SU1634309A1 - Airlift mixer - Google Patents

Abstract

The invention relates to hydrometallurgy and allows an increase in productivity during ion exchange processes. The mixer comprises a housing 1, an air dispersant 2 and a vertical partition 3. The partition divides the mixer volume into the mixing zone 4 and the separation zone 5. The mixture, for example, ionite and pulp or liquid, passes above and below the partition, forming the main circulation circuit. On inclined shelves 6. placed on horizontal continuous slots x 7, made in the partition, sludge part of the coarse-grained phase occurs. In the region of the shelves and slots, the mixture is turbulized to form additional circulation loops. Shelves can be placed on the same edges of the slots and protrude into the same zone or on the upper edges of the slots and protrude alternately into different zones. 2 hp f-ly, 2 ill. J

Description

1

The invention relates to hydrometallurgy, in particular, to devices for carrying out ion exchange processes from slurries and solutions, and can be used in a number of industries.

The aim of the invention is to increase productivity by increasing the efficiency of contacting the phases.

FIG. Figures 1 and 2 schematically depict the proposed airlift mixer with a different arrangement of shelves.

The air-lift mixer comprises a housing 1. an air dispersant 2 and a vertical circulator in the form of a partition 3, dividing the apparatus into a mixing zone 4 and a zone of space 5 with the possibility of passing the mixture above and below the partition. The vertical partition 3 in its middle part has one or several inclined shelves 6, which are placed on its transverse horizontal continuous pores 7. The shelves b project into the zone 5 (Fig. 1) or alternately into the mixing zone 4, as extreme low, then in the zone of sludge, as extreme upper (Fig. 2).

The device works as follows.

When the phases are mixed with dispersed air, the main circulation loop is established along the height of the apparatus. In the middle part of the apparatus, on the upper planes of the inclined shelves 6, there is a sludge part of the coarse granular phase, which flows into the zone with a lag from the main flow of the mixture. In the areas of zones. adjacent to the shelves and slots, part of the main circulation circuit is turbulized, and small circulation loops flow through the slots and across the shelves.

This is due to the air-lift effect created by the air gap.

Editor Y. Sereda

Compiled by L. Sweet Techred M. Morgental

mixing zones 4, as well as bubbles, which are output to zone 5 of the bed and returned to the mixing chamber due to the alternate protrusion of the shelves into different zones. This also causes additional dispersion of air bubbles.

Due to the additional circulation loops, turbulization of the main loop, partial delay of the ion exchanger on the inclined shelves and additional air dispersion, the efficiency of contacting the phases in the apparatus increases. This contributes to an increase in the number of contact stages carried out in it and to an increase in the extraction of valuable components.

Claims (3)

1. An airlift mixer, for example, an ion exchanger and a slurry or liquid, including a housing, an air dispersant and a vertical circulator, dividing the mixer volume into mixing and sludge zones, with the possibility of passing the mixture above and below the circulator, characterized in that In order to increase productivity by increasing the efficiency of contacting the phases, horizontal solid slots are made in the middle part of the circulator, and the circulator is provided with inclined shelves placed on the edges of the slots. 2. A mixer according to claim 1, characterized in that the inclined shelves are placed on similar edges of the slits and protrude into the same zone. 3. Mixer pop. 1, characterized in that the inclined shelves are placed on the upper edges of the slits and protrude into different zones. - Fig g Corrector A.Osaulenko