ARTIFICIAL GRAPHITE ANODE MATERIAL INOCULATED BY HIGH AND LOW-TEMPERATURE MOLTEN IRON, AND MANUFACTURING APPARATUS THEREFOR - SHENZHEN GANGYU CARBON CRYSTAL TECH CO LTD

Title:

ARTIFICIAL GRAPHITE ANODE MATERIAL INOCULATED BY HIGH AND LOW-TEMPERATURE MOLTEN IRON, AND MANUFACTURING APPARATUS THEREFOR

Document Type and Number:

WIPO Patent Application WO/2023/231440

Kind Code:

A1

Abstract:

Provided in the present invention are an economical and environment-friendly artificial graphite anode material inoculated by high and low-temperature molten iron and having high first efficiency and a large capacity per gram, and a manufacturing apparatus therefor. High-temperature molten iron has high carbon saturation solubility at 1750-2150°C and has the capability of selectively dissolving amorphous carbon in a graphite precursor and high-activity carbon on a surface; liquid/solid mixtures are cooled together to a low-temperature range of 1300-1650°C; low-temperature molten iron has low carbon saturation solubility; supersaturated carbon precipitates from the molten iron, and epitaxial crystallization is achieved on the surface of fine graphite precursor power to form coated core-shell structured artificial graphite powder; main/auxiliary graphite pistons are then moved upwards from the liquid surface of the molten iron; the artificial graphite powder naturally floats above the liquid surface of the molten iron; the power is suctioned out by means of negative pressure; after particle sorting and demagnetization, an artificial graphite anode material inoculated by high and low-temperature molten iron is obtained; upon feeding, graphite pistons are used to adsorb, under negative pressure, fine graphite precursor powder packed in a steel barrel, and a stirring function is achieved by means of relative movement between the main/auxiliary graphite pistons.

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Inventors:

LI XIN (CN)
JI XUEWEN (CN)
LI SHUO (CN)

Application Number:

PCT/CN2023/074431

Publication Date:

December 07, 2023

Filing Date:

February 03, 2023

Export Citation:

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Assignee:

SHENZHEN GANGYU CARBON CRYSTAL TECH CO LTD (CN)

International Classes:

C01B32/16; C01B32/17; H01M4/587; H01M10/0525

Foreign References:

CN115124028A	2022-09-30
CN108545722A	2018-09-18
CN103597645A	2014-02-19
JPS63210007A	1988-08-31
JPS577807A	1982-01-16
KR20150061214A	2015-06-04

Attorney, Agent or Firm:

BEIJING ZHUANYING PATENT AGENCY CO., LTD. (CN)

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