ELECTROLYTIC FURNACE GROUP

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An electrolytic furnace group and an electrolysis method therefor, belonging to the technical fields of rare earth metallurgical electrolysis devices and the use thereof. The electrolytic furnace group comprises a common power source (12) and at least two electrolytic furnaces. Each electrolytic furnace comprises a cathode (8) and an anode (9), and the common power source (12) is connected to the various electrolytic furnaces in the manner that a positive electrode of the common power source (12) is connected to the anode of the first electrolytic furnace, the anode of each electrolytic furnace thereafter is connected to the cathode of the previous electrolytic furnace, and the cathode of the last electrolytic furnace is connected to a negative electrode of the common power source (12). The circuit of the common power source (12), said circuit powering the various electrolytic furnaces, is a main circuit (41), and each electrolytic furnace also comprises an adjustment component (3) controlling the anode (9) to move. The present invention has advantages such as control being flexible, usage being convenient, energy utilisation being high, power consumption being low, and gas produced during electrolysis escaping easily. The product power unit consumption reduces as the number of electrolytic furnaces operating in the electrolytic furnace group increases.