Method and arrangement for separating two solutions mixed in...

B - Operations – Transporting – 01 – D

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B01D 11/04 (2006.01) C22B 3/02 (2006.01)

Patent

CA 2751674

The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solu-tion phases in a liquid-liquid extraction separation cell (1). The arrangement includes a first guide wall (4), which is arranged at a distance from that end wall (15) of the cell (1) that is located on the side of the feed end (2), in order to extend along the whole width of the cell with respect to the vertical direction at an inclined angle (.alpha.). The first guide wall includes a bottom edge (5), which is located at a distance (H1...H2) from the cell bottom, so that in between the bottom edge (5) and the cell bottom (3), there is left a clearance gap (6) widening from the center towards the cell sides. The second guide wall (7) is essentially parallel with the first guide wall (4) and placed at a distance (L1) therefrom, so that in between the first guide wall (4) and the second guide wall (7), there is formed an uptake shaft (8) extending diagonally upwards at an inclined angle (.alpha.). The second guide wall (7) includes a bottom edge (13), which is pressed tightly against the cell bottom (3), a number vertical slots (9), which are arranged as a hori-zontal line (10) of vertical slots, said line extending along the width of the second guide wall at a distance from the bottom edge (13), and a slanting plate (11), which is attached to the second guide wall (7), in the vicinity of the top part of the line (10)of verti-cal slots.

L'invention concerne un procédé et un dispositif permettant de séparer deux solutions mélangées en dispersion dans deux phases en solution dans une cellule de séparation d'extraction liquide-liquide (1). Le dispositif comporte une première paroi de guidage (4), qui est disposée à distance de cette paroi d'extrémité (15) de la cellule (1) qui est située sur le côté de l'extrémité d'alimentation (2), afin de s'étendre le long de toute la largeur par rapport à la verticale selon un angle incliné (a). La première paroi de guidage comporte un bord inférieur (5), qui est situé à distance (H1...H2) du fond de la cellule, ainsi, entre le bord inférieur (5) et le fond de la cellule (3), il reste (6)un jeu fonctionnel s'élargissant du centre aux côtés de la cellule. La seconde paroi de guidage (7) est sensiblement parallèle à la première paroi de guidage (4) et placée à distance (L1) de celle-ci, de façon qu'entre la première paroi de guidage (4) et la seconde paroi de guidage (7), une cuve d'absorption (8)se forme, s'étendant en diagonale vers le haut suivant un angle incliné (a). La seconde paroi de guidage (7) comporte un bord inférieur (13) pressé étroitement contre le fond de la cellule (3), plusieurs fentes verticales (9) disposées comme ligne horizontale (10) de fentes verticales, ladite ligne s'étendant le long de la largeur de la seconde paroi de guidage à distance du bord inférieur (13), et un plateau oscillant (11) fixé à la seconde paroi de guidage (7), à proximité de la partie supérieure de la ligne (10) de fentes verticales.

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