Equipment for recycling lead acid car batteries
With the continuous expansion of the application fields of lead-acid batteries, such batteries have begun to be used in automobiles, electric vehicles, communications and other fields, resulting in an increasing demand for lead-acid batteries and further promoting the production of lead-acid batteries The expansion of production capacity has promoted the sustainable development of the lead-acid battery production industry. With the rapid development of the lead-acid battery industry, a large number of waste lead-acid batteries are produced every year, and it is also a heavy task to deal with these large quantities of lead-acid batteries, which are increasing year by year, especially for them. Environmentally friendly treatment reduces the pollution of these batteries to the environment.
Recycling methods of waste lead-acid batteries:
In terms of waste lead-acid battery recycling technology, the fire method is currently used more often, but the high temperature method of the fire method not only requires high equipment, but also easily generates dust during the treatment process. Therefore, enterprises are using the fire method to process waste lead. Acid batteries need to spend more money on equipment investment.
The more promising wet method requires continuous technical improvement and development due to its low treatment efficiency, so as to improve the treatment efficiency of the wet method for waste lead-acid batteries.
Recovery Technology of Waste Lead from Waste Lead-acid Battery
The technologies for recycling waste lead from waste lead-acid batteries are generally divided into three types: pyrometallurgy process, hydrometallurgy process, and solid-phase electrolysis process.
Refined lead ingots from waste lead
1. Pyrometallurgy process
Pyrochemical treatment of waste lead-acid batteries mainly adopts reduction smelting. In addition to adding reducing agents, fluxes such as iron filings, sodium carbonate, limestone, quartz and fluorite can also be added during smelting.
2. Hydrometallurgy process
The battery fragments obtained after dismantling and pretreatment of waste lead-acid batteries are a mixture of metallic lead, lead oxides, lead salts, and other metals such as copper, silver, and arsenic.
Hydrometallurgy technology, also known as electrolysis, selectively reduces all lead compounds in battery fragments to metallic lead by means of electricity. Its main feature is that there is no waste gas and waste residue during the smelting process, and the recovery rate of lead can reach 95~97%.
The working principle of hydrometallurgy technology is to add a reducing agent in the solution, and the reducing agent in the lead reduction process can be configured with steel pickling wastewater to achieve the purpose of "treating waste with waste".
3. Solid phase electrolysis process
The solid-phase electrolysis process uses sodium hydroxide aqueous solution as the electrolyte, and the cathode and anode are made of stainless steel plates. During electrolysis, the solid-phase leaded substance molecules in the lead paste obtain electrons from the surface of the cathode and reduce them to metallic lead.
The above is a brief introduction to the current situation and process of recycling waste lead-acid batteries. Waste lead-acid batteries contain high lead, and their recycling has strong economic and environmental benefits. According to the characteristics of lead-acid batteries, SUNYG ROUP has developed a complete recycling production line, which integrates lead-acid battery dismantling, lead and plastic recycling, and lead smelting, and provides customers with comprehensive technical solutions. If you need it, welcome Feel free to contact us for consultation.
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