Microwave-assisted dynamic continuous calcining device and method for lithium-ion battery material

Abstract

The invention relates to microwave-assisted dynamic continuous calcining device and method for a lithium-ion battery material. The device comprises a rotary kiln body, a transmission device and a power device, wherein the power device is connected with the rotary kiln body through the transmission device; the rotary kiln body comprises a rotary kiln tube body; independent microwave emitters are continuously arranged on a rotary kiln body shell; waveguide tubes are connected onto the microwave emitters and are connected with the rotary kiln tube body; the temperatures of different temperature areas of the rotary kiln body are controlled through adjusting microwave powers of the microwave emitters; a discharging device is arranged on a kiln head of the rotary kiln body; a feeder is arrangedon a kiln tail of the rotary kiln body; an air supply gun is arranged on the kiln head of the rotary kiln body and communicates with the rotary kiln tube body; an air discharge flue is arranged on thekiln tail of the rotary kiln body; and a sintering atmosphere in the rotary kiln body is controlled through the air supply gun on the kiln head. The microwave-assisted dynamic continuous calcining device and the method for the lithium-ion battery material provided by the invention have high heat utilization ratio, and is particularly good for preparing a nanometer material; continuous feeding anddischarging can be realized, so that the preparation efficiency of the lithium-ion battery material is greatly improved; and the generated greenhouse gas is less so as to have low effect on the environment.

Description

technical field [0001] The invention relates to the technical field of microwave calcination equipment, in particular to microwave-assisted dynamic continuous calcination equipment and a calcination method for lithium-ion battery materials. Background technique [0002] Microwave is an efficient and environmentally friendly new type of heating energy. It has the characteristics of selective heating, so it also exerts its excellent characteristics in powder calcination processing. Compared with the conventional thermal radiation heating method, the microwave heating method has many advantages, such as simple and rapid synthesis of materials; in addition, the microwave method is particularly effective for controlling large-scale synthesis because it can minimize the influence of thermal gradients. However, the currently used microwave equipment is basically intermittent operation, which has poor repeatability and cannot be used for continuous large-scale production. [0003] ...

AI Technical Summary

Problems solved by technology

[0004] At present, the application of rotary kiln in the field of new materials such as lithium-ion battery materials is almost zero, and the heating method of traditional rotary kiln basically adopts the combustion of fossil fuels: natural gas, coal or mixed fuel, and the heat utilization rate is low, which produces a large amount of greenhouse gases. Etc., great impact on the environment

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