Can the battery be recycled?

Waste batteries are not waste, but they contain a lot of non-ferrous metals, and non-ferrous metals are precious non-renewable resources on the earth. The best way to deal with waste batteries is to recycle them, extract useful components from them, and turn waste into resources. However, the environmental problems caused by waste batteries have not attracted much attention in our country. Therefore, the research and development of waste battery recycling, treatment and disposal technology is almost zero, and only a few units have just started in this regard. At present, there is a lack of advanced maturity in China. Waste battery processing technology. Except for the lead-acid batteries used in automobiles, which are recycled, other types of waste batteries are thrown away. There are roughly three ways to dispose of used batteries internationally: solidification and deep burying, storage in waste mines, and recycling. 1. Solidification is buried deep and stored in waste mines. For example, a French factory extracts nickel and cadmium from them, and then uses nickel for steelmaking, and cadmium is reused for battery production. The rest of the various types of waste batteries are generally transported to special toxic and hazardous waste landfills, but this approach is not only too expensive but also wasteful, because there are still many useful materials that can be used as raw materials. 2. Recycling (1) Heat treatment There are two factories in Switzerland that specialize in the processing and utilization of old batteries. The method adopted by Batllek is to grind the old batteries and send them to the furnace for heating. At this time, the volatilized mercury can be extracted and the temperature is higher. When zinc also evaporates, it is also a precious metal. Iron and manganese are fused to become a ferromanganese alloy required for steelmaking. The plant can process 2000 tons of waste batteries a year and obtain 780 tons of manganese-iron alloy, 400 tons of zinc alloy and 3 tons of mercury. The other factory extracts iron directly from batteries and sells metal mixtures such as manganese oxide, zinc oxide, copper oxide, and nickel oxide directly as metal scraps. However, the heat treatment method is more expensive, and Switzerland also stipulates that every battery purchaser shall be charged a small amount of special fee for waste battery processing. (2) Wet treatment A wet treatment device is being built in the suburbs of Magdeburg, where all types of batteries are dissolved in sulfuric acid except for batteries, and then various metals are extracted from the solution with the help of ionic resins. The raw material is purer than the heat treatment method, so the price is higher on the market, and 95% of the various substances contained in the battery can be extracted. Wet processing can save the sorting link (because sorting is manual operation, it will increase the cost). The Magdeburg facility has an annual processing capacity of 7,500 tons. Although its cost is slightly higher than that of landfill, the precious raw materials will not be discarded and will not pollute the environment. (3) Vacuum heat treatment method The vacuum heat treatment method developed by the German Alte Company is cheaper. However, it is necessary to sort out the nickel-cadmium batteries from the waste batteries. The waste batteries are heated in a vacuum, and the mercury is quickly evaporated. Recover, then grind the remaining raw materials, extract metallic iron with a magnet, and extract nickel and manganese from the remaining powder. The cost of processing one ton of waste batteries is less than 1,500 marks. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What should be paid attention to when charging lithium-ion batteries