Graphitization technology of Acheson furnace for producing anode materials

Abstract

The invention provides a graphitization technology of an Acheson furnace for producing anode materials, and belongs to the technical field of anode material preparation. The graphitization technology comprises the steps that a furnace base is paved with quartz sand and carbon in sequence, the upper portion of the carbon black is paved with petroleum coke, tamping is conducted, and the upper portion of the petroleum coke is pared with calcined coke; the anode materials are put in crucibles and arranged layer by layer till the requirement of a designed furnace core is met, the upper portion and the periphery of each crucible are paved with and filled with the calcined coke, the upper portion of the calcined coke and the space between a forming plate and a steel plate are paved with and filled with the petroleum coke, and the upper portion of the forming plate and the space between each furnace wall plate and the forming plate are paved with and filled with thermal insulation materials, after furnace charging is completed, a gas-collecting hood is additionally installed, energizing is conducted to raise temperature, and cooling and product discharging are conducted. By adopting the graphitization technology to produce the anode materials of lithium batteries, the graphitization degree of the products is higher, power consumption for obtaining each ton of the anode materials is reduced, the yield of carburant is doubled, cooling of a furnace body is rapid, product discharge is rapid, and the environmental protecting and energy saving effects are significant.

Description

technical field [0001] The invention belongs to the technical field of negative electrode material preparation, and in particular relates to a graphitization process for producing the negative electrode material Acheson furnace. Background technique [0002] Lithium-ion battery is a representative of contemporary high-performance batteries, a green new energy product, widely used in information, telecommunications and power industries. With the development of international productivity, the rapid consumption of oil resources, and the pollution caused by the exhaust of a large number of fuel vehicles in cities, the environmental problems have become increasingly prominent. In order to truly solve the exhaust pollution of automobiles, the voice of developing zero-emission electric vehicles is getting louder and louder. The key to the performance of electric vehicles lies in the battery, and lithium-ion batteries are the ideal power source for electric vehicles. Lithium-ion ba...

AI Technical Summary

Problems solved by technology

However, there are still many problems in the Acheson graphitization process. At present, most of the graphitization furnaces simply use calcined coke as the resistance material, but the calcined coke cannot be in contact with water, so the cooling method is limited. Natural cooling can only be used to reduce the temperature. Slow, which prolongs the time of release from the furnace; secondly, the calcined coke has the problems of large loss and pollution, and the operation process is not easy to control; and after high temperature treatment, the quality of the by-product of the calcined coke - carburant is low

In actual production, the amount of calcined coke only reaches about 1 / 3 of the volume of the furnace body, resulting in low output and unstable quality of auxiliary materials obtained from a single furnace

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