Air cooling cathode, molten salt electrolyzer and electrolysis method

Abstract

The invention discloses an air cooling cathode, a molten salt electrolyzer and an electrolysis method. The air cooling cathode comprises a cathode connecting rod and a cathode plate arranged at the lower end of the cathode connecting rod, wherein a gas channel is arranged in the cathode connecting rod and an opening, which penetrates through the upper end of the cathode connecting rod, of the gas channel is a gas inlet; a cooling channel is formed in the cathode plate and an opening, which penetrates through the upper end of the cathode plate, of the cooling channel is a gas outlet; the gas channel is communicated with the cooling channel. The molten salt electrolyzer is electrolyzing equipment with the air cooling cathode as an electrolysis cathode. The electrolysis method is a method applying the molten salt electrolyzer. The air cooling cathode is beneficial to studying the precipitation process of a metal in the cathode, and thus the optimal electrolysis parameters are conveniently found, and the electrolysis efficiency is improved. According to the air cooling cathode, the molten salt electrolyzer and the electrolysis method disclosed by the invention, in the process of manufacturing the cathode, only the gas channel is needed to be added, so that the air cooling cathode is simple in structure and good in cooling effect, does not need large design investment and has strong application and popularization prospect.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to an air-cooled cathode, a molten salt electrolysis device and an electrolysis method. Background technique [0002] Molten salt electrolysis is an important method for smelting non-ferrous metals, especially for the preparation of active or high melting point metals, such as magnesium, aluminum, titanium, zinc, zirconium, etc. The principle of molten salt electrolysis is to generate electrolytic products by ions gaining and losing electrons on the electrode under the action of direct current, and usually get metal products on the cathode. During the electrolysis process, the precipitation and collection of metal products on the cathode seriously affect the efficiency of electrolysis. Therefore, it is of great significance to study the morphology characteristics of the precipitation and collection of metal products at the cathode for improving the efficiency of electrolysis. ...

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Problems solved by technology

[0003] At present, for the precipitation process of liquid phase products, such as liquid magnesium, there have been reports on the characteristics of electrolytic precipitation products under different conditions, such as pages 225 to 231 in "Magnesium Electrolysis Production Technology" published in August 2006 Pages and pages 461 to 469 disclose a study of using quartz tubes to store electrolytes to observe the precipitation process of liquid magnesium at the cathode. Since it is to observe liquid phase products, the electrode position and heating method make it possible to observe The effect is not good, and when there are colored ions or impurities in the electrolyte, the light transmittance of the electrolyte becomes poor, and even the morphology changes of magnesium precipitation and collection cannot be observed at all

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