Tank face integral sealing device for electrodeposition production in sulfuric acid system

Abstract

The invention relates to a tank face integral sealing device for electro-deposition production in a sulfuric acid system. A tank sealing cover is arranged on an upper opening of an electrolytic tank, an airflow channel is arranged below the tank sealing cover, O2 and H2 are respectively led in a gas guide pipe on two sides of the tank sealing cover, a valve and a voltage stabilizer are installed on the gas guide pipe, the outlet end of the voltage stabilizer is respectively connected with a water ejector and a circulating water pump through a tee joint, the inlet end of the water ejector is communicated with the outlet end of the circulating water pump, the outlet end of the water ejector is connected into the top of the circulating water pump, the inlet end of the circulating water pump is connected with a circulating water tank, and an exhaust pipe is installed at the top of the circulating water tank. The tank face integral sealing device for the electro-deposition production in the sulfuric acid system prevents gases from contacting and mixing in a conveying process and eliminates a hidden danger of explosion. Simultaneously, heavy metal ions and free acid which are mixed in the gases are separated effectively, thereby improving spot operation environment, saving energy, and protecting environment.

Description

technical field [0001] The invention relates to an integral sealing device for the groove surface used in electrowinning production in a sulfuric acid system, specifically a device for sealing O produced in the electrowinning process. 2 、H 2 And the device that transfers and separates the free acid that overflows the liquid surface with the gas, so that it can be discharged harmlessly. Background technique [0002] The development of solvent extraction technology has enabled the successful application of cobalt electrowinning technology in non-hydrochloric acid media, and the electrowinning of important non-ferrous metal materials such as Co, Cu, and Ni in sulfuric acid media will gradually become the mainstream process for their refining production. [0003] In the process of producing colored heavy metals by electrodeposition in sulfuric acid system, in addition to the main reaction of metal electrodeposition, some corresponding reactions also occur: [0004] Me 2+ +2e...

AI Technical Summary

Problems solved by technology

The explosion limit of hydrogen in air is 4%-74.2%, and its concentration range is extremely wide. However, due to the limitation of the site conditions, the volume of the groove surface sealing cover is small, so the possibility of forming an explosive gas mixture in the cover is extremely high. During the electrowinning process, sparks may be generated at each contact, or due to short circuit, poor contact, and high heat may also easily occur. If the instantaneous temperature reaches the hydrogen self-ignition point (574°C), an explosion will occur, endangering safe production.

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