They are well treated. Recycling ofused lithium-ion batteriesis divided into two processes: the wet method and the fire method. From an industrial point of view, the fire method is relatively. mature and widely used, such as Umicore's CaO-SiO2-Al 2O3 shaft furnace melting process.
However, the current lithium battery processing process that is generally favored by the industry is the wet process, which requires mechanical methods to break down the battery case and then a leaching process to dissolve precious metal elements. , then precipitation, extraction and other methods to recover the metals.
Note on discarded lithium batteries:
1. In accordance with current national regulations, the production and sale of mercury oxide batteries is currently prohibited, as well as the production and sale of batterieszinc, manganese and Zinc-manganese products with mercury content greater than 0.025% of the battery grade are currently prohibited.
2. Effective January 1, 2005, production of zinc-manganese alkaline batteries containing mercury content greater than 0.0001% will be discontinued. Therefore, qualified primary batteries currently produced and sold are not included in hazardous waste management due to relatively low environmental risks.