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LIBERATION, SEPARATION, EXTRACTION STAGE 1 - Blasting STAGE 2 - Primary Crushing STAGE 3 - Secondary Crushing STAGE 4 - Grinding STAGE 5 - Separation by.

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Presentation on theme: "LIBERATION, SEPARATION, EXTRACTION STAGE 1 - Blasting STAGE 2 - Primary Crushing STAGE 3 - Secondary Crushing STAGE 4 - Grinding STAGE 5 - Separation by."— Presentation transcript:

1 LIBERATION, SEPARATION, EXTRACTION STAGE 1 - Blasting STAGE 2 - Primary Crushing STAGE 3 - Secondary Crushing STAGE 4 - Grinding STAGE 5 - Separation by size STAGE 6 - Separation by values STAGE 7 - Extraction of values

2 What is an Ore? Mineralized rock that can be mined/processed –At a time (temporal) –At a place (spatial) –At a profit (economic) Waste rock can become an ore Tailings can become an ore

3 Drilling and Blasting Create a top size suitable for transportation Begin the process of Liberation Factors –Drill hole diameter –Drill hole spacing and pattern –Explosive type –Delay system

4 Drilling and Blasting

5 Influence of Blasting Practices S. Morrell and W. Valery, “Influence of Feed Size on AG/SAG Mill Performance”. SAG 2001, Vancouver, Canada, pp Morrell, S., “The Influence of Feed Size on Autogenous and Semiautogenous Grinding and the Role of Blasting in its Manipulation”, Proc. 22nd International Mineral Processing Congress, Eds.: L.Lorenzen and D.J. Bradshaw, p

6 Influence of Blasting Practices S. Morrell and W. Valery, “Influence of Feed Size on AG/SAG Mill Performance”. SAG 2001, Vancouver, Canada, pp Morrell, S., “The Influence of Feed Size on Autogenous and Semiautogenous Grinding and the Role of Blasting in its Manipulation”, Proc. 22nd International Mineral Processing Congress, Eds.: L.Lorenzen and D.J. Bradshaw, p

7 Order of Processing Blasting Primary Crushing Secondary Crushing Grinding Regrinding

8 Crushing Machines

9

10 HPGR – high-pressure grinding rolls

11 High-Pressure Grinding Rolls

12 Jaw Crusher

13 Gyratory Crusher

14 Symons Cone Crusher

15 Cone Crusher Liners

16 Vibrating Screen

17 Secondary Crushing Plant

18 Alternate Secondary Crushing Plant Design

19 Open Circuit Crushing

20 Grinding Mills

21 Rod Mill – opened up for maintenance Ball Mill – overflow type

22 Conical Ball-Mill

23 Grinding Mills Bingham Canyon Grinding Mills

24 Tube Mill

25 Rod-Mill Central Peripheral Discharge

26 Rod-Mill End Peripheral Discharge

27 Rod-Mill Overflow Discharge

28 Grinding and Cyanide Leaching Musslewhite Mine, Ontario

29 Cyclo-Paks

30 Spiral and Rake Classifiers

31 Rake Classifier

32

33 Spiral Classifiers

34 Cyclone and Particle Recovery

35 Size Distribution of Soils

36 Size Distribution Curves

37 Bimodal Size Distribution

38

39 Hydrocyclone

40 Separator Partition Curves

41 Stoke’s Law

42 ABC Grinding Circuit

43 Bond Work Index Formula

44 Size Ranges in Separators

45 Electronic Sorting

46 Electrostatic Separation

47 Cross-Belt Magnetic Separator

48 Drum Magnetic Separator

49 2-stage Drum Magnetic Separator

50 Pinched Sluice

51 Riffles in a Sluice

52 Humphrey Spiral – iron ore

53 Particle Distribution in Spiral Trough

54 Reichert Cone separator

55 Fluid (pulp) Flow in a Cone Separator

56 Shaking Table

57 Statification on a Shaking Table

58 Gold on a Shaking Table

59 Jigging - stratification

60 Centrifugal Concentrator – the Falcon

61 Flotation Cell

62 Flotation Cell Agitator Design

63 Flotation Cell - Rotors

64 Separation Circuit

65 Copper Flotation Circuit

66 Downstream Processing Copper – Oxide copper treatment

67 Heap Leach Operation Installing a Plastic Membrane Liner

68 Zaldivar Copper Heap Leach

69 Copper – Downstream Processing Kidd-Creek Smelter flowsheet

70 Copper Ores – Concentrating Simplest Copper Flotation Circuit

71 Copper Ores – Concentrating Copper/Gold Flotation Circuit

72 Copper/Moly Ores – Concentrating Copper/Moly Flotation Circuit

73 Copper Ores – Concentrating Multiple Sulfide Differential Flotation Circuit

74 Copper Ores – Concentrating Mixed Oxide/Sulfide Copper Flotation Circuit

75 Copper Ores – Concentrating Copper Oxide Processing to final metal

76 Copper Ores – Concentrating Copper Oxide Processing - LPF

77 Copper Ores – Concentrating T.O.R.C.O. Processing of Copper Ores

78 Copper Anode Casting Wheel

79 Thickener - tailings

80 Thickeners - zones

81 Thickener – Area Calculation where A = thickener area (m 2 ) W = dry solids mass flow (tph) F = liquid:solid ratio of feed D = liquid:solid ratio of discharge R = settling rate (m/hr) S = liquid S.G. (kg/L)

82 Marine Tailing Disposal

83 Drum Filters

84 Disk Filter

85 Pressure Filter - Larox

86 Rotary Dryers

87 Rotary Kiln

88 Mill Control Room Carlin Mine, Nevada

89 Questions?

90 Dissolution of Gold in Cyanide Elsner's Equation

91 Precipitation of Au from Solution

92 Downstream Processing Gold processing options

93 Downstream Processing Nickel – Typical Mine/Mill Treatment

94 Downstream Processing Nickel – Matte Separation processing

95 Downstream Processing Uranium Ore processing

96 Downstream Processing Coal processing

97 Downstream Processing Coal processing

98 Downstream Processing Coal processing

99 Downstream Processing Coal processing

100 Downstream Processing Coal processing


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