A production line for zinc stripping, stripping and brushing for electrolytic zinc deposition on small plates and method thereof

Abstract

The invention discloses a zinc peeling, plate removing and plate brushing production line and method used for small electrode plate zinc electrodeposition. The zinc peeling, plate removing and plate brushing production line comprises two pre-peeling devices. Two pneumatic hammer rapping devices are arranged on the upstream portion of the pre-peeling devices, and a peeling device is arranged on the downstream portion of the pre-peeling devices. A zinc plate conveying and stacking device used for collecting a zinc plate where peeling is completed is arranged under the peeling device. Collection chains used for hoisting a negative electrode plate, carrying zinc, out of a tank are arranged on the upstream portion of the two pneumatic hammer rapping devices. Output chains used for collecting the negative electrode plate where the zinc peeling operation is completed are arranged on the downstream portion of the peeling device. A brushing and washing device used for scouring an electric conduction rod and brushing and washing the negative electrode plate is arranged above the output chains. Removing chains are arranged between the peeling device and the output chains. The invention further discloses the zinc peeling, plate removing and plate brushing method used for the small electrode plate zinc electrodeposition. According to the method, the zinc peeling operation is completed through two times of rapping, the two times of pre-peeling and one time of peeling in sequence. By means of the production line, the scale of labor employment is reduced, the operation environment of workers is improved, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of zinc smelting, and more specifically relates to a zinc stripping, stripping and brushing production line for electrodeposited zinc on small plates. Background technique [0002] The small-plate hydrometallurgy zinc smelting process is widely used in most large-scale zinc smelters and small zinc smelters built in the early stage in China. There are three types of cathode plates ranging from 1.13㎡ to 1.6㎡. There are two ways to connect the conductive rods of the cathode plates: clamping and lapping. Plate spacing also varies. The electrowinning cycle of the existing small plates basically adopts a 24-hour cycle, that is, within 24 hours, all the cathode plates in the electrolytic cell must be loaded out of the cell once to complete the zinc stripping operation; The zinc sheet formed by electrolysis on the surface of the aluminum cathode plate is thin and light in weight, so the number of cathode plates in...

AI Technical Summary

Problems solved by technology

The units introduced by domestic zinc smelters mainly include Belgian Paul Wurth automatic zinc stripping unit: this unit integrates the pre-stripping device and the zinc stripping machine, and the cathode plate is lifted from the conveyor chain by the lifting mechanism for pre-stripping and stripping. Operation, that is, the structure of the plate moving knife does not move, the design operating speed is 300 pieces / hour, combined with the use effect of several major manufacturers who have introduced this unit in China, the pre-stripping device has no effect, all of them are disabled or removed, and the pre-stripping is performed manually , the actual operating speed of the unit is below 220 yuan; Mitsui’s zinc stripping unit in Japan: Mitsui’s unit has different layouts for the 3.2㎡ cathode plate and 2.6㎡ cathode plate, and the pre-stripping and stripping devices used are also different; but the common point is that they all use A large-amplitude air hammer was used to vibrate the cathode plate. Due to the large amplitude, the damage to the cathode plate was greater, and the opening effect was not ideal. The air hammer of the 2.6㎡ unit in Zhuzhou Smelter has been disabled, and the pre-opening operation relies on manual work. Completed, the production speed is also below 220 yuan

[0004] However, the design layout and design production speed of this type of large-plate automatic stripping zinc unit are completely unable to adapt to the zinc plant with a large base of cathode plates and a 24-hour electrowinning cycle.

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