Acid etching solution for copper recovery
The acid etching solution circulation regeneration system uses the ion membrane electrolysis process to regenerate the etching solution and recover copper. This process is an online regeneration process, that is, the electrolysis regeneration equipment is connected in series with the etching machine, and the regeneration reaction and etching reaction are mutually reversible. The reactions are cycled in sequence.
Technical advantages
(1) Using the special noble metal coating of the anode plate to catalyze the formation of electrochemical potential potential difference to oxidize copper ions into divalent copper ions, the etching solution can be recycled after regeneration, the regeneration potion has good stability, and the etching factor is qualified, and can be reused Afterwards, it can save 70-90% of oxidant and 50-70% of hydrochloric acid.
(2) The recovered copper is high-quality and high-purity electrolytic copper plate. A set of equipment with a monthly processing capacity of 30 tons can produce more than 100 kilograms of electrolytic copper powder per day, and the copper recovery rate is 100%, with significant economic benefits.
(3) The anode frame of the equipment adopts high-efficiency ion exchange membrane, which has large membrane flux, low resistance, high electrolysis efficiency and low cost.
(4) The equipment has advanced technology, stable performance, simple operation and maintenance, high degree of automation, safety and convenience. After being connected with the etching line, it will automatically circulate and operate, and it will not affect the production during the installation and debugging process. After installation and debugging, it can be put into use. Compared with similar equipment, it occupies a small area, has low labor intensity and low operating cost.
(5) During the operation of the system, the entire etching liquid system is closed, and a small amount of acidic waste gas generated by electrolysis is discharged from the waste gas pipeline to the waste gas tower. It can be discharged to the national standard by spraying with 5% alkali solution, and the workshop is odorless. It greatly reduces the emission of pollutants and realizes cleaner production.
