Each type of mill had its particular advantages and disadvantages. Relatively little is known of their development before the Middle Ages, but certain of their characteristics suggest an order of appearance within the context of the complexity of construction and the possibilities for utilization.
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How about something really different? Recently I received from Sieg an evaluation sample of a new product: the U1 Vertical & Horizontal mill. Vertical mills, since the 1950's or so, have become much more common than horizontal mills, but it wasn't always that way.
Overview. Vertical roller mill has many different forms, but it works basically the same. All of these forms of machine come with a roller (or the equivalent of roller grinding parts), and roller along the track of the disc at the level of circular movement imposed by external grinding roller in the vertical pressure on the disc on the material ...