A discharge, collection and recycling method of the electrolyte of the wasted accumulator

Abstract

The invention relates to a method for discharging, collecting and recycling the electrolyte in a waste battery. A hydraulic grab crane is used for breaking or cracking a battery shell, the electrolyte solution flows to a ground warehouse, the broken or cracked battery shell is sent to a vibration feeder to further flow out one part, the liquid is collected to a liquid receiving plate which is arranged at the lower part of a belt conveyor and is collected to the ground warehouse, all the electrolyte is collected to a liquid collection pit which is arranged at the bottom of the ground warehouse through the bottom surface of the ground warehouse and is sent into a filter for filtration by a submerged pump, the filtrate is sent to a diluted acid storage intermediate tank of a primary lead production acid-making system by an electrolyte transport pump, and then is supplied into the acid-making system according to acid-making needs for producing an industrial sulfuric acid; the invention changes the conventional grab form of past smelting industry, reduces special acid placing equipment, utilizes the public accommodations of primary lead production acid-production plants for recycling and utilizing waste electrolyte, reduces the pollution of smelting industry to environment, adopts mechanized operations, reduces the labor intensity of workers and has the advantages of high industrialization degree, good working environment and low investment.

Description

technical field [0001] The invention belongs to the technical field of comprehensive recycling of waste lead storage batteries in the nonferrous metal smelting industry, and in particular relates to a method for pouring out, collecting and recycling electrolyte in waste storage batteries. Background technique [0002] With the rapid development of the automobile industry and the electronics industry, batteries have become an important part of the products in this industry. While batteries bring convenience to people's work and life, they also bring hidden dangers of pollution. Waste batteries after use contain A large amount of heavy metals and electrolytes, whether the used batteries are buried deep or stacked with bare drains, heavy metals and electrolytes will overflow, causing groundwater and soil pollution, which will seriously endanger human health. Lead storage battery is currently the most widely produced and used battery in the world, and its sales account for more ...

AI Technical Summary

Problems solved by technology

At present, from the perspective of the overall domestic level, the production scale of secondary lead is small, the energy consumption is high, and the industrial technology is backward. Only valuable metals are recovered, and the recycling and comprehensive utilization rate of the electrolyte solution is very low. Pollution of the environment and groundwater resources; some recycled lead production units also use alkali neutralization method to treat the waste electrolyte to be neutral and then discharge it. of solid waste, causing secondary pollution

The internationally advanced CX integrated system is used to deal with waste lead-acid batteries. The recovery of the electrolyte is bought out to other industries or using NaOH or Na 2 CO 3 The solution reacts with dilute sulfuric acid, and then processed into sodium sulfate. This treatment method also has shortcomings. If it is necessary to build a sulfate production plant, it will increase investment, and at the same time, the production of sulfate needs to increase raw materials, and the production chain will be extended.

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