Patent ID: 9067213
Filing Date: 2015-06-30
Classification: B02C,B07B

Abstract:
1. A method for producing flour from grain, comprising steps of: feeding the grain as a material bed into a material bed roller mill wherein 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; producing a material bed in the draw-in region and drawing grain from a surplus thereof by means of a filled material duct or hopper, grinding the grain in the material bed roller mill, by material bed comminution based on a packed particle fill in the grinding gap; conveying the ground grain into a first separating stage by means of a conveying arrangement; separating the ground grain in the first separating stage into finer ground product and coarser ground product; returning at least a fraction of the coarser ground product into the feed opening of the material bed roller mill by means of return arrangement; and discharging the finer ground product from first the separating stage.