Separation and recycling method for partition plates in waste lead-acid storage batteries

Abstract

The invention discloses a separation and recycling method for partition plates in waste lead-acid storage batteries. The method comprises the following steps of separating the partition plates, loosening and disassembling the partition plates, conducting carbonization treatment, acidifying and dissolving, performing recycling, and recovering waste lead, so that glass fibers and waste lead impurities bonded with the surfaces of the glass fibers are effectively separated from each other, and resource recycling of the waste partition plates is promoted. According to the method, high additional energy consumption caused by the fact that the partition plates participate in smelting of regenerated lead is avoided, slag discharge is greatly reduced, the pollution control cost is reduced, the economic benefits of the regeneration industry are increased, and improvement of an energy conservation and emission reduction process is greatly promoted.

Description

technical field [0001] The invention belongs to the technical field of recycling lead-acid batteries, and in particular relates to a method for separating and recycling waste lead-acid battery separators. Background technique [0002] The separator is an important part of the battery, and the glass fiber separator is made of ultra-fine fibers processed from high-purity borosilicate glass and then made by papermaking technology. It has a small pore size and can absorb a large amount of electrolyte. It is the best performance today. Lead-acid battery separators are expensive. However, in the dismantling process of scrap lead-acid batteries, whether it is traditional manual dismantling or automatic dismantling, it is difficult to cleanly separate the glass fiber separators from the waste batteries directly, because the separators are mixed between the plates and broken It is easy to dismantle the plaster plaster and mix it into the fiber gap of the partition, which is difficul...

AI Technical Summary

Problems solved by technology

[0002] The separator is an important part of the battery, and the glass fiber separator is made of ultra-fine fibers processed from high-purity borosilicate glass and then made by papermaking technology. It has a small pore size and can absorb a large amount of electrolyte. It is the best performance today. Lead-acid battery separator, its cost is high and expensive

However, in the dismantling process of scrap lead-acid batteries, whether it is traditional manual dismantling or automatic dismantling, it is difficult to cleanly separate the glass fiber separators from the waste batteries directly, because the separators are mixed between the plates and broken It is easy to dismantle the plaster plaster and mix it into the fiber gap of the partition, which is difficult to remove completely. The partition with a large amount of plaster dust and other impurities can not be discarded without treatment. If simple collection Sealed up, it will accumulate more and more, pile up like a mountain, so most recycling companies are forced to put it into smelting furnace for smelting and recycling, which not only greatly increases energy consumption, but also greatly increases the amount of waste slag, and this slag is difficult to reuse , resulting in a huge waste of resources

At the same time, the residual lead in smelting waste slag often exceeds the standard and cannot be discharged directly. It is difficult and costly to extract and recycle for harmless treatment. The cost of outsourcing commissioned treatment is as high as 3,000 yuan / ton. 5,000 yuan / ton, so how to recycle battery separators has always been a problem in secondary lead smelting. If this problem can be effectively solved, it will not only be of great environmental significance, but also have huge economic benefits