Method and apparatus for breaking waste lithium ionic battery by using liquid nitrogen low temperature technique
A lithium-ion battery and low-temperature technology, which is applied in the field of waste lithium-ion battery treatment, can solve the problems of poor quality of recycled products, backward production technology, low economic benefits, etc., and achieves low energy consumption, elimination of battery activity, and good quality. Effect
Inactive Publication Date: 2010-06-02
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
To recycle waste lithium-ion batteries, the first step is to break the shell of waste lithium-ion batteries. At present, domestic manufacturers mainly use fire treatment or manual dismantling. These methods have backward production technology, high energy consumption, and poor quality of recycled products. Serious environmental pollution and low economic benefits
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[0010] A method for crushing waste lithium-ion batteries using liquid nitrogen low-temperature technology is implemented according to the following steps: 1) sorting waste lithium-ion batteries at normal temperature to remove impurities; 2) immersing and cooling waste lithium-ion batteries in liquid nitrogen for 10~ 15min; 3) Crushing the cooled waste lithium-ion battery into a size of 1 to 2 square centimeters in the crushing equipment; 4) Sorting different materials using screening and sorting equipment. A device for crushing waste lithium-ion batteries using liquid nitrogen low-temperature technology, consisting of a sorter, a pre-cooling tank, an immersion cooler, a crawler conveyor, a closed crusher, a heat exchanger, a screw conveyor, a filter, a condenser and The liquid nitrogen storage tank is composed of liquid nitrogen storage tanks and connected by pipelines; the process is to sort the waste lithium-ion batteries at room temperature, enter the pre-cooling tank for pr...
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A method for crushing waste lithium ion batteries by liquid nitrogen low-temperature technology is characterized by comprising the following steps: the waste lithium ion batteries are sorted at normaltemperature, soaked in liquid nitrogen for 10-15 minutes for cooling, crushed into blocks with the area of 1-2cm<2> in a crusher at a low temperature, and materials are sorted by a screening and sorting device. The device consists of a sorting machine, a pre-cooling tank, a soaking cooler, a crawler conveyor, a crusher, a heat exchanger, a screw conveyor, a filter, a condenser and a liquid nitrogen storage tank which are connected by pipelines. The method has the following advantages of: the prevention of batteries from explosion and the limit of harmful substances to volatilize and cause pollution to the environment owing to the easily broken shells, no degradation but heat accumulation of the lithium ion batteries at low temperature; advanced production technology and low energy consumption; the remained original physical properties of the crushed materials, and good quality of regenerative products; and easy implementation and good economic benefit.
Description
(1) Technical field [0001] The invention relates to a treatment method for a waste lithium ion battery, in particular to a method and a device for crushing a waste lithium ion battery using liquid nitrogen low temperature technology. (2) Background technology [0002] With the rapid development of the national economy, the number of scrapped lithium-ion batteries in the country is increasing every year. How to deal with these spent lithium-ion batteries is a big problem that needs to be solved urgently. This is not only related to environmental protection, but also related to the recycling of natural resources. . To recycle waste lithium-ion batteries, the first step is to break the shell of waste lithium-ion batteries. At present, domestic manufacturers mainly use fire treatment or manual dismantling. These methods have backward production technology, high energy consumption, and poor quality of recycled products. Environmental pollution is serious and economic benefit is ...
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IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 崔宏祥王志远万钧赵乾
Owner TIANJIN UNIVERSITY OF TECHNOLOGY