What is battery recycling? And What are the different Processes for Battery Recycling?

1.  Return to site What is battery recycling? And What are the What is battery recycling? And What are the different Process for Battery Recycling? different Process for Battery Recycling? August 18, 2020 Battery recycling is the reuse and reprocessing of batteries to reduce the number of batteries that are disposed of. Batteries contain many toxic chemicals and heavy metals, and their release has created environmental problems due to water and soil contamination. Therefore, batteries must be recycled for health and environmental bene?ts. According to Wikipedia “Battery recycling is a recycling activity that aims to reduce the number of batteries that are disposed of as municipal waste. Batteries contain various heavy metals and toxic chemicals, and their disposal using the same procedures as normal trash has raised concerns about soil and water contamination. " Battery recycling process Almost all batteries can be recycled, but some can be easily recycled more than others. For example, lead-acid batteries are 99% recyclable, especially due to their lead content and toxicity. Other types of batteries such as lithium-ion, nickel-cadmium (Ni-Cd), nickel-zinc (Ni-Zn), nickel-metal hydride (Ni- MH), and lithium-ion (Li-ion) are also recyclable. The following subtopics explain in detail the different mechanisms and stages of recycling different batteries. 1. Recycling of lead-acid batteries There are ?ve basic steps to recycling lead-acid batteries: Collection: batteries are collected at waste disposal and collection points and taken to the recycling plant. Shredding: Upon reaching the recycling plant, the battery is shredded in a hammer mill (the machine that breaks the battery into small pieces). Classi?cation: The fragments are transferred to a container in which heavy metals and lead are separated from the plastic. Screening: Polypropylene parts are hollowed out and liquids are screened to leave only lead and heavy metals. The polypropylene parts are washed and then transported downstream to make new

2. battery boxes. Hydro-metallurgical and Pyro-metallurgical processes: these are the processes used to extract precious metals and minerals from their ores. This is the last process used in battery recycling to extract lead and other heavy metals from battery waste after step four. Hydrometallurgy is an extraction process that uses aqueous chemistry in a process complemented with pyro-metallurgy, which facilitates chemical and physical transformations to recover lead and other precious metals. The process includes calculations, roasting, smelting, and re?ning to obtain the ?nal lead product. Plastics (polypropylene parts) are washed and dried and then sent to downstream Plastic Recycling, where they are processed and reused to make new battery boxes. They can also be sold to plastics manufacturers as raw materials. Lead materials are cleaned and passed through hydrometallurgical and pyro-metallurgical processes where they are calculated, roasted, and melted. The resulting molten lead is then re?ned by aqueous chemical treatment and puri?cation to remove any contaminants. The ?nal products are then poured into block molds and allowed to cool. After cooling, they are removed from the mold and taken to battery manufacturers, where they are reused to make new lead plates and other battery components. Old battery acid is processed in two ways: 1. Neutralization of acid with basic industrial compounds that transform acid into water. The water is puri?ed, treated, and tested to ensure that it meets water standards. It is then released into the public sewer system. 2. It can also be converted to sodium sulfate. Sodium sulfate is an odorless white powder that is used to make detergents, textiles, and glass. Alternatively, the acid can be reused to make new batteries using a special recycling process. 2. Recycling of alkaline zinc-air / zinc-carbon batteries Alkaline zinc-air / zinc-carbon batteries are 99.9% recycled in an innovative mechanical disassembly process in which battery parts are classi?ed into three ?nished products. These parts include 1) steel, 2) paper and plastic, and 3) zinc and manganese concentrate. They are then all returned to recycling facilities where they are reused to make new products. 3. Recycling of lithium-ion, nickel-metal hydride, and nickel-cadmium batteries 99.9% of the components of these batteries are recycled into reusable products. Before fusion, plastics are separated from metal components and the resulting parts are reused to make the respective material products. The leftovers are melted using a high-temperature metal recovery (HTMR) process. The process allows us to recover metals such as iron, manganese, nickel, and chromium. These metals are generally extracted by hydrometallurgical and pyro-metallurgical processes. The recovered parts are then transported to recycling facilities to be reused to make new products. 4. Recycling of lithium batteries The batteries are hammered to reveal the internal components of the battery. The plastics are removed and the internal parts are crushed into small pieces. The resulting waste is immersed in basic (caustic) water to neutralize the electrolytes. Ferrous and non-ferrous metals are then separated. The clean scrap is then used to make new products or sold to recyclers. Then the remaining solution is ?ltered and goes through the carbon and lithium recovery process. Some of the recovered carbon is recycled, while the lithium is converted into lithium carbonate, which is used to make lithium metal sheets and bars for batteries. 5. Recycling of mercury batteries Mercury batteries are handled with great care and, due to the high toxicity of the heavy metals they contain, they are recycled at controlled temperatures. Hydro-metallurgical and pyro-metallurgical recycling processes are used but in a highly controlled material extraction environment. The extracted mercury is reused in the manufacture of new mercury-based batteries, in dental amalgams and metric instruments, and for ?uorescent lighting. Other components such as plastics and metallic materials are reused to make their respective products. However, it should be noted that the manufacture of

3. batteries containing mercury is in decline and is even banned in some countries due to the potential risk to human health and the Environment Health. Previous Electric Vehicle Battery Recycling in India: An... Next    Return to site Powered by Strikingly     