SU882598A2 - Sorption apparatus - Google Patents

Description

  1 The invention relates to hydrometallurgy of non-ferrous metals, in particular to ycTpoficTBciM for sorption extraction of useful components from slurries and solutions. According to the main auth. 401388 a sorption apparatus is known, comprising a cylindrical body with a conical bottom, a spiker, an air-lift tube located along the apparatus axis for mixing the pulp with resin, air-lift tubes for feeding suspension, a drainage device with inclined filter nets, receiving chambers with lids and installed under filtering nets pallets located on the outer side of the receiving chambers, with this drainage device located on the cover of the apparatus and made in the form of sections with us sets of filtering grids, the end of t K for stirring the resin slurry located below the conical bottom en- tire ri3. During the operation of the sorption apparatus, to ensure transportation of the sorbent from the grids into the working chamber, circulation flows of pulp slurry are provided, which are 1-3 times higher than the throughput capacity of the drainage device. As a result, part of the pulp resin suspension, which is not divided into drainage, through the leakages around the perimeter of the first cassette is connected to the tray and connected to the tray on which they are installed. the cassette penetrates into the pallet to collect the pulp, which is separated on the beta from the sorbent, which causes a significant overshoot of resin from the precursor sorption stages to the next, where it is mixed with a less saturated sorbent. During this sorption, the equilibrium concentrations of useful components in the liquid phase of the subsequent stages of sorption increase. The indication leads to a decrease in the extraction of useful components due to an increase in their concentration in the spent pulp and to a decrease in the productivity of the sorption section due to the downtime / need to bring the sorption cycle to a working state. The purpose of the invention is to increase the degree of extraction of useful components; by an orderly diversion of excess circulating flow. This goal is justified by the fact that the sorption apparatus containing

a cylindrical body with a conical bottom, a lid, air-lift pipes for mixing the pulp with resin and for supplying the suspension, a drainage device made in sections with filter cassette grids, receiving chambers with gates, and pallets installed under the filter grids are fitted with grooves installed between the cassettes of filter nets above the pallets and connected to the working chamber.

FIG. 1 shows the sorption apparatus, a general view; figure 2 - section aa in figure 1.

The sorption apparatus includes a working chamber 1, an air-lift pipe 2 for mixing pulp with sorbents l, an air-lift pipe 3 for feeding a pulp resin slurry into the receiving chamber 4, inclined cassettes of filter nets 5, a tray b for collecting pulp separated from the sorbent, flow-through. for discharge into the working chamber of an excess of the circulating stream of the pulp resin suspension.

In the working sorption apparatus, the original pulp and the sorbent are mixed in the working chamber 1 by compressed air supplied to the pipe 2. From the working chamber, the pulposmol on suspension is fed by airlifts 3 to the receiving chamber 4, from which, to separate the sorbent from the pulp (solution), the suspension goes through the distributor mouth | use of inclined filtering screen cassettes 5 .. Pulp,

After passing through the grids, it is collected in the pallet B and from it passes into the next apparatus along the pulp, into the sorbent the circulation pulp slurry is washed off from the mesh into the working chamber of the apparatus. The excess part of the circulating stream of pulp resinous suspension is poured into the flow-through gutters 7, isolated from the pallet B and connected to the working chamber i of the apparatus, and is returned to the working KciMepy of this same sorption stage.

The proposed design reduces the likelihood of slurry being slurried into the pan to collect the filtered pulp and penetration of the saturated sorbent to a subsequent stage of the sorption stage along the slurry and thereby enhances the extraction of useful components during the sorption redistribution.

Claims (1)

1. USSR author's certificate No. 401388, cl. B 01 J 1/06, 1972. j, l y  h l uiHutitjgJ | (Efgggggggu 11L vfitf / fffit 222I ZZQSsSI Uncetot J Vff / fA I FIG.