Crushers part 1.pptx it take about limestone

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1. Crusher part I

2. Mechanical Reduction Methods Impact Attrition Shear Compression

3. In crushing terminology, impact refers to the sharp, instantaneous collision of one moving object against another. Impact:

4. As the name implies, crushing by compression is done between two surfaces, with the work being done by one or both surfaces. Jaw crushers using this method of compression are suitable for reducing extremely hard and abrasive rock. Compression:

5. Shear consists of a trimming or cleaving action rather than the rubbing action associated with attrition. Shear is usually combined with other methods . For example, single-roll crushers employ shear together with impact and compression. Shear:

6. Attrition is a term applied to the reduction of materials by scrubbing it between two hard surfaces. Hammer crushers operate with close clearances between the hammers and the screen bars , and they reduce by attrition combined with shear and impact reduction. Though attrition consumes more power and increases wear on hammers and screen bars, it is practical for crushing less abrasive materials such as pure limestone and coal. Attrition:

7. Types of Crushers

8. Crusher Compression Impact Impact Hammer Jaw Roller Gyratory Continuously Working Machines Intermittently Working Machines

9. Jaw Crusher Toggle Crusher

10. Jaw Crusher Toggle Crusher

11. Toggle Crusher Jaw Crusher

12. Single Toggle Jaw Crusher

13. Toggle Crusher In motion Jaw Crusher

14. Double Toggle Jaw Crusher A: Swing jaw B: Stationary jaw C: Pivot point D: Double set of toggles E: Offset eccentric shaft

15. Double Toggle Jaw Crusher

16. Double Toggle Jaw Crusher

17. Offset eccentric shaft

18. Function Compressive action Action Intermittent Reduction ratio 6:1 to 8:1 Capacity Low capacity ≈ 300 T/H Application Primary crusher for very hard abrasive materials of low moisture content . single toggle crusher is better for inclusion of stick materials but , higher wear than the double toggle . Jaw crusher highlights

19. Cone Crusher (Gyratory)

20. (Gyratory) Cone Crusher

21. Cone Crusher

22. Gyratory Crusher

23. Crushing Action of a Gyratory Crusher

24. Gyratory crusher highlights Function Compressive action Action Intermittent Reduction 12:1 to 15:1 Capacity 6000 T/H Application Primary crusher for very hard abrasive material of low moisture

25. Single Roller Crusher

26. Double Roller Crusher

27. Double Roller Crusher

28. Double Roller Crusher

29. 3D View -Double Roller Crusher

30. Hammer Crusher

31. Hammer Crushers with Feed Rollers

32. Hammer Crusher

33. Hammer Crusher

34. Hammer Crusher

35. Twin-rotor hammer crusher Titan ( O & K)

36. Twin-rotor hammer crusher type Titan ( O. & K.)

37. Rotor

38. Hammers Different shapes

39. Screen / Grids

40. Hammers

41. Grizzly with elliptical rotating rollers

42. Mogensen sizer (illustration of its principle)

43. For Changing worn Parts Auxiliary Equipment

44. Impact Crushers Impact Crusher Compound

45. Hammer Crusher Highlights Function : Impact & percussive action Action : Continues Reduction ratio : 50:1 Capacity : 2000 t/h for the double rotor Application : Primary reduction of medium hard to hard material

46. Single Rotor Impact Crusher

47. Single Rotor Impact Crusher

48. Compound Impact Crusher “Hazemag”

49. Single Impeller crushed-breaker plates & Breaker bars

50. Impact action of a double Impeller impact

51. Double Impeller Impact Crusher with Housing

52. Impact Crusher Highlights Function Impact surface Action Continues Reduction ratio single 6:1 and 20:1 compound 60:1 Capacity 1500T/h Application Suited for brittle hard and medium hard material , the single rotor used as primary crusher only .