Large-size cathode rare earth molten salt electrolytic bath

Abstract

The invention relates to a large-size cathode rare earth molten salt electrolytic bath which comprises an anode current-conducting plate, an anode clamp, an anode, a cathode, a receiver, a bath body lining, a bath body leakage-proof layer, an inner protection layer, a heat preservation layer and an outer protection layer, wherein the electrolytic bath is an open single cathode and is cooled at the upper part of the electrolytic bath through a water-cooled anode current-conducting plate, so that molten salt crusts at the upper part of the bath body, and the service life of a furnace body is prolonged; a large-size tungsten cathode is manufactured through a high-temperature hot melting compression technology, and the current density of the cathode is guaranteed; and MATLAB software is used for compiling a rare earth electrolytic cell electric field numerical model to further optimize electrolytic cell process parameters, the designed electrolytic cell is high in productivity and low in power consumption, produced metal products are good in quality consistency and high in yield, the building cost of the electrolytic cell is low, an electrolytic area in a hearth is regular, the electrolytic cell is convenient to stop and start, the electrolyte dosage is small, and production switching is flexible.

Description

technical field [0001] The invention relates to the technical field of rare earth molten salt electrolysis, and specifically discloses a technical solution for a large-scale cathode rare earth molten salt electrolytic cell. Background technique [0002] The industrial production of light rare earth metals and their alloys mainly adopts the molten salt electrolysis method. The research on rare earth molten salt electrolysis technology in my country began in the 1960s, and currently the rare earth fluoride system oxide electrolysis method is mainly used. The scale of domestic electrolytic cells mainly includes 6KA-25KA grades and other specifications. Among them, the electrolytic cells below the 8KA grade all adopt circular electrolytic cells with a single cathode plugged in. The production capacity of a single furnace is low, the power consumption is high, and the quality consistency of metal products is poor. The yield is low. [0003] Baotou Ruixin Rare Earth Metal Materia...

AI Technical Summary

Problems solved by technology

At present, this kind of multi-cathode electrolytic cell also has certain limitations. The more prominent problems are the high investment cost of electrolytic cell masonry, the irregular electrolysis area in the furnace, the difficulty in implementing automatic metal extraction operations, and the consumption of molten salt when the electrolytic cell is stopped and started. Large, large amount of electrolyte, inflexible production change

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