| 摘要 |
The present invention relates to a ring roller mill operating at a subcritical speed and comprising at least one grinding ring and at least one roller fitted inside the grinding ring. Such a mill can be used in connection with the manufacture of cement for grinding of mineral clinker materials, slags, and similar materials. The objective of the present invention is to provide a ring roller mill in which undesirable vibrations or skewrunning of the roller do not occur during operation and this is achieved by mounting internal fittings in the form of impact and distribution units in the mill. These units are placed in the path where the compacted material falls off the ring, descending towards the draw-in zone. During the grinding process the impact and distribution units will break down agglomerates, if any, while distributing the loosened material down over the draw-in zone in an even layer. The maximum degree of impact is attained when the material hits the unit at an angle between 60.degree. and 110.degree..
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