The document discusses various types of size reduction equipment used in mining and manufacturing processes. It describes crushers which use compression forces to reduce large solid materials into smaller particles ranging from 150-250mm. Specific crushers covered include jaw, gyratory, and roll crushers. Grinders further reduce particle sizes down to 74-350um using different grinding mechanisms like hammer mills, ball mills, and rolling compression mills. Ultra fine grinders can process materials into micron-sized particles from 1-50um using technologies such as agitated mills or fluid energy mills. Cutting machines also aid size reduction from 2-10mm using knife, cutter, or slitter tools.

2. • Main type of size reduction equipment
 Crushers
 Grinders
 Ultra fine grinders
 Cutting machine

3. Crusher
• Crusher are slow speed machine for force reduction of large
quantities of solid.
• particle size range : ( 150mm-250mm )
• crusher are classified according to the stage of crushing.
1) Primary
2) secondary

4. Types of crushers
• jaw crusher
• Gyratory crusher
• Roll crusher
1) Smooth roll crusher
2) Toothed roll crusher

5. Jaw crusher
• Jaw crushers operate by allowing stone to flow into the space
between two jaws, one of which is stationary while the other is
movable.
• The distance between the jaws diminishes as the stone travels
downward under the effect of gravity and the motion of the
movable jaw, until the stone ultimately passes through the
lower opening
• Jaw Crusher.mp4

6. Gyratory crusher
• Gyratory crushers provide continuous crushing action and are used
for both primary and secondary crushing of hard, tough, abrasive
rock.
• Gyratory Standard Cone crushers are used as secondary crushers.
• Gyratory crusher are capable of producing large quantities of
uniformly fine crushed stone.
• Gyratory Crusher.mp4

7. Roll crusher
• Roll crushers are used for producing additional reductions in the
sizes of stone.
• A roll crusher consists of a heavy cast-iron frame equipped with
either one or more hard-steel rolls, each mounted on a separate
horizontal shaft.
• For any given setting for jaw or roll crusher approximately 15% of
the total amount passing through the crusher will be larger than the
setting.
• Roll crusher.mp4
 Smooth roll crusher
 Toothed roll crusher

8. Grinders
• Grinder, is any of various power tools or machine tools used for
grinding.
• particle size range : ( 74um – 350um)
 Types Of Grinders
• Hammer mills
• Rolling compression mills
• Ball mill

9. Hammer mill
• The hammer mill, which is the most widely used crusher.
• Hammer mill used for primary or secondary crushing.
• hammer mill.mp4

10. Rolling compression mill
• Rolling compression mill.mp4

11. Ball mill
• BALL MILL.mp4

12. Ultra-fine grinder
• Ultra fine grinding mill is the new type mining equipment for
making micro powders , fine powders.
• Which is widely applied in the industries of metallurgy, chemistry,
cement, construction, refectory material.
• particle size range : ( 1um – 50um).
• Eg. hammer mill, agitated mill, fluid energy mill.

13. Agitated mill
• Agitated mills.mp4

14. Fluid Energy Mills
• fluid energy mills.mp4

15. Cutting machine
• Cutting may be accomplished by single point or multi point tools.
• particle size ranges : (2mm -10mm)
• TYPES OF CUTTING MACHINE:
1) Knife
2) Cutters
3) slitters