Process for milling grist and other materials to be milled

摘要

In the milling of wheat and other delicate materials to be milled, an improvement of the quality of the finished product is achieved by increasing and decreasing rapidly and alternately the milling space formed between at least two rollers of a roller type mill, said space being adjusted to a minimum value, by means of periodic oscillations of one of the rollers with respect to the other. A highly pronounced differentiation can be achieved, in other words an improvement of the quality of the finished product, if at least one grinding body (3), forming with another grinding body (2) a grinding space, has a convex or cylindrical cross-sectional profile, whereas the other grinding body (2) has, preferably, a concave section and does not rotate about its proper axis. The surface of the concave grinding body, of which the radius of curvature is generally bigger than the sum of the radius of curvature of the co-operating grinding body plus the minimum grinding space, can be structured in a different way by sections in the feed direction of the material to be ground. Adjustments (101) of one of the grinding bodies (2) with respect to the other (3) allow to adapt the grinding, to a large extent, to the material to be ground. IMAGE