The direct recovery of metal copper by electrolysis is a relatively classic method, but it is difficult to recover by electrolysis from dilute solution. A small pole distance forced circulation electrolysis device can directly recover copper in the acidic copper plating recovery tank, which can achieve satisfactory results. After the plated parts come out of the plating tank, they are first dipped in the recovery tank. As the production progresses, the copper content in the recovery tank gradually increases, so the copper ions brought from the recovery tank to the rinse tank also increase. An electrolytic tank is set up next to it, and the leaching solution in the recovery tank is continuously circulated through the electrolytic tank to carry out electrolytic recovery of copper. Not only can metal copper be directly recovered by electrolysis, but also the concentration of copper ions in the recovery tank can be maintained at a low level of 0.4g/L, which greatly saves the amount of rinsing water. With this process, the recovery rate of copper is 90% ~ 95% of the amount taken out of the plated parts, the purity of copper can reach more than 95%, the current efficiency is 65%, and the total power consumption of recycling 1kg of copper is less than 15kW-h, and the power consumption is far It is lower than the value of recycled copper and has obvious economic benefits.
To prevent the concentration of copper ions in the copper plating solution from increasing: the electroplated copper layer on the surface of steel products is a cathodic coating, which has no electrochemical protection effect on the substrate, and is generally not used as a protective decorative coating. It is usually mainly used for multi-layer Undercoating or middle plating of plating, such as electroplating copper/nickel/chrome, or electroplating nickel/copper/nickel/chromium, etc.; in addition, it is also used to restore the size of parts, prevent local carburization, printed circuit and electroforming
In addition, it is also widely used as a pre-coating layer to improve the bonding strength of multi-layer decorative electroplating coatings for zinc die-casting parts, aluminum alloy die-casting parts, aluminum parts and aluminum-tin alloys. It can be seen that electroplating copper is a very important plating type. The commonly used processes for electroplating copper include alkaline cyanide copper plating, sulfate copper plating, pyrophosphate copper plating, citrate copper plating and HEDP copper plating. Due to the mismatch of the current efficiency of the cathode and anode during copper plating, the concentration of copper ions in the copper plating solution will increase, which will affect the quality of the plating layer. In order to keep the concentration of copper ions constant, the current general practice is to discharge the plating solution regularly, and then Adding electroplating additives, on the one hand, makes the discharged plating solution a waste and affects the environment, on the other hand, it affects the continuous production, and wastes useful resources such as hydrochloric acid, sulfuric acid, and organic additives; if an insoluble electroplating auxiliary titanium anode is used, it can completely solve the problem of copper The difficulty of increasing ions keeps the ion concentration of the plating solution constant, saving a lot of precious resources for the user, and at the same time, there is no need to stop the machine to discharge the plating solution, which can fully achieve the purpose of continuous production.
Baoji JM-TITANIUM—Professional anode design and manufacturer
Over the years, we have been specialized in anode research and development, production and manufacturing, and our products are exported to many countries around the world. Various series of anodes can be designed and produced according to the actual environmental parameters of different users. You are welcome to visit and negotiate.
Nicole
Company: Baoji Jimiyun Dynamic Co., Ltd
Cuntry:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 13369210920
Gmail:nicole@jmyunti.com
Website:www.jm-titanium.com
