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Comparison of domestic and foreign 3500mah 18650 battery recycling technology routes
Comparison of domestic and foreign 3500mah 18650 battery recycling technology routes. Due to differences in recycling costs, processing technologies, and recycling channels, there are differences in the recycling status of power batteries at home and abroad. The demand for power lithium batteries will be accompanied by industry opportunities for lithium battery recycling and echelon utilization, and the development of power lithium battery recycling and echelon utilization industries , is both necessary and economical.
Comparison of domestic and foreign 3500mah 18650 battery recycling technology routes
In terms of 3500mah 18650 battery recycling technology, foreign companies such as Toxco, AEA Technology, Inmetco, SNAM, Toshiba's TERUME, and Sumitomo Metal Mining Company can recycle lithium batteries on a large scale. Among them, Toxco can process lithium batteries of different types and different chemical properties; It started late in China. At present, three companies, GEM, Bangpu (acquired by CATL) and Ganzhou Haopeng, collectively account for more than 90% of the market.
In terms of recycling process, Toxco uses a wet process to first crush and recycle waste lithium-ion batteries at a low temperature of -198°C in liquid nitrogen. Inmetco uses a fire process to process it at high temperatures in an electric arc furnace. Germany generally uses a combination of fire and wet processes. Process, materials are recovered at different processing stages through the process flow of "pretreatment-vacuum heat treatment-mechanical treatment-blocking-fire method-wet method"; domestic GEM and Bangpu generally use wet process as the main method, and fire process combined for recycling.
It is expected that by 2020, the industry will realize the transformation of dismantling technology from manual to automated, improve disassembly efficiency, achieve copper and aluminum sorting efficiency of more than 85%, nickel, cobalt and manganese recovery rate of more than 98%, and lithium resource recovery rate of more than 60% , and make breakthroughs in graphite recycling and resource utilization technology.
Overseas power recovery systems are more complete and each has its own advantages. Since developed countries such as Europe, the United States, and Japan started recycling lead-acid batteries and consumer lithium batteries earlier, the recycling systems established have achieved good results, forming producer responsibility in which 3500mah 18650 battery manufacturers bear the main responsibility for battery recycling. The derivative mechanism and supporting policy system are relatively complete.
Under the mechanism where battery companies assume primary responsibility, there are three main ways to build recycling channels: first, battery manufacturers use sales channels to build "reverse logistics" recycling channels; second, build recycling channels by co-building industry associations and alliances; third, It is a specific third-party recycling company that builds its own recycling channels.
Domestic battery industry chain companies have taken precautions and begun to extend their layout downwards. In the future, upstream and downstream cooperation will continue to strengthen. Taking into account the life cycle of power batteries, the current direct scrap volume of domestic lithium power batteries has not yet reached an explosive period. The main sources of waste batteries are still production waste from battery factories and consumer electronic lithium batteries. From the perspective of layout entities, upstream and downstream companies in the industry chain such as resources, materials, and batteries and new energy vehicles are actively developing recycling layouts, and third-party resource recycling companies are also involved.
The dangers of discarded power batteries
Used power batteries pose potential threats to the environment and human health. Most used batteries are not disposed of effectively, which will pose potential threats to the natural environment and human health.
Although power batteries do not contain toxic heavy metal elements such as mercury, cadmium, and lead, they can also cause environmental pollution. For example, once its electrode materials enter the environment, the metal ions in the positive electrode of the battery, the carbon dust in the negative electrode, and the strong alkali and heavy metal ions in the electrolyte may cause serious environmental pollution, including increasing the pH value of the soil. Improper treatment may cause Toxic gas.
In addition, the metals and electrolytes contained in power batteries can harm human health. For example, cobalt may cause intestinal disorders, deafness, myocardial ischemia and other symptoms.
Summary: It can be seen that these recycling processes for used power lithium batteries have their own advantages and disadvantages. The construction of a 3500mah 18650 battery recycling system has dual significance of economy and environmental protection. The scrapping of power batteries is about to come, and the market scale will reach tens of billions.
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