Energy-saving system and technique for recovering aluminum ions and sulfuric acid in oxidation tank and shortening oxidation electrode distance

The invention discloses an energy-saving system and technique for recovering aluminum ions and sulfuric acid in an oxidation tank and shortening the oxidation electrode distance. By means of the system and the technique, the problems that during the existing oxidation process of aluminum alloy, the oxidation temperature of the oxidation interface is high, the dissolved quantity of an oxidation film is large, and oxidation energy consumption is high are solved. An energy-saving device for shortening the oxidation electrode distance comprises the oxidation tank, a refrigerator, a titanium exchanger, a first pump, an overflow tank and a pipeline, and further comprises a mobile oxidation polar plate device. The mobile oxidation polar plate device comprises a plurality of drive motors, a mobile positioning device, a mobile cathode cooling pipe, an anode conductive base and a negative pole conductive device. A master energy-saving oxidation basin/tank aluminum ion and sulfuric acid recovery system with the energy-s