Buhler Ag

Urs Dübendorfer

Arturo Bohm

Kurt Grauer

Martin Heine

Dario Pierri

A material bed roller mill for comminution of grain in a material bed. The material bed roller mill comprises rollers, at least one feed opening, a draw-in region between the rollers, a grinding gap between the rollers and at least one delivery opening. The material bed roller is configured, during operation, to produce a material bed in the draw-in region and to draw grain from a surplus thereof by a filled material duct or hopper. A specific grinding force of the material bed roller mill can be set in such a way that grain is heated, during the grinding operation, by less than 30&#xb0; C., preferably by less than 15&#xb0; C., to the temperature of the grain before the respective grinding.

Apparatus and method for producing flour and/or semolina

A grinding arrangement for producing flour from cereal grain has at least one grinding mechanism designed as a stock-bed roller mill. The grinding mechanism has at least one feed opening and at least one dispensing opening. The grinding arrangement has at least one separating stage for separating ground products into finer ground product and coarser ground product, and returns at least some of the coarser ground product into the feed opening of the grinding mechanism.

Method for producing flour and/or semolina

A stream of ground particles is characterized by irradiating it with electromagnetic radiation and detecting electromagnetic radiation emitted from the irradiated particles. The detecting system includes an imaging system and a color image sensor for imaging the particles by way of the electromagnetic radiation emitted by the particles. The color image sensor has sensor image elements for spectrally selective detection of the electromagnetic radiation.

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Niederuzwil, Switzerland

Urs Dübendorfer