An insoluble anode is used for the electrolytic extraction of metals. The metal ions to be extracted from the leached and purified electrolyte are reduced at the cathode to produce pure metals. The most difficult problem of metal extraction by electrolysis is the selection of suitable anode materials. The anode is required to be stable, corrosion-resistant, and can be used for a long time. The anode process has good electrocatalytic activity, so as to reduce the overpotential of the anode reaction and the tank voltage. Electrolytic metal extraction requires the use of anode stability, corrosion resistance, anode process has a good electrocatalytic activity, in order to reduce the anode reaction overvoltage and tank voltage. In recent years, coated titanium electrodes have been widely used in the field of electrolytic metal extraction. Through a large number of studies and tests, it has been shown that the coated titanium anode produced by our company can be used to extract metals from various electrolytes by electrolysis, which can not only obtain high purity products, but also have a long service life and good electrocatalytic activity.