Electrolytic tank cover for preventing and controlling acid mist

Abstract

The invention relates to an electrolytic tank cover for preventing and controlling acid mist. The electrolytic tank cover is a cube and is provided with long and short side walls and a top plate, and a netlike supporting structure is arranged on the inner surface of the cube; the netlike supporting structure comprises an air draft branch pipe arranged along the longitudinal central line of the cube and reinforcing ribs arranged on two sides of the air draft branch pipe at equal intervals; two side walls of the air draft branch pipe are provided with air draft holes; and the short side wall of the cube is provided with a hole, and the hole is communicated with the air draft branch pipe. The electrolytic tank cover has the characteristics of reasonable structural design, high strength, light mass, convenience in artificial lifting and detachment, high acid mist pumping efficiency, capability of realizing thorough prevention and control of the acid mist and the like.

Description

technical field [0001] The invention relates to the technical field of acid mist treatment, in particular to an electrolytic cell cover for preventing and controlling the acid mist generated in the hydrometallurgy process. Background technique [0002] In the wet smelting process of non-ferrous metals such as copper, zinc, cobalt, nickel, lead, etc., the electrolytic cell is generally filled with sulfuric acid or a mixed weak acid solution of sulfuric acid and hydrochloric acid, and the working temperature is in the range of 40~70°C. During the operation of the electrolyzer, the acid electrolyte will volatilize in large quantities from the open electrolyzer. In addition, in the electrowinning process of metals such as copper and cobalt, while high-purity metals are precipitated at the cathode, a certain amount of oxygen, chlorine, etc. are also produced at the anode. The gas produced by these reactions will adhere to the acid droplets and escape from the liquid surface, and...

AI Technical Summary

Problems solved by technology

[0008] However, there are some deficiencies in the structure of the arc top tank cover: 1) There is no through exhaust branch pipe in the tank cover, and only one end of the tank cover is provided with an exhaust port, which leads to uneven extraction of acid mist above the entire electrolyte surface and poor exhaust efficiency. Low, still most of the acid mist escapes from the bottom groove of the cover

2) The surface area of ​​the arc top groove cover structure is large, and the height of the cover body designed by the groove structure is high. However, the weight of the cover is very heavy, and it is extremely inconvenient to manually lift and unload it. It needs to be used with a crane. Therefore, it is difficult to popularize and apply it in some domestic electrolysis workshops with a low level of automation.

3) When performing operations such as checking the short circuit and flushing the busbar, the arc top groove cover must be frequently moved, which is labor-intensive

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