Plate drying process

Abstract

The invention discloses a plate drying process, which comprises the following steps of: when plates are grooved, uniformly loosening the negative plates piece by piece, directly placing the negative plates on a steel frame, and placing the whole steel frame in a pure water tank; after the grooving of the negative plates is finished, hoisting all the negative plates on the frame to a pool by using a traveling crane, and rinsing the negative plates from top down by using tap water, wherein supplied water and discharged water form counter current, and a pH value of the plate rinsing water is 5 to 7; after the rinsing is finished, feeding the plates into a boric acid pool, and impregnating the plates by using boric acid solution with the density of 1.025 to 1.045 g / cm<3> at 65 DEG C for 15 to 20 minutes; after the boric acid impregnation is finished, placing all the plates on the frame below an axial flow fan blowing air from top to down, and performing air blowing for 30 to 60 minutes in summer and 45 to 90 minutes in winter; and after the air-drying is finished, placing the plates into a Zhongnan drying kiln and performing drying for 40 minutes, wherein the temperatures of three drying stages are 160 DEG C, 150 DEG C and 120 DEG C respectively. The process provided by the invention is used for treating the negative plates, increases the lead metal content of the negative plates, avoids the pates being oxidized in storage and reduces the labor intensity of workers in the plate drying process.

Description

A plate drying process technical field The invention relates to a drying process, in particular to a polar plate drying process. Background technique The lead oxide content of the negative plate is very important for battery assembly, especially in the south where the temperature is high. The high lead oxide content of the negative plate will directly lead to a sharp rise in the temperature of the battery during the acid addition process, causing the battery to bulge. If the negative plate is anti-oxidation treatment If it is not done well, it will be directly oxidized in contact with air during storage, which will also cause its lead oxide to exceed the standard, and the content will reach 40% in severe cases. Once such plates are added with acid, the battery will not only bulge, but also increase Difficulty in adding acid, usually the amount of acid that can be added in 2 times needs 4 or more steps to add, and it is dangerous. Once acid occurs, the acid amount of the ba...

AI Technical Summary

Problems solved by technology

The lead oxide content of the negative plate is very important for battery assembly, especially in the south where the temperature is high. The high lead oxide content of the negative plate will directly lead to a sharp rise in the temperature of the battery during the acid addition process, causing the battery to bulge. If the negative plate is anti-oxidation treatment If it is not done well, it will be directly oxidized in contact with air during storage, which will also cause its lead oxide to exceed the standard, and the content will reach 40% in severe cases. Once such plates are added with acid, the battery will not only bulge, but also increase Difficulty in adding acid, usually the amount of acid that can be added in 2 times needs 4 or more steps to add, and it is dangerous. Once acid occurs, the acid amount of the battery needs to be added again, so it is rare to be careless There will be more acid, less acid