definition of coal crusher

A coal crusher is a mechanical device designed to reduce large coal chunks or lumps into smaller, more manageable sizes for processing, transportation, or combustion. It works by applying mechanical force (compression, impact, or shear) to break down coal into desired particle sizes.

Types of Coal Crushers:
1. Primary Crushers (e.g., Jaw Crusher, Gyratory Crusher)
– Used for initial coarse crushing of large coal lumps.
2. Secondary Crushers (e.g., Hammer Mill, Impact Crusher, Roll Crusher)
– Further crush coal into finer particles suitable for burning or industrial use.
3. Tertiary Crushers (e.g., Cone Crusher)
– Produce very fine coal powder specific applications like pulverized coal injection (PCI).

Working Principle:
– Coal is fed into the crusher, where rotating hammers, jaws, or rollers apply force to break it down.
– The crushed coal passes through screens to achieve uniform size before being discharged.

Applications:
– Coal preparation plants (washeries).
– Power plants (for pulverized coal combustion).
– Cement and steel industries (as fuel or raw material).

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