Rare earth molten salt electrolytic cell with novel electrode structure

An electrode structure, molten salt electrolysis technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve the problems of uneven distribution of electric heating field, unstable electrolysis production process, etc., to improve electrolysis current efficiency, easy industrial processing, electric heating The effect of uniform field distribution

Active Publication Date: 2016-06-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the current technical problem of uneven distribution of the electric heating field in the electrolytic cell, which leads to unstable electrolytic production process, the present invention provides a new type of electrode that can prolong the service life of the electrode, facilitate electrode processing, and have a more uniform distribution of the electric heating field in the electrolytic cell Structural Rare Earth Molten Salt Electrolyzer

Method used

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  • Rare earth molten salt electrolytic cell with novel electrode structure
  • Rare earth molten salt electrolytic cell with novel electrode structure
  • Rare earth molten salt electrolytic cell with novel electrode structure

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Embodiment 1

[0021] See figure 1 , figure 2 , image 3 , Figure 4 This embodiment is provided with two rows of anodes and two rows of cathodes. The bottom surface of the anode is "V" shaped. Each anode is composed of two anode blocks. The bottom surfaces of the two anodes enclose an inverted "V"-shaped inclined surface, and two The distance between the anodes is 10mm, all sharp corners at the bottom of the anode are chamfered, and the chamfering radius is 30mm. The top of the cathode is in the shape of a triangular prism. The upper part of each cathode corresponds to the middle of two anodes surrounded by an inverted "V" shape. The entire cathode is composed of a triangular prism at the top and a rectangular parallelepiped below it. All sharp corners are chamfered, and the chamfering radius is 10mm. In this embodiment, one anode is composed of two anode blocks, and a gap is left between the two anode blocks, so that the bubbles at the bottom of the anode can be quickly discharged. In thi...

Embodiment 2

[0023] See Figure 5 In this embodiment, each row of anodes is composed of four anode blocks. The two anode blocks in the middle part of each row of anode blocks are inverted trapezoid, and at the beginning and the end are inclined blocks that match the adjacent middle parts. All the anode blocks are surrounded by three anodes with an inverted “V”-shaped bottom surface, and the distance between the two anodes is 20mm. All sharp corners at the bottom of the anode are chamfered, and the chamfering radius is 50mm . The top of the cathode is in the shape of a triangular prism. The upper part of each cathode corresponds to the middle of two anodes surrounded by an inverted "V" shape. The entire cathode is composed of a triangular prism at the top and a rectangular parallelepiped below it. All sharp corners are chamfered, and the chamfering radius is 20mm. The gap between the two anode blocks allows the bubbles at the bottom of the anode to be quickly discharged. In this embodimen...

Embodiment 3

[0025] In this embodiment, a cathode is placed below the anode. The bottom surface of the anode is in a "V" shape. Each group of anodes is composed of two anode blocks. The bottom surfaces of the two anodes form an inverted "V"-shaped slope, and the distance between the two anodes is 30mm, all sharp corners at the bottom of the anode are chamfered, and the chamfer radius is 80mm. The top of the cathode is in the shape of a triangular prism. The upper part of each cathode corresponds to the middle of two anodes surrounded by an inverted "V" shape. The entire cathode is composed of a triangular prism at the top and a rectangular parallelepiped below it. All sharp corners are chamfered, and the chamfer radius is 30mm. In this embodiment, one anode is composed of two anode blocks, and a gap is left between the two anode blocks, so that the bubbles at the bottom of the anode can be quickly discharged. In this embodiment, there are a total of 6 groups of anodes and 6 corresponding g...

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Abstract

The invention discloses a rare earth molten salt electrolytic cell with a novel electrode structure. The bottoms of anodes are in the shape of inverted V or single slope; a group of cathodes is correspondingly arranged below each group of anodes; the cathodes are embedded into a raised high-temperature anti-corrosion material; the tops of the cathodes are of triangular prisms, and are protruded to the outside of the high-temperature anti-corrosion material; a metal groove formed by sinking the high-temperature anti-corrosion material is arranged between every two cathodes; cathode steel rods are positioned on the bottoms of the cathodes, and are connected to the cathodes; and an unloader is arranged on the top of an electrolytic cell body. According to the rare earth molten salt electrolytic cell disclosed by the invention, the shapes of the anodes are beneficial for anode bubble discharge; the high-temperature zone of the electrolytic cell is moved upwards as a result of the designs of the cathodes and the metal grooves; the secondary reaction of rare earth metal is restrained; and the current efficiency is improved.

Description

Technical field [0001] The invention belongs to the field of rare earth molten salt electrolysis, and specifically relates to a rare earth molten salt electrolytic cell with a novel electrode structure. Background technique [0002] At present, the upper opening of the electrolytic cell for industrial production of rare earth metals is open, and the cathode and anode are cylindrically arranged in parallel and vertical. This structure leads to low production efficiency of the current rare earth metal electrolysis, serious environmental pollution, large fluctuations in process parameters, and difficulty in achieving large-scale and automation, which seriously hinders the further development of rare earth electrolysis technology. Studies have shown that the current structure of the rare earth molten salt electrolytic cell body open radiation heat dissipation accounted for 44.5% of the total heat expenditure, resulting in the electrolytic cell having to use high voltage to maintain t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/34C25C7/02
CPCC25C3/34C25C7/025
Inventor 吕晓军曾小鹏双亚静蒋良兴刘建华
Owner CENT SOUTH UNIV
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