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A kind of preparation method of lead-acid storage battery raw electrode plate reducing floating powder

A technology for lead-acid batteries and raw plates, which is applied in the direction of lead-acid battery electrodes and electrode manufacturing, and can solve the problems of increasing equipment, increasing waste acid containing lead, and consuming energy.

Active Publication Date: 2017-04-05
ZHEJIANG TIANNENG BATTERY JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases two processes, requires additional equipment and consumes energy, and increases lead-containing waste acid, which needs to be reprocessed

Method used

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  • A kind of preparation method of lead-acid storage battery raw electrode plate reducing floating powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Use the following raw materials to prepare 1.13g / cm 3 Acid solution: 20 parts of sulfuric acid, 2 parts of fumed silica, 0.6 parts of sodium lauryl sulfate, and 77.4 parts of water.

[0019] Described leaching acid solution preparation method, comprises the steps:

[0020] (1) First take parts by weight of sulfuric acid and add it to water, and stir while adding, until the temperature of the sulfuric acid solution is lower than 35°C;

[0021] (2) Add parts by weight of fumed silica and sodium lauryl sulfate in sequence to the sulfuric acid solution, and stir for 25-40 minutes to obtain a density of 1.13 g / cm 3 The acid solution, the temperature of the acid solution is controlled at 5-35°C.

[0022] The paste uses lead powder with a lead oxide content of 76%, and the apparent density of the paste is 4.35g / cm 3 , use 1.13g / cm2 in paste 3 Carry out acid-leaching and rolling treatment, dry in a surface drying kiln at 170°C for 15 seconds, and enter the curing drying roo...

Embodiment 2

[0024] Use the following raw materials to prepare 1.11g / cm 3 Acid solution: 16 parts of sulfuric acid, 4 parts of fumed silica, 0.6 parts of sodium lauryl sulfate, 79.4 parts of water. The paste uses lead powder with a lead oxide content of 78%, and the apparent density of the paste is 4.50g / cm 3 , 1.11g / cm2 is used for the raw plate in the paste 3 Carry out acid-leaching and rolling treatment, dry in a surface drying kiln at 140°C for 15 seconds, and enter the curing drying room within 10 minutes. The curing temperature is 70°C and the humidity is 95%. All the other are as embodiment 1.

Embodiment 3

[0026] Use the raw materials of the following parts by weight to prepare 1.08g / cm 3 Acid solution: 13 parts of sulfuric acid, 4 parts of fumed silica, 0.8 parts of sodium lauryl sulfate, and 82.2 parts of water. The paste uses lead powder with a lead oxide content of 80%, and the apparent density of the lead paste is 4.60g / cm 3 , 1.08g / cm2 is used for the raw plate in the paste 3 Carry out acid-leaching and rolling treatment, pass through a surface drying kiln at 120°C for 15 seconds, and enter the curing drying room within 10 minutes. The curing temperature is 78°C and the humidity is 95%.

[0027] According to conventional dilute sulfuric acid immersion acid rolling and embodiment 1 to 3 to prepare green plates, use 4-EVF-150 battery plates to test, each group includes three positive plates and three negative plates respectively, the positive and negative The polar plates were horizontally free-falled from a height of 1m on a flat concrete floor, and the loss ratio of the ...

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Abstract

The invention discloses a preparation method of a lead storage battery green plate for reducing dusting powder. The preparation method successively comprises a gypsum mixing process, a gypsum daubing process and a solidifying and drying process, wherein the gypsum daubing process comprises a daubing section, an acid leaching and rolling section and a surface dry treatment section, and an acid leaching solution is prepared from the following components in parts by weight: 12.5-22 parts of 90-95% vitriol, 1-5 parts of fumed silica, 0.5-1 part of lauryl sodium sulfate and 72-86 parts of water. The method disclosed by the invention is simple in operation and is applicable to a positive electrode and a negative electrode, the diachylon water loss of the green plate is reduced under the condition of not increasing processes, and the dehydrating rate is reduced from original 1% to less than or equal to 0.8%; the possibility of diachylon adhesion between pole plates is reduced, the dusting powder on the surface of the pole plate is lowered, and the loss rate of weight of the pole plate is lowered from 0.5-1% to 0-0.4%.

Description

technical field [0001] The invention relates to the field of storage battery production, in particular to a method for preparing a lead storage battery raw plate with reduced floating powder. Background technique [0002] With the improvement of environmental protection requirements in the lead-acid battery industry, the battery internal formation process has fully replaced the tank formation process, and the raw plate needs to directly enter the processes of slitting, brushing tabs, weighing, and wrapping. Since the active material on the surface of the raw plate is looser than that of the cooked plate, it is easy to fall off, which directly affects the main performance of the battery such as capacity and life, and the dust that falls off is also a source of pollution, which is difficult to deal with. In order to reduce the cost of environmental protection, it is necessary to reduce the generation of floating powder at the source of plate manufacturing. [0003] Applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/04H01M4/20
CPCH01M4/16H01M4/20H01M4/21Y02E60/10
Inventor 李春景陈战营仲华李军方明学
Owner ZHEJIANG TIANNENG BATTERY JIANGSU
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