Shell-crushing and energy-saving cleaning technology for waste lead-acid storage battery

Abstract

The invention provides a shell-crushing and energy-saving cleaning technology for a waste lead-acid storage battery. According to the working principle of the method, the waste storage battery is crushed by an impact hammer crusher; the crushed materials are cleaned by a vibration screen and a lead paste is separated out; the materials are separated by combination of buoyancy of water and compressed air according to the physical characteristics (the proportions of the materials are different) of fragment materials of the storage battery; and separated polypropylene plastic enters a hydraulic separator after being washed in the vibrating movement process, and is sent out of a system through a polypropylene screw conveyor which is connected with an outlet at the upper part of the hydraulic separator for stacking. Compared with relatively advanced waste lead-acid storage battery recovery technology at home and abroad, the shell-crushing and energy-saving cleaning technology is high in cleaning efficiency and few in pollutants; recovered plastic is high in quality; the technology is simple and easy to operate; and the recovery rate is high, so that the production cost is low.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery recycling, in particular to an energy-saving cleaning process for broken shells of waste lead-acid batteries. Background technique [0002] At present, due to the unsatisfactory urban traffic conditions, more and more citizens buy electric bicycles. Generally, electric bicycles use a set of 3 or 4 lead-acid batteries, and their weight is about 12 to 16 kilograms. Lead-acid batteries are mainly composed of lead, sulfuric acid and some other metals and plastics. The average service life of this type of battery is 1 year, so a large number of lead-acid batteries are scrapped every year, which is worrying, and the disorderly management of lead-acid batteries has become a serious social problem. Vendors bought back used lead-acid batteries, dismantled them by hand, poured out the waste acid on the spot, and sold the disassembled lead plates of the batteries. However, there are still a large...

AI Technical Summary

Problems solved by technology

However, there are still a large amount of lead powder (lead mud) in lead-acid batteries, as well as recyclable plastic products. It is a waste of resources that these materials are not classified and recycled, and lead can also cause heavy metal poisoning, which is harmful to the human body. harm

[0003] However, the current recycling process is backward, and the mixed pulverization recycling method is generally used. The recovery rate is low and the cost is high. Many recyclable substances are not recycled and discharged, especially some harmful substances such as lead are often not recycled and only diluted and discharged. , not only waste resources, but also pollute the environment