Micro Etching Liquid Recycling And Copper Extraction Equipment

Micro-etching is the circuit board production process of grinding board, electroplating, coppering, nickel gold immersion, oxidation (OSP) and tin spraying and other processes, the purpose is to roughen the copper surface, increase the bonding force with the plating layer. Treatment process with sodium persulfate / sulfuric acid, ammonium persulfate / sulfuric acid or hydrogen peroxide / sulfuric acid and other systems, sodium persulfate, ammonium persulfate and hydrogen peroxide play a role in increasing the oxidation value of the micro etching solution to improve the oxidizing ability of the potion, to achieve the effect of rapid etching of copper. However, when the copper ion concentration in the micro-etching solution reaches a certain value (15g/L), the etching ability is significantly weakened, the need to change the tank or regeneration, and the waste liquid needs to be discharged or regenerated for reuse.

Micro-etching fluid recovery and copper extraction equipment is for micro-etching systems on the copper surface processing of the waste liquid generated by the electrolytic treatment equipment. Adopt electrolysis to break the oxidizer – electrodeposition copper process to deal with micro-etching waste liquid. The treated waste liquid is sulfuric acid waste liquid with copper ion concentration less than 0.5g/L containing 5%, which achieves the purpose of recovering copper and reuse of medicinal water, and greatly reduces the pressure of environmental protection treatment.

The micro etching waster liquid copper recycling equipment has the advantages of equipment occupies a small area, small investment, simple and easy to operate. The electric efficiency is 70%, with no other auxiliary additives, and low cost.