SU841369A1 - Apparatus for extracting metals from solutions - Google Patents

Description

The apparatus consists of a horizontal rotating drum 1 made of a dielectric material and lined with copper 2. Inside the drum are located. longitudinal lerforated partitions 3, made of a dielectric or copper.

The apparatus is provided with an inlet 4 and a discharge outlet 5 for loading scrap, removing the formed ferrite, supplying and discharging the solution, as well as providing ventilation inside the drum. With continuous installation, the Apparatus has two zones, a zone of formation of ferrites 7 and 7, equipped with magnets 8. Zines are separated by a grid 9, which prevents the removal of scrap. The drum of the apparatus is mounted on the support rollers 10 and is rotated by means of the support and stop rollers 11.

The operation of the apparatus is carried out as follows.

The apparatus is loaded with copper and iron scrap. The original solution through the neck 4 enters the drum 1.

When the drum is rotated by creating a galvano-pair copper-iron, iron scrap is anodically dissolved. The rotation of the drum provides for the mixing of scrap, and the longitudinal partitions allow alternate contact of the scrap with air and solution, as a result of which the formation of ferrigs is intensified. The magnets at the discharge end of the drum prevent the dispersed ferrite from being quickly removed from the drum area and contribute to its enlargement.

The stock solution after removing the precipitated metal ions on the ferrites is removed through the discharge neck into the settling tank, from where the main part of the dispersed ferrites after hydrocyclononing returns to the apparatus inlet for reuse.

Coarse ferrite is a commercial product.,

A prototype of a 30-liter apparatus (7.5-liter working area) was tested under laboratory conditions for 72 hours during the purification of sulphite and cyanide solutions.

The first series of experiments.

Solutions.

The experiments were performed on a synthetic solution that simulates the wastewater composition, mg / l: Zn-2,92; 504-96.4; Ca-64.1; Pb1, 42; Fe-i, 65.

Experimental technique.

The experiments were performed under dynamic conditions in the flow with the apparatus productivity of 50, 100, 150 l / h.

The optimum performance of the device 300-350 beats. volumes per unit volume per day.

The experiments were performed in two modes at temperatures of 16-18 ° C and 35-40 ° C.

The processing time of the solution in the apparatus is 1 hour. The speed of rotation of the drum is 11 rb / min.

The results of the experiments are summarized in table. one.

The second series of experiments.

Solutions.

The experiments were performed on an industrial solution obtained by cyanidation of gold-silver ore from one of the deposits of Kazakhstan. The composition of the solution, mg / l; Zn-2.8, Au-3.6, Ad-13.6, CN75, 0, pH of the solution 11.36.

Experimental technique.

The experiments were performed under static conditions on 5 liters of solution at 18–20 C.

The solution is poured into the apparatus and within 3 hours the metals are deposited with the control of the liquid phase every 30 minutes.

The results of the experiments are summarized in table. 2

Thus, the main advantage of the proposed apparatus is as follows;

a new, cheap metal precipitator is used from solutions obtained directly in the apparatus;

the process is greatly simplified.

The device can be introduced at a number of concentrating factories in Kazakhstan that process ores containing precious metals.

The expected economic effect of 300 thousand rubles a year.

The deposition of metal ions from solutions according to the claimed method

Table 1

The deposition of metals from cyanide solutions according to the claimed method

Table 2

Claims (1)

(54X57) APPARATUS FOR EXTRACTING METALS FROM SOLUTIONS, containing ba; raban, shelves located on the inner surface of the drum, grid, drive, loading and unloading devices, which means, in order to increase the efficiency of extraction of precious metals through the formation of precipitates of precious metals in the form of coarse ferrites, the apparatus is equipped with magnets, the net divides the drum into two zones: the zone of formation and the zone of enlargement of ferrites, the magnets are located in the zone of enlargement of ferrites, and the inner surface of the drum is lined with copper. This