# Disc mill

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A '''disc mill''' is a type of [crusher](/source/crusher) that can be used to grind, cut, shear, shred, [fiberize](/source/fiberize), pulverize, granulate, crack, rub, curl, fluff, twist, hull, blend, or refine.  It works in a similar manner to the ancient [Buhrstone mill](/source/grinder_(milling)) in that the feedstock is fed between opposing discs or plates. The discs may be grooved, serrated, or spiked.

== Applications ==

Typical applications for a single-disc mill are all three stages of the wet milling of field [corn](/source/maize), manufacture of [peanut butter](/source/peanut_butter), processing [nut shells](/source/nut_shells), [ammonium nitrate](/source/ammonium_nitrate), [urea](/source/urea), producing chemical slurries and recycled paper slurries, and grinding [chromium](/source/chromium) metal.

Double-disc mills are typically used for alloy powders, [aluminum](/source/aluminum) chips, [bark](/source/Bark_(botany)), barley, [borax](/source/borax), brake lining scrap, [brass](/source/brass) chips, [sodium hydroxide](/source/sodium_hydroxide), chemical salts, [coconut](/source/coconut) shells, [copper](/source/copper) powder, [cork](/source/cork_(material)), [cottonseed](/source/cottonseed) hulls, pharmaceuticals, [feathers](/source/feathers), [hops](/source/hops), [leather](/source/leather), [oilseed cakes](/source/oilseed_cakes), [phosphates](/source/phosphates), rice, [rosin](/source/rosin), [sawdust](/source/sawdust), and [seeds](/source/seeds).

Disc mills are relatively expensive to run and maintain and they consume much more power than other shredding machines, and are not used where [ball mill](/source/ball_mill)s or [hammermill](/source/hammermill)s produce the desired results at a lower cost.

== Mechanism ==
Substances are crushed between the edge of a thick, spinning disk and something else. Some mills cover the edge of the disk in blades to chop up incoming matter rather than crush it.

== References ==
{{Reflist|30em}}

Category:Industrial equipment
Category:Grinding mills

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Adapted from the Wikipedia article [Disc mill](https://en.wikipedia.org/wiki/Disc_mill) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Disc_mill?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.