| 摘要 |
In a method for the mechanical regeneration of, for example, clay-bonded and chemically-bonded sand, after first drying and cooling (if and when this is necessary) the used sand is ground with the aid of a grinding organ (3), whereupon the ground away foreign matter is separated from the thereby regenerated sand. To this end, the device for the execution of the method contains, in addition to the grinding organ (3), sand displacement means placed in its proximity, which sand displacement means (4) can move preferably concentrically around the grinding organ (3), and which sand displacement means (4) keep the sand moving at a relatively slow pace in order to ensure a uniform contact between the sand which is used and/or intended for grinding. |
