Lithium ion battery recycling technical analysis

Source: 2020 - 04 - 10 hits, which were in time power lithium ion battery recycling process at present, lithium ion battery recycling and processing technology is divided into three types: dry and wet method and biological method. Dry process is isolated from the lithium ion battery reduction roasting cobalt, aluminum, cobalt leaching isolated and acetylene black. Drying process is relatively simple, but high energy consumption. Wet process technology is a separation and damage the battery, the use of the machine of waste battery acid solution leaching of the valuable part of according to the properties of different metal ions, the use of the extractant, the filtrate of different metal precipitant separated, and recovery technology. Wet recovery technology is to create conditions to control the stability of the material in the solution, metal recycling, so the process energy consumption is large, and the process is long, the equipment requirement is high, the cost is high, the resource recovery rate is low. Biological method is useful in using microbial system components into soluble compounds, selectively dissolved it out and get solution containing metal, realizes the target components and the separation of impurity components, the final recovery of useful metal process. Compared with the battery recycling technology, biological leaching with infrastructure less investment, low running cost, less environmental pollution, etc. However, this is a relatively new subject, there are many problems need to be solved, such as the choice of strains and culture, the control of leaching conditions, the mechanism of biological leaching, etc. Other new technologies, such as the anode ( LiCoO2) By electrochemical reduction technology will Co3 + reduction of Co2 +, lithium was released from the solid structure of LiCoO2, avoids the introduction of other chemicals, caused the complexity of subsequent processing. By the method of ion sieve separation recycling lithium-ion batteries. Lithium ion battery recycling technology analysis compared with other batteries, lithium-ion batteries, the commercialization of the relatively late, so countries comprehensive recovery technology of lithium ion battery research started relatively late. At the same time, because the lithium ion battery compared with other battery has the advantages of low pollution, high cost, its recovery process is also in the early stages of research. The widespread use of lithium ion battery and lithium ion batteries in the huge economic efficiency, professional battery recycling and processing company established abroad, such as TERUME, Toshiba's subsidiary, INETCO in the United States, the Arkansas education association in the UK and coy look co. , LTD in China, the lithium ion battery recycling technology started relatively late, and most of the recycling technology is still at the experimental stage, no large-scale industrial production.