Cooling electrode for gallium electrolyzing

Abstract

The invention discloses a cooling electrode for gallium electrolyzing. The cooling electrode comprises a cathode electrode plate, an annular anode plate, a circulation water inlet, a circulation water outlet and an electrode ring. A cut-off opening is formed in the annular anode plate, and the interior of the annular anode plate is airtight and hollow. The circulation water inlet and the circulation water outlet are formed in the positions, located at the two ends of the cut-off opening, of the annular anode plate and communicate with the interior of the annular anode plate. The circulation water inlet and the circulation water outlet communicate with a water leading device through pipelines. A flow adjusting valve is arranged on the pipeline between the water leading device and the circulation water inlet, and the electrode ring is connected with the annular anode plate and is arranged opposite to the cut-off opening. By means of the cooling electrode for gallium electrolyzing, the purity of metal gallium obtained through electrolyzing is 4 N, the electric energy utilization rate is high, the electrode plate service life is long, the production cost is low, and the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of gallium electrolysis recovery, in particular to a cooling electrode for gallium electrolysis. Background technique [0002] Gallium, the element symbol is Ga, the atomic mass is 69.72. Gallium metal has a melting point of only 29.78±0.005°C and a boiling point of 2403°C, which is the substance with the longest liquid range. The element abundance of gallium in nature is low (about 0.0015%), and the distribution in the earth's crust is extremely scattered, and there are almost no independent deposits with industrial mining value. Minerals such as chalcopyrite and sphalerite are closely symbiotic. Gallium is a metal element that is extremely important to the development of high-tech industries. Gallium forms compounds with semiconductor properties with group VA elements such as phosphorus and arsenic. It has special application value in optoelectronic devices and is widely used in the electronics industry ...

AI Technical Summary

Problems solved by technology

[0005] At present, electrode materials used in gallium electrolysis electrode plate devices include platinum plates, stainless steel plates, nickel plates, and iron plates. Platinum plates have the disadvantage of high cost, and other materials can easily increase the impurity content in metal gallium during the recycling process. And these impurities are one of the impurities that are difficult to remove in the purification process, and the pollution is relatively large, which increases the difficulty for the next step of high-purity gallium production, and is not suitable for the electrolysis of gallium waste liquid in the high-purity gallium production process.

And its power utilization rate is low, generating a lot of heat

On the one hand, the electrolyte is volatilized in the form of steam, which is wasteful and pollutes the air

On the one hand, the electrode plate is heated, heat and stress are concentrated, deformation or cracking occurs, the service life of the electrode plate is low, the production cost is high, and the production efficiency is low

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