Principle of End Runner Mill
End Runner Mill Similar to the edge runner mill, operates on the principle of crushing and grinding.
However, it uses a pestle and mortar setup.
Construction
Mortar: Bowl-shaped grinding surface.
Pestle: Heavy cylindrical or conical grinding tool.
Feed Mechanism: Manual or automated hopper for material input.
Discharge Mechanism: Outlet for processed material.
Working
Material is placed in the mortar.
The pestle rotates or oscillates, crushing and grinding the material.
Continuous rotation or oscillation ensures thorough grinding and mixing.
Processed material is discharged from the outlet.
Uses
Grinding and mixing of pastes, ointments, and powders in the pharmaceutical and cosmetic industries.
Merits
Simple and effective design.
Suitable for small-scale production.
Effective for both grinding and mixing.
Demerits
Limited to small quantities.
High labor intensity for manual operation.
Wear of the pestle and mortar.