B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
B02C 15/06 (2006.01)
Patent
CA 2165414
The present invention relates to a ring roller mill which, among other things, can be used in connection with the manufacture of cement for grinding of mineralclinker materials, slags, and similar materials. The mill has a grinding ring (1) and a roller (2). Between the roller (2) and the grinding ring (1), the partially crushed material forms a grinding bed (4) and on each side of the grinding ring (1) dam rings (5) are fitted. On the outer side of the dam rings (5) are fitted collecting jackets (6), to which scoop plates (7) are fixed. The jacket collects the material which flows over the dam ring and by means of the scoop plates the material is lifted round with the collecting jacket. Since the speed of the jacket is lower than the critical speed, the material will drop off from the uppermost part of the jacket, being dispersed towards the bottom of the latter, and is subsequently returned to the grinding path. Effective internal conveyance is achieved with the mill according to the invention, hence eliminating the need for any external conveyance of overflow material.
Broyeur à cylindres annulaires pouvant notamment servir au broyage de clinker, de scories ou de matériaux similaires pour la fabrication de ciment. L'appareil comporte un cylindre broyeur (1) et un rouleau (2) entre lesquels le matériau partiellement écrasé forme un lit de broyage (4) et des cylindre(s) de retenue situés de chaque côté du cylindre broyeur (1) à l'extérieur desquels se trouvent des chemises de collecte auxquelles sont fixés des godets (7). Les chemises recueillent le matériau qui passe par dessus le cylindre de retenue et se trouve élevé par les godets. Comme la vitesse des chemises est inférieure à la vitesse critique, le matériau retombe de la partie supérieure des chemises et se disperse en arrivant au fond avant de rejoindre le chemin de broyage. Ce broyeur assure un transport intérieur efficace des matériaux sans avoir recours à des moyens extérieurs de transport.
Borden Ladner Gervais Llp
F.l. Smidth & Co. A/s
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