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METHOD FOR MANUFACTURING HIGH-DENSITY ARTIFICIAL GRAPHITE ELECTRODE
Provided is a method for manufacturing a high-density artificial graphite electrode without substantially changing the particle size or proportion of needle coke to be used, increasing the amount of binder pitch, or extrusion molding with a high molding pressure. The method for manufacturing an artificial graphite electrode includes the steps of kneading binder pitch into needle coke, extrusion molding the same, and then firing and graphitizing the same, wherein at least a portion of the ground needle coke to be used is subjected to a coke-shape alteration process such that the ratio of envelope peripheral length/peripheral length is 1% or more greater than the value prior to the alteration. The envelope peripheral length is the length of a perimeter of the tops of projections of the ground needle coke connected by the shortest distances therebetween, and the peripheral length is the length of a perimeter of a particle.
本发明提供一种高密度人造石墨电极的制造方法，其不大幅改变所使用的针状焦炭的粒度、比例，或者不增加粘结剂沥青的量，或者不以高成型压力进行挤出成型。上述高密度人造石墨电极的制造方法是向针状焦炭混炼粘结剂沥青后，进行挤出成型，接着，通过煅烧和石墨化处理，由此制造人造石墨电极的方法，使用如下针状焦炭：通过对所使用的粉碎针状焦炭中至少一部分的粉碎针状焦炭进行焦炭形状的变更处理，由此使包络周长/周长的比与变更前的数值相比增大1％以上。这里，包络周长为将粉碎的针状焦炭的凸部的顶点以最短的距离连接时的一周的长度，周长为粒子的一周的长度。
METHOD FOR MANUFACTURING HIGH-DENSITY ARTIFICIAL GRAPHITE ELECTRODE
Provided is a method for manufacturing a high-density artificial graphite electrode without substantially changing the particle size or proportion of needle coke to be used, increasing the amount of binder pitch, or extrusion molding with a high molding pressure. The method for manufacturing an artificial graphite electrode includes the steps of kneading binder pitch into needle coke, extrusion molding the same, and then firing and graphitizing the same, wherein at least a portion of the ground needle coke to be used is subjected to a coke-shape alteration process such that the ratio of envelope peripheral length/peripheral length is 1% or more greater than the value prior to the alteration. The envelope peripheral length is the length of a perimeter of the tops of projections of the ground needle coke connected by the shortest distances therebetween, and the peripheral length is the length of a perimeter of a particle.
本发明提供一种高密度人造石墨电极的制造方法，其不大幅改变所使用的针状焦炭的粒度、比例，或者不增加粘结剂沥青的量，或者不以高成型压力进行挤出成型。上述高密度人造石墨电极的制造方法是向针状焦炭混炼粘结剂沥青后，进行挤出成型，接着，通过煅烧和石墨化处理，由此制造人造石墨电极的方法，使用如下针状焦炭：通过对所使用的粉碎针状焦炭中至少一部分的粉碎针状焦炭进行焦炭形状的变更处理，由此使包络周长/周长的比与变更前的数值相比增大1％以上。这里，包络周长为将粉碎的针状焦炭的凸部的顶点以最短的距离连接时的一周的长度，周长为粒子的一周的长度。
METHOD FOR MANUFACTURING HIGH-DENSITY ARTIFICIAL GRAPHITE ELECTRODE
高密度人造石墨电极的制造方法
KAWANO YOICHI (author)
2021-11-16
Patent
Electronic Resource
Chinese
METHOD FOR MANUFACTURING HIGH-DENSITY ARTIFICIAL GRAPHITE ELECTRODE
| European Patent Office | 2023
METHOD FOR MANUFACTURING HIGH-DENSITY ARTIFICIAL GRAPHITE ELECTRODE
| European Patent Office | 2020