B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
B02C 17/16 (2006.01) B02C 17/00 (2006.01)
Patent
CA 2076251
The invention relates to a method of operating a stirring ball mill which has a preferably cylindrical, rotating barrel provided with an inlet at one end and an outlet at the other end, in which a stirring shaft provided with stirring means rotates. This method includes operating the mill at supercritical rotatory speed with a degree of fill of at least 25%, while the balls are retained in the mill. In this manner a great throughput is achieved and a narrow grain size range, without requiring a great amount of space.
L'invention porte sur une méthode pour utiliser un broyeur à boulets comprenant un tambour rotatif de préférence cylindrique qui comporte une entrée à un bout et une sortie à l'autre bout, dans lequel tourne un arbre de mélange doté d'agitateurs. Cette méthode prévoit la rotation du broyeur à une vitesse surcritique avec un degré de remplissage d'au moins 25 %, les boulets étant retenus dans le broyeur. De cette manière, on obtient une grande capacité et une fourchette granulométrique étroite, sans qu'on n'ait besoin de beaucoup d'espace.
Barthelmess Ulrich
Schindler Ulrich
Fetherstonhaugh & Co.
Omya Gmbh
LandOfFree
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