The recovery of lead-acid batteries is a question that needs attention. The way to collect these questions is the key point. Battery separators believe that third-party efforts can be used to establish a national, standard collection way. If no company has the strength to arrange a national standard approach, it is necessary to focus on standardizing the existing troops engaged in collection. Some companies engaged in recycling used batteries have set up their own collection network, but they need to be guided by companies with exemplary standards. So Liu Yanlong appealed that the main lead-acid battery companies should make rational use of their own sales channels, such as using the old to replace the new methods to collect the sold lead-acid batteries. Disposal. However, if such lead-acid batteries are also dangerous goods, each outlet also needs to make certain preparations to reach the recovery conditions, to be able to engage in collection.
Individual collection is more about the economic interests of the resolution to collect waste batteries to whom to dispose, some recycled companies may be illegal, some recycled and some are not qualified, but still in disposal. Such companies collect waste batteries that can be incinerated in the future to reduce costs. They can also smash batteries'heads and dump waste acid and lead mud inside, which can also constitute pollution. Otherwise, useful plastics, such as plates, can be handed over to illegal factories for disposal. The environmental protection methods of these factories are the foundation of these factories. There is no guarantee that this will constitute secondary pollution, so this can be another primary source of lead-acid battery pollution. Therefore, it is necessary to introduce some applicable rules to standardize the way of collection.
The factors affecting the life of lead-acid batteries are as follows:
Overcharged PE separator, when overcharged, there is a large amount of gas precipitation. At this time, the positive plate active material suffers from gas impact, which will promote the active material to fall off. In addition, the positive grid alloy also suffers serious anodic oxidation and corrosion, so the battery overcharged will shorten the application period.
The discharge depth is due to the weak interaction of the positive active material lead dioxide itself, which produces lead sulfate during discharge and recovers to lead dioxide after charging. The molar volume of lead sulfate is larger than that of lead oxide, and the volume of active material expands during discharge. If one mole of lead oxide is converted to one mole of lead sulfate, the volume increases by 95%. This shrinks repeatedly. If only 20% of the active substance of one mole of lead dioxide discharges, the degree of shrinkage and expansion will be greatly reduced, and the binding force will be destroyed slowly. Therefore, the deeper the discharge depth, the shorter the cycle life.
The lifetime of lead-acid batteries increases with the increase of temperature. The lifetime of lead-acid batteries increases by 5-6 cycles for every increase of temperature between 10 and 35 degrees C. The lifetime of lead-acid batteries increases by more than 25 cycles for every increase of temperature between 35 and 45 degrees C. The lifetime of batteries decreases when the temperature is higher than 50 degrees C due to the loss of vulcanization capacity of the battery separator.
The pollution appearances of lead-acid batteries mainly lie in the recovery link. The production link only needs to be controlled according to the environmental protection requirements. Some new technologies, such as internalization technology, are used to produce the pollution appearances. Usually, the pollution appearances will not occur. Liu Yanlong, secretary-general of the China Chemical and Physical Power Professional Association, said that the "conditions for occupational access to lead-acid batteries" mentioned recovery and regeneration, and the way of collection in these processes could also be an important question of regeneration pollution of lead-acid batteries. At present, the main force of domestic lead-acid battery collection is some individual companies, and most of them are individual people engaged in the collection.
