The titanium anode used for etching solution copper recovery plays an important role in the production of printed circuit boards (PCBs). As the etching process progresses, the concentration of copper ions in the etching solution gradually increases. When it reaches 150g/L, the etching solution will lose its activity. Therefore, the waste etching solution contains a large amount of copper, which can be recycled and reused. The recycling process usually includes the following steps: waste etching solution - copper extraction - H2SO4 back extraction - electrolytic recovery of copper.

Titanium anodes have the following advantages in etching solution copper recovery:

1. High current density and high electrolysis efficiency.

2. Low groove pressure, good energy-saving effect.

3. Corrosion resistance and long lifespan.

4. No pollution, the substrate can be reused.

5. The electrode plate is lightweight and easy to operate.

Types and characteristics of titanium anodes

Titanium anodes are usually made of industrial pure titanium TA1 or TA2, which have good conductivity, corrosion resistance, and mechanical strength. According to the different surface catalytic coatings, titanium anodes can have oxygen evolution or chlorine evolution functions. In addition, titanium anodes can be customized according to user needs, such as size and coating material selection.