The significance of desulfurization solution in lead-acid battery resource recovery system:
A large amount of acidic heavy metal industrial wastewater is generated during the manufacturing and production process of lead-acid batteries. If discharged without treatment, it will inevitably bring great harm to the environment and society. Lead and cadmium in wastewater are heavy metal elements and are a type of pollutant. If not recycled and treated, not only will large areas of land be needed for stacking or landfilling, but lead is also a toxic substance. Sulfuric acid has strong corrosiveness, and they will cause significant harm to the environment and soil, while also resulting in a large amount of resource waste. Therefore, effective pollution treatment must be carried out on waste lead-acid batteries.
Recycling technology for waste lead-acid batteries:
A technology for recycling recycled lead from waste lead-acid batteries and achieving comprehensive utilization of its components. Through automatic crushing and sorting of waste batteries, each component of the battery is treated to achieve the goal of recycling.
Process flow of waste lead-acid battery treatment:
The process flow includes crushing, sorting, and desulfurization of waste lead-acid batteries with lead paste (desulfurization and by-product recovery technology; oxygen enriched combustion technology, plastic granulation technology, carbon reduction smelting technology, refining and alloy configuration technology)
1. After desulfurization, the PbSO4 in the lead paste is converted into PbCO3, which can lower the smelting temperature by 300 ℃, achieve low-temperature smelting of lead paste, reduce energy consumption, and minimize the generation of lead dust;
2. To prevent or reduce the emission of SO2 pollutants into the atmosphere during the lead paste smelting process, reducing the burden of tail gas desulfurization on smelting units and making it more environmentally friendly;
3. The comprehensive recovery and utilization of S element in lead paste can be achieved, and high-purity by-products such as ammonium sulfate or sodium sulfate can be prepared, creating more economic value.
2024-09-11
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