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A method for reducing TOC content in lithium battery raw materials

A raw material, lithium battery technology, applied in separation methods, chemical instruments and methods, loose filter material filters, etc., can solve the problems affecting the performance of lithium batteries, high impurity content, reduce TOC content and other impurities, reduce TOC content , the effect of enhancing the filtering effect

Active Publication Date: 2020-08-04
JINGMEN GEM NEW MATERIAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention provides a method for reducing the TOC content in lithium battery raw materials that overcomes the above problems or at least partially solves the above problems, so as to solve the technical problem that the high content of TOC or other solid particulate impurities in lithium battery raw materials affects the performance of lithium batteries

Method used

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  • A method for reducing TOC content in lithium battery raw materials
  • A method for reducing TOC content in lithium battery raw materials
  • A method for reducing TOC content in lithium battery raw materials

Examples

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Effect test

Embodiment 1

[0069] A method for reducing the TOC content in lithium battery raw materials. The slurry is firstly treated by a microcrystalline filtration subsystem, and then sequentially processed by an activated carbon filtration subsystem, a primary ultrafiltration subsystem, and a secondary ultrafiltration subsystem.

[0070] Among them, the effective use volume of the microcrystalline filtration subsystem is 20m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 30m 3 / h, the operating temperature is 30°C, and polyvinyl chloride is used, and the particle size is 50 μm; the effective use volume of the activated carbon filtration subsystem is 20m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 30m 3 / h, the operating temperature is 30°C, and its average pore size is 50μm; the effective use area of ​​the primary ultrafiltration subsystem is 20m 2 , the pore size of the filter element is 0.5μm, the operating temperat...

Embodiment 2

[0075] A method for reducing the TOC content in lithium battery raw materials. The slurry is firstly treated by a microcrystalline filtration subsystem, and then sequentially processed by an activated carbon filtration subsystem, a primary ultrafiltration subsystem, and a secondary ultrafiltration subsystem.

[0076] Among them, the effective use volume of the microcrystalline filtration subsystem is 20m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 20m 3 / h, the operating temperature is 30°C, and polyvinyl chloride is used, and the particle size is 50 μm; the effective use volume of the activated carbon filtration subsystem is 20m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 20m 3 / h, the operating temperature is 30°C, and its average pore size is 50μm; the effective use area of ​​the primary ultrafiltration subsystem is 20m 2 , the pore size of the filter element is 0.5μm, the operating temperat...

Embodiment 3

[0080] A method for reducing the TOC content in lithium battery raw materials. The slurry is firstly treated by a microcrystalline filtration subsystem, and then sequentially processed by an activated carbon filtration subsystem, a primary ultrafiltration subsystem, and a secondary ultrafiltration subsystem.

[0081] Among them, the effective use volume of the microcrystalline filtration subsystem is 15m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 30m 3 / h, the operating temperature is 30°C, and polyvinyl chloride is used, and the particle size is 50 μm; the effective use volume of the activated carbon filtration subsystem is 30m 3 , the flow rate of the slurry through the microcrystalline filtration subsystem is 20m 3 / h, the operating temperature is 30°C, and its average pore size is 50μm; the effective use area of ​​the primary ultrafiltration subsystem is 30m 2 , the pore size of the filter element is 0.5μm, and the operating temp...

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Abstract

A method provided by the present invention to reduce the TOC content in the lithium battery raw material, which will be filtered by combined filtering system and ultrafiltration system by the slurry of the lithium battery raw material; wherein the combined filtration system uses microcrystalline and activated carbon,The method of filtering is used to filter the organic matter and solid suspension in the slurry; the ultrafiltration system is used to filter the solid suspension of the slurry.Compared with the existing technologies, the lithium battery raw materials prepared by wet metallurgy are directly applied to the preparation of lithium batteries. A method for reducing the TOC content in the lithium battery raw material in the invention can effectively reduce the TOC content in the lithium battery raw materials to improveLithium battery performance.

Description

technical field [0001] The invention relates to lithium battery production technology, and more specifically, to a method for reducing TOC content in lithium battery raw materials. Background technique [0002] Lithium battery mainly refers to a type of battery that uses lithium element as the main active material in the electrode material. Lithium batteries are light and durable, have relatively little pollution to the environment, and have excellent charge and discharge performance, and are widely used in the current battery field. [0003] In recent years, on the basis of the lithium element as the active material, a material composed of more than two elements has appeared as a battery active material, and among them, the research and application of the ternary material are better. For example, lithium, nickel, cobalt, manganese and other elements are combined into nickel-cobalt lithium manganate (chemical formula: Li(NiCoMn)O 2 ) of the ternary material. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/00B01D15/08B01D24/00B01D61/14
CPCB01D15/08B01D24/007B01D36/00B01D61/146
Inventor 许开华吕志乐绪清杨特
Owner JINGMEN GEM NEW MATERIAL
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