Rare earth molten salt electrolysis device based on anode adjustment and stable polar distance

Abstract

A rare earth molten salt electrolysis device based on anode adjustment and stable polar distance comprises an electrolysis furnace, anodes and cathodes are arranged in the electrolysis furnace, the cathodes are connected to a negative electrode of a direct-current power source device, the anodes are symmetrically arranged around the cathodes, the upper portions of the anodes are connected with angle iron and connected to a positive electrode of the direct-current power source device, and a molten rare earth receiver is arranged under the cathodes. The projection of the cathode at the bottom of the electrolytic furnace falls into the range of the receiver, and a feeding port is further formed in the top of the electrolytic furnace; and the electrode distance compensation mechanism is used for compensating the displacement change of the electrode distance according to the change value acquired by the pressure sensor and maintaining the stability of the electrode distance between the anode and the cathode. The polar distance compensation mechanism is arranged, so that the polar distance can be automatically and dynamically compensated according to the consumption of the anode in the rare earth molten salt electrolysis process, the stability of the polar distance between the anode and the cathode is maintained, and the anode can also be swung to facilitate electrolyte stirring and escape of gas generated by electrolytic reaction; and the anode can be lifted and pulled out for replacement.

Description

technical field [0001] The invention relates to the field of rare-earth electrolysis, in particular to a rare-earth molten salt electrolysis device with stable pole spacing based on anode adjustment. Background technique [0002] Rare earth elements are the general term for 17 elements of lanthanide series, scandium and yttrium in group IIIB of the periodic table. They are commonly expressed as RE or REE. They have unique optical, electrical, magnetic and other properties, and are important raw materials in the field of contemporary high-tech. New functional materials, electronic materials, optical materials, special alloys and organometallic compounds made of rare earth elements are widely used in electronic information, new energy, new materials, energy saving and environmental protection, aerospace and other high-tech fields. China is rich in rare earth mineral resources, which provides better resource conditions for the development of the rare earth industry. [0003] I...

AI Technical Summary

Problems solved by technology

At the same time, similar to the scheme of placing the cathode above or below the cathode, it also faces the change of the pole distance caused by the thinning of the graphite anode, which comprehensively leads to the dynamic and unstable state of the pole distance between the liquid surface and the anode. The efficiency and quality of salt electrolysis cannot be stabilized at the preset target

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