Low-temperature environment-friendly carbonization device for recycling waste lithium ion batteries

Abstract

The invention provides a low-temperature environment-friendly carbonization device for recycling waste lithium ion batteries, and relates to the field of solid waste recycling. The low-temperature environment-friendly carbonization device for recycling waste lithium ion batteries comprises a base. The upper surface of the base is fixedly connected with a heating furnace body. One side of the heating furnace body is fixedly connected with a feeding sealing box. A furnace tube inner screw is fixedly connected to the end, close to the feeding sealing box, in the heating furnace body. A spiral check ring is arranged at the end, away from the feeding sealing box, of the furnace tube inner screw. A rotary roasting body is arranged in the heating furnace body and located on one side of the furnace tube inner screw. Through reasonable structural design, the device is higher in heat energy utilization rate and more accurate in temperature control. A material inlet and a material outlet adopt amaterial accumulation sealing mode, so that the oxygen content in the equipment can be effectively controlled, the oxidation degree of copper and aluminum is reduced, and the recovery rate of valuablesubstances is further greatly improved. Useless organic substances are subjected to carbonization treatment, and harmful substances are reduced.

Description

technical field [0001] The invention relates to the technical field of solid waste recycling, in particular to a low-temperature environment-friendly carbonization device for recycling waste lithium-ion batteries. Background technique [0002] Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Lithium metal batteries, the fifth generation of rechargeable batteries, were born in 1996. Safety, specific capacity, self-discharge rate and performance-price ratio are superior to lithium-ion batteries. Due to its own high technical requirements, only a few companies in a few countries are producing such lithium metal batteries. [0003] At present, pyrolysis technology is widely used in the field of recycling, but it has disadvantages such as low heat utilization rate, serious copper and aluminum oxidation, and low black powder shedding efficienc...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a low-temperature environment-friendly carbonization device for recycling waste lithium-ion batteries, which solves the shortcomings of low thermal energy utilization rate, serious oxidation of copper and aluminum, and low black powder shedding efficiency when processing lithium batteries. The oxidation of copper and aluminum will greatly reduce the recovery rate of useful value; at the same time, due to insufficient control of temperature and oxygen content, useless organic substances will produce a large number of harmful substances.

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