Crusher
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Overview
Crushers replace hand tools and muscle with a machine to break things into smaller things.
Crushers are commonly used in mineral processing and recycling workflows to fracture or compress some given size range of objects down into a smaller range.
The common type in basic mining operations is a jaw crusher, which uses a V shaped funnel with one edge stationary and the other repeatedly moving back and forth.
Crushers differ from mills, in that they are meant as a 'first stage' for larger, harder, and more heterogeneous materials.
Development
- Design considerations - https://www.motioncontroltips.com/helical-gears-what-are-they-and-where-are-they-used/
- Cordless rock crusher - https://www.youtube.com/watch?time_continue=44&v=Ex8A7HNgAqY
Production Rates
- See specs at https://loevensteyn.co.za/products/pew-jaw-crusher.html
- Production rate of 1 ton per kWhr - not bad.
- A Nema 17 motor at 10W of power can crush 250 kg of rock per day if geared down sufficiently enough
