Grist mill

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Grist mill from 1840

Grist mill for beechnuts

A grist mill is used to grind grains into grist . It is used in breweries to crush malt into grist.

A distinction is made between types of grist mills:

1. according to the number of rollers that are used in the grist mill. There are types with 2 rollers, 4 rollers, 5 rollers or 6 rollers.
2. after grist mills with or without sieving.
3. after moistening the malt in wet and dry grist mills.

The grains flow into the mill from a malt hull. A feed roller meters and regulates the admission of the mill. The rollers are almost always arranged in pairs and rotate with a differential speed (advance) against each other. This pulls the grain into the grinding gap and grinds it between the rollers. In mills with grist sifting, a sieving process takes place between the grinding cycles over inclined sieves. The individual fractions are separated according to particle size and the coarse grist components are further ground. When grinding barley malt, the husks can be sieved and collected separately.

Hammer mills are used to produce powder grist for brewing systems with mash filters.

Individual evidence

1. ↑ Wolfgang Kunze, Technologie Brauer und Mälzer, 8th edition, Berlin, 1998, ISBN 3-921690-37-4 , pp. 191-204