Method to produce high-grade copper

FIELD: metallurgy.

SUBSTANCE: method involves electrolytic refining with dissolution of anode and transition of copper ions to the cathode. At that the electrolytic refining is accelerated by setting between the anode and the cathode of the lattice with negative potential, whose elements have protective insulation from the electrolyte.

EFFECT: reduced time of electrolytic refining, and reduction of specific electricity consumption.

2 cl, 1 dwg

 

The invention relates to the metallurgical industry, in particular obtaining a high-quality copper.

A method of obtaining high-quality copper-based electrolytic refining of anode plates [1].

The electrolysis is carried out in the electrolyte (solution of copper sulfate - CuS4and sulphuric acid.

Electrolytic copper has a purity of about 99,9599,99%.

Significant disadvantages of the existing methods of obtaining high-quality copper are:

- long duration of the dissolution of the anodes (2030 days);

- high specific energy consumption (per 1 ton of copper cathode is 200400 kWh).

The aim of the invention is to develop a method of obtaining high-quality copper, which would not have the above disadvantages.

This goal is achieved in the following ways.

Large energy losses during the passage of current in the electrolyte coupled with its significant ohmic resistance and the slow dissolution of the anode. The ohmic resistance of the electrolyte is proportional to the distance between the anode and cathode. To reduce this distance is proposed installation between metal grilles (louvers), elements of which have protective insulation from the electrolyte. The grille is supplied in parallel to the cathode voltage.

Magnet the second field, which is created by lattice increases the speed of movement of the metal ions, thereby accelerating the process of electrolysis. Because the elements of the lattice is isolated from the electrolyte, the loss of metal ions on them is excluded.

For more rapid dissolution of the anode on its front surface (top, bottom, left, right) served ultrasound. Ultrasonic vibrations generated by magnetostrictive transducers, weaken the link between ions, which contributes to more rapid dissolution of the anode.

1 shows a diagram of the proposed method of obtaining high quality copper containing tub 1, the electrolyte 2, anode 3, cathode 4, the bars 5, are covered with a protective insulation 6, the ultrasonic head 7.

The process of obtaining high-quality copper occurs as follows: when voltage is applied to the anode and the cathode is the electrode dissolves and transfer of copper ions on the cathode. To speed up the process of electrolysis between the anode 3 and the cathode 4 is set to grid 5, the elements which have a protective insulation 6. On the grill served the same voltage as the cathode. As the distance between the positive anode and a negative potential of the grid is small, the speed of movement of copper ions to the cathode increases, which reduces the time of electrolysis.

To increase the dissolution rate of the anode to its end is overhasty is applied ultrasound.

The proposed method of producing high-quality copper increases the output current and reduces the energy consumption.

LITERATURE

1. Knorozov BV Technology of metals. / Bvert [and others]. - M.: metallurgy, 1978. - S.

1. The method of obtaining high-quality copper, including electrolytic refining with the dissolution of the anode and the transition of copper ions on the cathode, characterized in that the electrolytic refining accelerate by installing between the anode and cathode lattice with a negative potential, the elements of which have protective insulation from the electrolyte.

2. The method according to claim 1, characterized in that to increase the dissolution rate of the anode at its end surface serves ultrasonic vibrations.



 

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2 tbl

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