This article is to introduce the wheat flour milling process. Before wheat can be milled into flour, it must be cleaned and conditioned to remove foreign material and poor quality or infested kernels first. Cleaning is done with an assortment of machines to separate kernel size, shape, density, dimension and friability under impact are all qualities that can be exploited to effect separation.
The wheat flour milling process used to produce flour in a modern roller mill is referred to as a gradual reduction. The endosperm is gradually reduced in particle size by running it between a series of pairs of rotating hardened steel rollers, either corrugated or smooth, and is separated from the bran and germ by running it over sieves. All pairs of rollers in a mill have one slow mill and one fast one. The rolls turn in opposite directions, toward each other, pulling the stock (material being ground) between them.
