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Graphite crucible for producing negative electrode material of lithium battery and preparation process of graphite crucible
The invention discloses a graphite crucible for producing a lithium battery negative electrode material and a preparation process of the graphite crucible, belongs to the technical field of preparation of graphite crucibles, and solves the technical problems of low strength, poor performance, low yield and the like of the existing graphite crucible. According to the technical scheme, the graphite crucible for producing the negative electrode material of the lithium battery is prepared from the following raw materials in parts by weight: 49 parts of needle coke, 28 parts of calcined coke powder, 22.7 parts of an asphalt binder and 0.3 part of a stearic acid additive. According to the preparation method, the preparation processes of intermediate crushing and burdening, mixing and kneading, profiling, primary roasting, dipping, secondary roasting, graphitizing and machining are adopted, and the process parameters are selected, so that the product compactness is increased, the porosity of the product is reduced, the oxidation resistance is improved, the mechanical strength and the air infiltration capacity are greatly improved, the performance of the graphite crucible is improved, and the service life of the graphite crucible is prolonged. And the use frequency of the product is improved by more than 50%.
一种用于锂电池负极材料生产用石墨坩埚及其制备工艺，属于石墨坩埚制备技术领域，解决了现有石墨坩埚强度低、性能差和成品率等技术问题。本发明的技术方案为：一种用于锂电池负极材料生产用石墨坩埚，由下列原料配制而成：重量份为49份的针状焦、重量份为28份的煅烧焦粉料、重量份为22.7份的沥青粘结剂和重量份为0.3份的硬脂酸添加剂；本发明采用中碎配料、混捏、压型、一次焙烧、浸渍、二次焙烧、石墨化、机加工的制备工艺，通过工艺参数的选取，本工艺的产品密实度增加，降低了制品的孔隙率提高抗氧化能力，机械强度和对空气的渗透能力大大提高，增加了石墨坩埚的性能，产品的使用次数提高50％以上。
Graphite crucible for producing negative electrode material of lithium battery and preparation process of graphite crucible
The invention discloses a graphite crucible for producing a lithium battery negative electrode material and a preparation process of the graphite crucible, belongs to the technical field of preparation of graphite crucibles, and solves the technical problems of low strength, poor performance, low yield and the like of the existing graphite crucible. According to the technical scheme, the graphite crucible for producing the negative electrode material of the lithium battery is prepared from the following raw materials in parts by weight: 49 parts of needle coke, 28 parts of calcined coke powder, 22.7 parts of an asphalt binder and 0.3 part of a stearic acid additive. According to the preparation method, the preparation processes of intermediate crushing and burdening, mixing and kneading, profiling, primary roasting, dipping, secondary roasting, graphitizing and machining are adopted, and the process parameters are selected, so that the product compactness is increased, the porosity of the product is reduced, the oxidation resistance is improved, the mechanical strength and the air infiltration capacity are greatly improved, the performance of the graphite crucible is improved, and the service life of the graphite crucible is prolonged. And the use frequency of the product is improved by more than 50%.
一种用于锂电池负极材料生产用石墨坩埚及其制备工艺，属于石墨坩埚制备技术领域，解决了现有石墨坩埚强度低、性能差和成品率等技术问题。本发明的技术方案为：一种用于锂电池负极材料生产用石墨坩埚，由下列原料配制而成：重量份为49份的针状焦、重量份为28份的煅烧焦粉料、重量份为22.7份的沥青粘结剂和重量份为0.3份的硬脂酸添加剂；本发明采用中碎配料、混捏、压型、一次焙烧、浸渍、二次焙烧、石墨化、机加工的制备工艺，通过工艺参数的选取，本工艺的产品密实度增加，降低了制品的孔隙率提高抗氧化能力，机械强度和对空气的渗透能力大大提高，增加了石墨坩埚的性能，产品的使用次数提高50％以上。
Graphite crucible for producing negative electrode material of lithium battery and preparation process of graphite crucible
一种用于锂电池负极材料生产用石墨坩埚及其制备工艺
ZHANG GUOHUI (Autor:in)
01.11.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Graphite crucible repairing material and graphite crucible repairing method
| Europäisches Patentamt | 2024
| Engineering Index Backfile | 1935