Classification device, vertical pulverizing apparatus using...

B - Operations – Transporting – 07 – B

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B07B 7/083 (2006.01) B02C 15/04 (2006.01) B07B 7/08 (2006.01)

Patent

CA 2700505

[Problem] To provide a classification device in which product fine powder little in mixture ratio of coarse particles can be obtained. [Means for Resolution] A classification device characterized in that a setting pitch P between stationary fins 13 and a width L of each stationary fin 13 are combined so that a value of P/L is in a range between 0.042x(O-50)+0.64 and 0.019x(A- 50)+0.22 in 50 <_6<_70 when 0 is an inclination angle of each stationary fin 13, P is the setting pitch, and L is the width in a direction of circulation of particles. [Selected Drawing] Fig. 1

L'invention vise à proposer un dispositif de classification qui peut délivrer un produit de poudre fine dans lequel des particules grossières n'ont pas été incluses de façon significative. À cet effet, l'invention porte sur un dispositif de classification caractérisé par le fait qu'il comprend une combinaison d'un pas d'installation P et d'une largeur L dans une ailette fixe (13) satisfaisant à la formule suivante : P/L = 0,042 OE(? - 50) + 0,64 à 0,019 OE(? - 50) + 0,22 à 50° = ? =70°, ? représentant l'angle d'inclinaison de l'ailette fixe (13) ; P représentant le pas d'installation de l'ailette fixe (13) ; et L représentant la largeur d'une direction d'écoulement de particule.

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