauxite  Steam – Catalyst – Solids Transport – Heat Transfer Agent  Separation of Fuel Combustion and Calcination – Radiant Heat Transfer – Vo

4. Slide 4: CFC Schematic

   CFC Schematic Catalytic Flash Calcination (CFC) Schematic Feb 2011 R 0.0.1 4

5. Slide 5: CFC Process

   CFC Process  Pre-grind minerals to < 150 microns  Entrain particles in steam or air  Pre-heat to 300 – 500 deg C  Tangential Injection of Particles & Steam into Calciner  Flash Calcine at 550 – 750 deg C (Dolomite & Magnesite)  Process resident time 2-3 seconds  Particle Extraction by Cyclone

6. Slide 6: Bacchus Marsh Plant

   Bacchus Marsh Plant Feb 2011 R 0.0.1 6

7. Slide 7: Bacchus Marsh Plant

   Bacchus Marsh Plant Feb 2011 R 0.0.1 7

8. Slide 8: Carbonate Results

   Carbonate Results CFC Calciner produces highly active MgO and Semidolime (MgO.CaCO3) –Steam acts as a Catalyst –Process does not sinter product –Extracts up to 98% of CO2 from MgCO3 in Magnesite or Dolomite –Controlled Calcination of CaCO3 in Dolomite –Very large surface areas – up to 160 m2/gm –Par

9. Slide 9: SEM and Particle Sizes – Magnesia

   SEM and Particle Sizes – Magnesia • 10 micron scale showing disorder and decrepitation • 100 nm scale showing micropores • High Surface Area Surface Areas BET BJH m2 gm-1 Magnesite 2.9 3.2 CFC Magnesia 111 160 Feb 2011 R 0.0.1 9

10. Slide 10: SEM and Particle Sizes – Magnesia

    SEM and Particle Sizes – Magnesia • 10 micron scale showing disorder and decrepitation • 100 nm scale showing micropores Surface Areas BET BJH m2 gm-1 Magnesite 2.9 3.2 CFC Magnesia 111 160 Feb 2011 R 0.0.1 10

11. Slide 11: Particle Sizes and XRD Nano-Disorder

    Particle Sizes and XRD Nano-Disorder PR0027C-7 700 600 500 2O=50. 870 °, d=1.7935 2O=9. 445 °,d=9.356 2O=42. 870 °, d=2.1079 Lin (Counts) 400 2O=31. 003 °, d=2.8821 2O=62. 203 °, d=1.4912 300 2O=28. 650 °, d=3.113 2O=41. 236 °, d=2.1875 2O=26. 650 °, d=3.342 2O=36. 554 °, d=2.4562 2O=32. 683 °, d=2.

12. Slide 12: Cementitious Products

    Cementitious Products  At Bacchus Marsh, Calix has an R&D facility which is trialing – Mixtures of fillers and active MgO – Mixtures of fillers and Semidolime – Active MgO into Portland Cement – Encapsulation of CO2 into end products  Undertaking comparative compressive & tensile testing Feb 2011

13. Slide 13: Compressive Strength MPa

    Binders - Semidolime & Portland Cement 7 Day Compressive Strength of OPC and Semidolime (MgO.CaCO3) Blocks 18 Compressive Strength MPa 17 16 Semidolime OPC 15 14 13 12 11 10 Mixture OPC/Sand = 450/1350 Semidolime/Sand = 800/800 Feb 2011 R 0.0.1 13

14. Slide 14: Results from Tests

    Additives: Flash Calcined Metakaolin & Portland Cement  Results from Tests Mixture Feb 2011 14 Cement: 337.5 Metakaolin:R 0.0.1 112.5 Sand: 1350

15. Slide 15: Indicative Energy Consumption GJ per tonne

    Indicative Energy Consumption Energy Use (GJ per tonne) 5 4.57 4.53 4.41 5 4 4 GJ per tonne 3 Energy Efficiency 3 2 1.70 80% 2 69.8% 67.8% 70% 65.8% 1 60% 1 49.1% - 50% Lime Dolime Semidolime Magnesia 40% 30% 20% 10% 0% Lime Dolime Semidolime Magnesia Feb 2011 R 0.0.1 15

16. Slide 16: Indicative Capex

    Indicative Capex Unit Capex (EPC) Price $ per (tonne pa) 1000 k tpa Plant - Lime $350 $295 $300 $259 $250 $218 $195 $200 $150 $100 $50 $- Suspension Flash Calciner Double shaft kiln Calix CFC precalciner Feb 2011 R 0.0.1 16

17. Slide 17: Indicative Cost of Lime Production

    Indicative Cost of Lime Production Lime Costs ($ per tonne)  +40%/-20% costing on 1000 ktpa plant average $120  Compared to existing $100 calcination technologies from data published by the IEA $80  Calix potential benefits lie in AU$ per tonne the CFC product unique $60 Fixed Operating Cost prop

18. Slide 18: Plant Construction

    Plant Construction  By November 2011 – 20,000 tpa plant producing Lime or 40,000 tpa Semidolime – Target <4.6GJ/tonne (Lime) and <2GJ/tonne (Semidolime) – Negligible CO, NOx – CO2 Capture  Design scalability in increments of 80,000 tpa to plant sizes of 400,000 tpa Feb 2011 R 0.0.1 18

19. Slide 19: Conclusions

    Conclusions Catalytic Flash Calcination has a significant role to play in the future of the Cement Industry, with its ability to:- – Capture CO2 – Minimise CO and NOx emissions – Enable Rapid systems deployment – Reduce Energy consumption – Consistent with product quality and environmental control –

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