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A boat-less carbonization process for negative electrode materials

A negative electrode material and negative electrode technology, which is applied in the field of negative electrode material boat-less carbonization process, can solve the problems of high consumption and high carbonization process cost

Active Publication Date: 2020-05-12
株洲弗拉德科技有限公司
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Problems solved by technology

[0003] Obviously, the material boat and push plate are auxiliary tools for heating and cooling together with the material, which consume a lot of electric energy in the carbonization process, resulting in a significantly high cost of the carbonization process, and the power consumption is as high as 5000kwh per ton of negative electrode material

Method used

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Embodiment Construction

[0014] A boat-free carbonization process for negative electrode materials, characterized in that the boat-free carbonization process for negative electrode materials does not use materials commonly used in the carbonization process of traditional horizontal push plate tunnel kiln continuous furnaces in the carbonization process of negative electrode powder raw materials Instead, the vertical induction heating continuous carbonization furnace is used to directly place the negative electrode powder raw material in the furnace for continuous carbonization treatment. The carbonization process is completed by the following raw materials and steps: A. The raw material is graphite negative electrode powder Raw materials, the graphite negative electrode powder raw materials are divided into artificial graphite negative electrode powder coated modified raw materials and natural graphite negative electrode powder coated modified raw materials:

[0015] ①Artificial graphite negative elect...

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Abstract

The invention relates to a boat-less carbonization process for negative electrode materials. In the carbonization process of negative electrode powder raw materials, the material boats and push plates commonly used in the carbonization process of a traditional horizontal push-plate tunnel kiln continuous furnace are not used. A vertical induction heating continuous carbonization furnace is used to directly place the negative electrode powder raw material in the furnace for continuous carbonization treatment. The carbonization process is carried out in a vertical induction heating continuous carbonization furnace to realize continuous carbonization production without boats. This carbonization process saves the material boat and push plate, and the temperature, time, and material flow speed are controllable and adjustable. Stable quality, reliable work, high efficiency and low cost.

Description

technical field [0001] The invention relates to a boatless carbonization process for negative electrode materials, which is a continuous carbonization process for lithium ion battery negative electrode materials, in particular, a material container that is generally used in the carbonization process that does not use an intermittent furnace, nor does it use a continuous furnace carbonization process. A boat-free carbonization process for lithium-ion battery anode materials commonly used in boats. Background technique [0002] In the lithium-ion battery anode material industry, most of them adopt horizontal push-plate tunnel kilns for carbonization production, that is, the boat containing negative electrode powder raw materials is placed on the push plate, and enters the furnace from one end of the carbonization furnace, and passes through the push plate. Drive the boat to move, pass through the preheating zone, carbonization heating zone, and cooling zone in sequence, and co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/1393H01M10/0525H01M4/583
CPCH01M4/1393H01M4/583H01M10/0525Y02E60/10
Inventor 言伟雄
Owner 株洲弗拉德科技有限公司
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