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A platform for research: civil engineering, architecture and urbanism
Preparation method of high-purity graphite material
The invention discloses a preparation method of a high-purity graphite material, which comprises the following steps: (1) mixing carbon aggregate and asphalt, and carrying out pressurized mixing and kneading to obtain a paste material; (2) rolling, crushing and sieving the paste obtained in the step (1) to obtain pressed powder; performing cold isostatic pressing treatment on the pressed powder to obtain a green block; (3) carrying out pressure roasting on the green block obtained in the step (2) to obtain a roasted block; and (4) carrying out graphitization treatment on the roasted block obtained in the step (3) to obtain the high-purity graphite material. According to the preparation method disclosed by the invention, by virtue of a synergistic effect of pressurized kneading and pressurized roasting, the asphalt is more uniformly spread on the surface of the carbon aggregate and infiltrated into pores of the carbon aggregate to form a sintering neck, and pressurized roasting promotes carbonization and ring formation of the asphalt, so that tight connection of different aggregates is realized, and the homogeneity of the material is improved; the high-purity graphite material which does not need to be impregnated and roasted for multiple times is prepared.
本发明公开了一种高纯石墨材料的制备方法，包括以下步骤：(1)将炭质骨料与沥青混合进行加压混捏，得到糊料；(2)将步骤(1)中得到的糊料进行轧片、破碎、过筛得到压粉；将所述压粉进行冷等静压处理，得到生坯块体；(3)将步骤(2)中得到的生坯块体进行加压焙烧，得到焙烧块体；(4)将步骤(3)中得到的焙烧块体进行石墨化处理，得到高纯石墨材料。本发明的制备方法借助加压混捏和加压焙烧的协同效应，使沥青更为均匀地在炭质骨料表面铺展，并浸润到炭质骨料的孔隙中，形成烧结颈，加压焙烧促进沥青炭化成环，实现不同骨料的紧密连接，改进材料均质性，制备出一种无需浸渍和多次焙烧的高纯石墨材料。
Preparation method of high-purity graphite material
The invention discloses a preparation method of a high-purity graphite material, which comprises the following steps: (1) mixing carbon aggregate and asphalt, and carrying out pressurized mixing and kneading to obtain a paste material; (2) rolling, crushing and sieving the paste obtained in the step (1) to obtain pressed powder; performing cold isostatic pressing treatment on the pressed powder to obtain a green block; (3) carrying out pressure roasting on the green block obtained in the step (2) to obtain a roasted block; and (4) carrying out graphitization treatment on the roasted block obtained in the step (3) to obtain the high-purity graphite material. According to the preparation method disclosed by the invention, by virtue of a synergistic effect of pressurized kneading and pressurized roasting, the asphalt is more uniformly spread on the surface of the carbon aggregate and infiltrated into pores of the carbon aggregate to form a sintering neck, and pressurized roasting promotes carbonization and ring formation of the asphalt, so that tight connection of different aggregates is realized, and the homogeneity of the material is improved; the high-purity graphite material which does not need to be impregnated and roasted for multiple times is prepared.
本发明公开了一种高纯石墨材料的制备方法，包括以下步骤：(1)将炭质骨料与沥青混合进行加压混捏，得到糊料；(2)将步骤(1)中得到的糊料进行轧片、破碎、过筛得到压粉；将所述压粉进行冷等静压处理，得到生坯块体；(3)将步骤(2)中得到的生坯块体进行加压焙烧，得到焙烧块体；(4)将步骤(3)中得到的焙烧块体进行石墨化处理，得到高纯石墨材料。本发明的制备方法借助加压混捏和加压焙烧的协同效应，使沥青更为均匀地在炭质骨料表面铺展，并浸润到炭质骨料的孔隙中，形成烧结颈，加压焙烧促进沥青炭化成环，实现不同骨料的紧密连接，改进材料均质性，制备出一种无需浸渍和多次焙烧的高纯石墨材料。
Preparation method of high-purity graphite material
高纯石墨材料的制备方法
LIU YANLI (author) / YAN HONGYI (author) / TU CHUANJUN (author) / XIE YUTONG (author)
2024-10-11
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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