The method for electrolytically extracting metal is to use an insoluble anode to reduce the metal ions to be extracted in the leached and purified electrolyte solution at the cathode to obtain a pure metal. The electrolytic cell generally adopts a diaphragmless electrolytic cell, and the selection of the insoluble anode is selected according to the electrolyte and the electrolysis conditions. It requires good stability, good corrosion resistance and long-term use. In the process of electrolysis, good electrocatalytic activity is required to reduce the cell pressure and overpotential.
Titanium anodes for electrolytically extracting metals by anodic electrolysis for metal recovery have the following specifications:
1. Substrate: Gr1 pure titanium
2. Coating system: Ir-Ta mixed metal oxide coating, platinum-ruthenium mixed metal oxide coating, platinized layer, etc.;
3. Anode shape: there are flakes, plates, meshes, rods, etc.;
4, anode size: can be selected according to the size of the cell, the size can reach 2.5m x 1.2m.
5, current density: 600-1500A/m2;
6. Application fields: Electrolytic extraction and recovery of non-ferrous metals, electrodeposition to produce copper-nickel-cobalt, etc., electrolysis of high-purity metals, recovery of metals from electroplating waste liquids, etc.