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A method for improving the purification efficiency of copper electrolyte

A technology of purification efficiency and copper electrolyte, which is applied in the field of electrolytic copper, can solve the problems of ketone-acid imbalance, easy precipitation of arsine, and generation of a large amount of black copper powder, so as to maintain the balance of keto-acid, speed up the reaction rate, and reduce acid The effect of fog formation

Active Publication Date: 2020-05-22
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the purification efficiency of copper electrolyte, so as to solve the problems that the existing electrowinning liquid purification technology is easy to precipitate arsine, generate a large amount of black copper powder, and unbalanced keto-acid

Method used

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  • A method for improving the purification efficiency of copper electrolyte

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The ion concentrations of Cu, As, Sb and Bi in the original electrolyte were 40 g / L, 0.10 g / L, 0.9 g / L and 0.5 g / L in sequence.

[0026] Step 1. Apply a magnetic field to the pipeline 10 of the electrolysis circulation system of the continuous electrolysis series stepped electrolytic cell, set the magnetic induction intensity of the magnetic field to 1T, turn on the circulation pump 5, and adjust and set the electrolyte through the flow meter 3 and the control valve 4 The flow rate is 0.2m / s, and the electrolyte is fully magnetized for 30 minutes;

[0027] Step 2: Turn on the power supply of the stepped electrolytic cell 1, set the temperature of the heating device 11 to 45°C, the current to 10000~12000A, the pole distance to 130mm, the lead anode to 1050×940×12mm, and the starting plate to 1030×960× 0.75mm, the number of cathodes in each tank is 37 pieces, and the number of anodes is 38 pieces. Under this condition, electrowinning is carried out to remove copper and im...

Embodiment 2

[0030] The ion concentrations of Cu, As, Sb and Bi in the original electrolyte were 50 g / L, 0.15 g / L, 2.3 g / L and 1.7 g / L in sequence.

[0031] Step 1. Apply a magnetic field to the pipeline 10 of the electrolytic liquid circulation system of the continuous electrowinning series stepped electrolytic cell, set the magnetic induction intensity of the magnetic field to 2T, turn on the circulating pump 5, and adjust and set the electrolyte through the flow meter 3 and the control valve 4 The flow rate is 0.5m / s, and the electrolyte is fully magnetized for 50min;

[0032] Step 2. Turn on the power supply of the stepped electrolytic cell 1, set the temperature of the heating device 11 to 50°C, the current to 10000~12000A, the pole distance to 130mm, the lead anode to 1050×940×12mm, and the starting plate to 1030×960× 0.75mm, the number of cathodes per cell is 37, and the number of anodes is 38. Under this condition, electrowinning is performed to remove copper and impurities. During...

Embodiment 3

[0035] The ion concentrations of Cu, As, Sb and Bi in the original electrolyte were 30 g / L, 0.9 g / L, 1.5 g / L and 1.1 g / L in sequence.

[0036] Step 1. Apply a magnetic field to the pipeline 10 of the electrolytic liquid circulation system of the continuous electrowinning series of stepped electrolytic cells, set the magnetic induction intensity of the magnetic field to 2.5T, turn on the circulating pump 5, and adjust the electrolysis through the flow meter 3 and the control valve 4 The flow rate of the liquid is 0.8m / s, and the electrolyte is fully magnetized for 60 minutes;

[0037] Step 2: Turn on the power supply of the stepped electrolytic cell 1, set the temperature of the heating device 11 to 50°C, the current to 10000~12000A, the pole distance to 130mm, the lead anode to 1050×940×12mm, and the starting plate to 1030×960× 0.75mm, the number of cathodes per cell is 37, and the number of anodes is 38. Under this condition, electrowinning is performed to remove copper and i...

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Abstract

The invention discloses a method for improving purifying efficiency of copper electrolyte, and belongs to the field of electrolytic copper. The method for improving the purifying efficiency of the copper electrolyte aims at solving the problems that arsenic hydride is easily separated out in an existing electrodeposition liquid purifying technology, a large number of black copper powder is produced, and ketonic acid is not balanced. According to the technical scheme, the method is characterized in that a magnetic field of which the magnetic induction intensity is 1-2.5T is applied to a pipeline of a continuous electrodeposition series step type electrolytic cell electrodeposition liquid circulating system; a circulating pump is started; the flowing speed of the electrolyte is set, and theelectrolyte is fully magnetized; a power supply of a step type electrolytic cell is switched on; the temperature of a heating device is set, and then the electrodeposition is carried out to remove copper and impurities; a liquid inlet valve and a liquid outlet valve are adjusted based on the ion concentration of a stock solution in the electrodeposition process, and thus the concentration of Cu<2+> in a head tank is kept to be more than 20g / L. The method has the beneficial effects that the black copper powder is decreased; the separated-out arsenic hydride is reduced, and the acid mist is decreased; the ketonic acid is balanced; and the surface performances of cathode copper are improved.

Description

technical field [0001] The invention belongs to the field of electrolytic copper, and in particular relates to a method for improving the purification efficiency of copper electrolyte. Background technique [0002] With the progress of copper electrolytic refining, the impurity elements in the anode are continuously enriched in the electrolyte. When the impurities are enriched to a certain concentration, they may be deposited on the cathode together with copper, such as antimony and bismuth, which seriously affect the electrolytic copper. Quality; sometimes impurities will make the electrolyte dirty, such as arsenic, etc., which will reduce the amount of sulfuric acid and increase the resistance of the solution, resulting in the loss of electrical energy. Therefore, the electrolyte must be purified frequently or periodically to remove impurities accumulated in the electrolyte. [0003] Using the electrowinning liquid purification technology, there are very strict requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/12C25C7/06C25C7/00
CPCC25C1/12C25C7/00C25C7/06Y02P10/20
Inventor 姚夏妍余江鸿鲁兴武李彦龙程亮李俞良李守荣张恩玉李贵
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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