Self-rotation type electrolysis production device for producing rare earth metals element and alloy thereof

Abstract

The invention discloses a self-rotation type electrolysis production device for producing a rare earth metals element and an alloy thereof. A rotational tray is arranged on the bottom of an electrolytic tank body, the rotational tray is erected on a revolving platform through a rolling connection part, and an electric motor in the revolving platform is connected with a driving shaft which is connected with the lower surface of the rotational tray; a platform plate is erected on the revolving platform through platform plate supports which are arranged at the four corners respectively, four graphite anode plates which are distributed around the inner circle of the electrolytic tank body are arranged in the electrolytic tank body, and all the graphite anode plates and an anode conduction plate are fixed together. A rotating jackscrew mechanism is arranged on the anode conduction plate, and an anode is connected with a molybdenum rod through a connection arm, wherein the molybdenum rod isvertically inserted into the electrolytic tank body. According to the self-rotation type electrolysis production device, the revolving platform can drive the electrolytic tank body to rotate, the rotation of molten salt electrolyte is achieved, and better circulation flowing of the electrolyte and the dissolution and uniform distribution of a rare earth oxide are accelerated; the space between electrodes can be changed through the rotating jackscrew mechanism, a circulating water cooling structure is beneficial for reducing the temperature of the iron platform plate, and the resistance and thepower consumption are reduced.

Description

technical field [0001] The invention relates to electrolytic production equipment, in particular to a self-rotating electrolytic production equipment for producing rare earth metal elemental substances and their alloys, and belongs to the technical field of electrolysis. Background technique [0002] The production of rare earth metals is mainly carried out by molten salt electrolysis. The electrolysis system adopts fluoride molten salt electrolysis system, and the equipment used is a medium-sized electrolytic cell of 3000-8000 amps and a large-scale electrolytic cell of more than 10,000 amps. [0003] The electrolytic cells used in the production of the above-mentioned rare earth metals are generally placed statically in the pits on the ground, and the platens are made of iron plates with a thickness of about 3 cm. During the electrolysis process, the current will flow through the iron platen to reach the graphite anode. At the same time, the temperature of the platen is hi...

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Problems solved by technology

Since the anode is fixed on the platen and does not move, during the electrolysis process, the anode will continue to be consumed, the distance between the electrodes will continue to increase, the cell voltage will increase, and the power consumption will gradually increase, reducing the service life of the cell body;

[0004] Secondly, the electrolytic cell is still and the circulation of the molten salt electrolyte is insufficient, resulting in uneven distribution of rare earth oxides dissolved in the electrolyte. The electrolysis process is very insufficient, and a part of the electrolyte participates in electrolysis, resulting in an increase in cell voltage and power consumption. At the same time, the oxide will also agglomerate at the bottom

[0005] Thirdly, the carbon powder produced by the graphite anode in the electrolytic cell is not easy to volatilize in the static state, which leads to the increase of the carbon powder in the molten salt electrolyte, which is easy to produce carbonized rare earth, increases the carbon content in the metal, reduces the product quality, and is easy to Produce slag, reduce the utilization rate of raw materials, and increase production costs

[0006] In order to solve the above problems, it is usually necessary to manually move the graphite anode at the risk of high temperature burns, and stir the high temperature electrolyte to improve the flow of the molten salt electrolyte and promote the uniform distribution of the material (rare earth oxide) in the electrolyte, but such an operation is very difficult , high labor intensity, and great potential safety hazards

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