Flotation machine and method for improving flotation effect

Details Flotation machine and method for improving flotation effect Flotation machine and method for improving flotation effect

B - Operations, Transporting

03

D

B03D 1/14 (2006.01) B01F 3/04 (2006.01) B01F 15/02 (2006.01) B03B 13/00 (2006.01) B03D 1/16 (2006.01)

Patent

CA 2393777

The invention relates to a flotation machine and method for improving flotation effect in the flotation machine which is provided with members for feeding material (11, 51) to be treated in the flotation machine, members for removing the treated material out of the flotation machine at least in the upper part (12, 52) of the flotation machine and in the bottom part (17, 57) of the flotation machine, a mixing mechanism (16, 46) comprising a stator (8, 48) and a rotor (7, 47) located inside the machine, air supply means (9,49) for supplying air to the mixing mechanism and forming a froth bed (14, 45) in the upper part of the flotation machine, at least one member (13, 53) for adjusting free space of the froth bed created in the flotation machine. According to the invention a conducting member (15, 21, 55) is installed inside the flotation machine in order to add flowing material for slurry dilution in the slurry area essentially above the top part of the rotor (7, 47), but below the froth zone (14, 54).

L'invention concerne une machine de flottation et un procédé destiné à améliorer l'effet de flottation dans cette machine de flottation, qui comporte des éléments permettant d'acheminer une matière (11, 51) à traiter dans cette machine de flottation, des éléments destinés à enlever la matière traitée de la machine de flottation au moins dans la partie supérieure (12, 52) et dans la partie inférieure (17, 57) de cette machine de flottation, un mécanisme de mélange (16, 46) comprenant un stator (8, 48) et un rotor (7, 47) situés à l'intérieur de cette machine, un organe d'alimentation en air (9, 49) destiné à acheminer de l'air vers ce mécanisme de mélange et à former un lit d'écume (14, 54) dans la partie supérieure de la machine de flottation, et au moins un élément (13, 53) servant à adapter l'espace libre du lit d'écume formé dans ladite machine de flottation. Selon l'invention, un élément conducteur (15, 21, 55) est monté dans la machine de flottation afin d'y ajouter de la matière en écoulement en vue d'une dilution de suspension dans la zone de suspension située essentiellement au-dessus de la partie supérieure du rotor (7, 47) mais en dessous de la zone d'écume (14, 54).

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