Process of zinc electrodeposition by use of porous lead-based alloy anode

The invention discloses a process of zinc electrodeposition by use of a porous lead-based alloy anode. The porous lead-based alloy is taken as the anode, a rolled aluminum plate is taken as the cathode and a leachate containing manganese and zinc is taken as the electrolyte to perform electrolytic zinc electrodeposition; the manganese ion concentration in the electrolyte is controlled to be lower than 0.5g/L in the electrolytic deposition process. According to the process, the content of manganese ions in the electrolyte is strictly controlled so that a protective layer can be formed on the surface of the porous lead-based alloy and no much manganese dioxide can be generated to block the pores of the porous lead-based alloy anode; the advantages of high surface area and low current density of the porous lead-based alloy anode can be kept; besides, the process is capable of reducing the consumption of pyrolusite and reducing the frequency of clearing anode mud, and suitable for industrial application.