1. Product Portfolio August 2009

3. Access to and shares the IP of M C Process, a South African Process Equipment company with a large installed base

4. Owner Mark Craddock

5. IP shared and free flowing

6. Established design base

7. Established in African industry

9. Solvent Extraction plants

10. Thickeners

11. Flocculant plants

13. What is Solvent Extraction (SX)? Recovery of a valuable metal Use of immiscible Organic and Aqueous solutions Range of distribution of the valuable metal between the two allows for a certain degree of separation.

14. General SX circuit EXTRACT Solvent Aqueous Aqueous Feed Extract Raffinate Loaded Solvent SCRUB Solvent Aqueous Solvent Feed Scrub Solution Scrubbed Solvent Scrub Raffinate STRIP Solvent Aqueous Strip Solution Strip Liquor Stripped Solvent Solvent Equilibration Figure 1: The Practical Process of Solvent Extraction , (“Solvent Extraction Principles and Applications to Process Metallurgy”, G.M Ritcey, 2006)

18. Assist with erection and commissioning including plant trouble shooting.

19. HAZOP and design review.

20. Cost effective modular installation.

21. Experience in SX fire prevention and design.

23. Minimize air entrainment.

24. Designed to Reduced fire risk – Minimal organic mist.

26. Adequate separation of aqueous and organic phase.

28. Thickeners

30. Audit of our design by Anglo Coal 2008

33. Centrifugal flow in the feed well

34. Bed height determination

35. Adjustable launder overflow

36. Adjustable deflection plate

37. Froth remover

38. Adjustable dilution system

39. Angled deflection plate

41. Unique tank design ensures no material hold up

42. Variability in terms of head and flow

43. Reduced power requirement

44. Adjustable dilution

45. Centrifugal Feed well

47. Flocculant Plant Design Criteria Tons per Hour throughput Flocculant dosage rate Type of flocculant Hydration Period Pipe Length

48. Design Developments

49. Attrition Scrubbers

52. Lime Slaking.

53. Breakdown of Kimberlitic Clays and Diamond coatings.

56. Distance between impeller – 10 mm.

57. Large scale machines (Conventional)

58. Distance increases from 200 mm in 300 Litre machine to over 500 mm in 20 cubic meter unit.

59. Velocity degradation over distance.

61. Smaller travel distance equates to less velocity degradation = greater impact

63. Lime Slaking – Most Efficient.

65. Thank You! Our team is ready to assist you!