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Novel isotropic nuclear-grade graphite material and preparation method thereof
The invention discloses a novel isotropic nuclear-grade graphite material and a preparation method thereof. The novel isotropic nuclear-grade graphite material is prepared by using spheroidized natural crystalline flake graphite as an aggregate, and the proportion of the spheroidized natural crystalline flake graphite in the aggregate is 50-100 wt%. The preparation method comprises the following steps: spheroidizing treatment, purification, mixing kneading, secondary crushing and screening, forming, primary roasting, dipping, secondary roasting, and graphitizing treatment. The isotropic nuclear-grade graphite material is prepared by spheroidizing natural crystalline flake graphite, has the characteristics of high density, high thermal conductivity, low expansion coefficient and excellent isotropy, and shows good application prospects in the fields of nuclear energy, thermal management, machinery, chemical engineering and the like.
本发明公开了一种新型各向同性核级石墨材料及其制备方法，以含有球形化的天然鳞片石墨为骨料制得，骨料中的球形化的天然鳞片石墨的占比为50～100wt％，其具体制备过程包括：球形化处理、提纯、混捏、二次粉碎及筛分、成型、一次焙烧、浸渍、二次焙烧和石墨化处理。本发明通过将天然鳞片石墨进行球形化处理后制得各向同性核级石墨材料，具有密度高、热导率高、膨胀系数低、各向同性度优异的特点，在核能、热管理、机械、化工等领域存在较大应用前景。
Novel isotropic nuclear-grade graphite material and preparation method thereof
The invention discloses a novel isotropic nuclear-grade graphite material and a preparation method thereof. The novel isotropic nuclear-grade graphite material is prepared by using spheroidized natural crystalline flake graphite as an aggregate, and the proportion of the spheroidized natural crystalline flake graphite in the aggregate is 50-100 wt%. The preparation method comprises the following steps: spheroidizing treatment, purification, mixing kneading, secondary crushing and screening, forming, primary roasting, dipping, secondary roasting, and graphitizing treatment. The isotropic nuclear-grade graphite material is prepared by spheroidizing natural crystalline flake graphite, has the characteristics of high density, high thermal conductivity, low expansion coefficient and excellent isotropy, and shows good application prospects in the fields of nuclear energy, thermal management, machinery, chemical engineering and the like.
本发明公开了一种新型各向同性核级石墨材料及其制备方法，以含有球形化的天然鳞片石墨为骨料制得，骨料中的球形化的天然鳞片石墨的占比为50～100wt％，其具体制备过程包括：球形化处理、提纯、混捏、二次粉碎及筛分、成型、一次焙烧、浸渍、二次焙烧和石墨化处理。本发明通过将天然鳞片石墨进行球形化处理后制得各向同性核级石墨材料，具有密度高、热导率高、膨胀系数低、各向同性度优异的特点，在核能、热管理、机械、化工等领域存在较大应用前景。
Novel isotropic nuclear-grade graphite material and preparation method thereof
一种新型各向同性核级石墨材料及其制备方法
SHEN KE (author) / XU KUN (author) / CAO XINLEI (author)
2020-07-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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