A copper electrolysis system and method capable of adjusting the ratio of copper to acid

Abstract

The invention belongs to the technical field of chemical industry and relates to a copper electrolysis system and method capable of adjusting the ratio of cupric acid. The present invention achieves the purpose of controlling the ratio of cupric acid through the common application or conversion of the horizontal orientation magnetic field and the vertical orientation magnetic field, so that the value fluctuates within the normal range; the present invention can strengthen the mass transfer through the magnetic field, greatly reducing the polarization To a certain extent, its current efficiency can be greatly improved, and power consumption will be reduced accordingly; strengthened Cu 2+ The diffusion of impurity ions promotes the main reaction, reduces the side reaction, and reduces the concentration of impurity ions to varying degrees; promotes the reaction of impurity ion sedimentation, reduces the main elements that form floating anode slime, such as As, Sb, Bi, etc., thereby reducing the concentration of floating anode slime amount, reduce the probability of occurrence of cathode copper long particles; increase Ca 2+ Solubility can solve the problem of pipe blockage caused by fouling; accelerate the dissolution of the anode, accelerate the formation rate of cathode copper, and shorten the electrolysis cycle.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to a copper electrolysis system and method capable of adjusting the ratio of copper acid. Background technique [0002] Electrolytic refining is an important step in the processing and production of copper smelting enterprises, and it is also the basic procedure for the production and manufacture of cathode copper. The copper electrolytic refining process has been widely used in actual production; However, in recent years, various problems have appeared in the cathode copper produced by major smelters across the country. It affects the quality of cathode copper, but more importantly, the surface quality of cathode copper is a systematic problem, and there are many influencing factors, especially the ratio of copper acid, [Peng Chufeng, He Aiping, Li Jian, Liu Aiqin. The effect of electrolyte on the surface of cathode copper The influence of quality [J]. Non-ferrous metal des...

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Problems solved by technology

[0002] Electrolytic refining is an important step in the processing and production of copper smelting enterprises, and it is also the basic procedure for the production and manufacture of cathode copper. The copper electrolytic refining process has been widely used in actual production; However, in recent years, various problems have appeared in the cathode copper produced by major smelters across the country. It affects the quality of cathode copper, but more importantly, the surface quality of cathode copper is a systematic problem, and there are many influencing factors, especially the ratio of copper acid, [Peng Chufeng, He Aiping, Li Jian, Liu Aiqin. The effect of electrolyte on the surface of cathode copper The influence of quality [J]. Non-ferrous metal design, 2002 (03): 8-11.] It is found that the passivation phenomenon that occurs when the anode contains high nickel will hinder Cu 2+ Diffusion of copper acid causes an imbalance in the proportion of copper acid, resulting in concentration polarization and affecting the chemical quality of cathode copper

At the same time, the literature [Cao Kangxue, Zheng Jizu, Zhu Fuliang. The influence of copper ion concentration on the surface quality of cathode copper [J]. Gansu Metallurgy, 2011, 33 (03): 24-26.] found that once the copper content in the electrolyte is too low, It will also promote the precipitation of loose copper on the cathode, and the surface is easy to grow particles. In severe cases, it may even become powdery and have the risk of precipitation of impurities, such as arsenic, antimony, bismuth, etc. Therefore, increasing the copper content of the electrolyte within a certain range can make the cathode The deposit is dense, but after exceeding a certain range, the concentration of copper ions continues to increase. On the one hand, due to the increase in the density and viscosity of the electrolyte, the chances of long particles in the cathode increase; in addition, because copper is one of the more difficult smelting metals, this To a certain extent, the development of copper electrolysis technology is limited, so the process has been facing problems such as high pollution, high energy consumption, low efficiency and unstable cathode copper quality. There is a technical limitation that the existing process only solves a single problem.

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