Principle of Edge Runner Mill:
- Operates on the principle of crushing and grinding.
- Heavy rollers grind material by rolling over it.
Construction of Edge Runner Mill:
- Grinding Surface: Flat or slightly concave surface.
- Rollers: Heavy cylindrical rollers that rotate around a central pivot.
- Feed Mechanism: Hopper for material input.
- Discharge Mechanism: Outlet for processed material.
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Working:
- Material is fed onto the grinding surface.
- Rollers rotate around the pivot, crushing and grinding the material by rolling over it.
- The continuous action ensures thorough grinding and mixing.
- Processed material is discharged from the outlet.
Uses:
- Grinding and mixing of minerals, ores, chemicals, and pharmaceuticals.
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Merits:
- Simple and robust design.
- Effective for grinding and mixing.
- Suitable for large-scale production.
Demerits:
- High energy consumption.
- Wear of rollers and grinding surface.
- Limited to materials that can withstand high pressure.
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