Method of manufacturing needle coke with reduced puffing ratio and method of manufacturing artificial graphite electrode rod using the same

KR103002427B1Active Publication Date: 2026-08-11POSCO MC MATERIALS CO LTD
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Patent Information

Application Number
KR1020240020987
Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-02-14
Publication Date
2026-08-11
Estimated Expiration
2044-02-14

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Abstract

The present invention provides a method for manufacturing needle coke for electrode rods, comprising: a delayed carbonization step for forming green coke; i) a pre-calcination step of heat-treating the green coke at a temperature of 800°C to 1000°C; ii) a cooling step of cooling the pre-calcined green coke to room temperature; and iii) a calcination step of forming calcined coke through a high-temperature calcination step of heat-treating the cooled green coke at 1200°C to 1500°C. According to the above method, it is possible to manufacture needle coke of high stability with significantly reduced abnormal expansion phenomena.
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Citation Information

Patent Citations

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