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Preparation method of high-density and high-strength graphite material
The invention discloses a preparation method of a high-density and high-strength graphite material, and belongs to the technical field of graphite material preparation. The preparation method comprises the following steps: grinding the raw materials: grinding the pitch coke into fine powder; gas phase adsorption: stirring the powder in a closed mixing chamber, and introducing asphalt flue gas; molding-dipping: taking out the mixed material, molding, and dipping a molded green body in a dipping tank; roasting-graphitizing: sequentially roasting and graphitizing the impregnated product, and cooling to obtain the high-density and high-strength graphite material. According to the invention, a gas phase adsorption technology is adopted to replace a traditional mixing and kneading process, asphalt flue gas is adsorbed and permeated to the surfaces of fine powder particles, so that the fine powder particles have certain cohesiveness, a series of problems caused by excessive asphalt consumption in traditional mixing and kneading are avoided, and the preparation efficiency of the product is improved. In addition, direct impregnation is performed after molding, and low-temperature coal pitch permeates into pores of the green body, so that the filling and compacting effects are achieved, and the density and strength of the product are greatly improved.
本发明公开了一种高密高强石墨材料的制备方法，属于石墨材料制备技术领域。本发明的制备方法包括原料磨粉：将沥青焦磨细成细粉；气相吸附：将上述粉料置于密闭混料室内搅拌，并通入沥青烟气；成型—浸渍：取出混料并进行成型，将成型生坯置于浸渍罐中浸渍；焙烧—石墨化：将浸渍品依次进行焙烧和石墨化处理，冷却后即得高密高强石墨材料。本发明采用气相吸附技术替代传统混捏工序，通过沥青烟气附渗透到细粉颗粒表面，使得细粉颗粒具有一定粘结性，避免了传统混捏因过量沥青用量带来的一些列问题，从而提高了制品的制备效率。另外，成型后直接浸渍，低温煤沥青渗入生坯孔隙，起到了填充密实作用，使得制品密度和强度得到较大提升。
Preparation method of high-density and high-strength graphite material
The invention discloses a preparation method of a high-density and high-strength graphite material, and belongs to the technical field of graphite material preparation. The preparation method comprises the following steps: grinding the raw materials: grinding the pitch coke into fine powder; gas phase adsorption: stirring the powder in a closed mixing chamber, and introducing asphalt flue gas; molding-dipping: taking out the mixed material, molding, and dipping a molded green body in a dipping tank; roasting-graphitizing: sequentially roasting and graphitizing the impregnated product, and cooling to obtain the high-density and high-strength graphite material. According to the invention, a gas phase adsorption technology is adopted to replace a traditional mixing and kneading process, asphalt flue gas is adsorbed and permeated to the surfaces of fine powder particles, so that the fine powder particles have certain cohesiveness, a series of problems caused by excessive asphalt consumption in traditional mixing and kneading are avoided, and the preparation efficiency of the product is improved. In addition, direct impregnation is performed after molding, and low-temperature coal pitch permeates into pores of the green body, so that the filling and compacting effects are achieved, and the density and strength of the product are greatly improved.
本发明公开了一种高密高强石墨材料的制备方法，属于石墨材料制备技术领域。本发明的制备方法包括原料磨粉：将沥青焦磨细成细粉；气相吸附：将上述粉料置于密闭混料室内搅拌，并通入沥青烟气；成型—浸渍：取出混料并进行成型，将成型生坯置于浸渍罐中浸渍；焙烧—石墨化：将浸渍品依次进行焙烧和石墨化处理，冷却后即得高密高强石墨材料。本发明采用气相吸附技术替代传统混捏工序，通过沥青烟气附渗透到细粉颗粒表面，使得细粉颗粒具有一定粘结性，避免了传统混捏因过量沥青用量带来的一些列问题，从而提高了制品的制备效率。另外，成型后直接浸渍，低温煤沥青渗入生坯孔隙，起到了填充密实作用，使得制品密度和强度得到较大提升。
Preparation method of high-density and high-strength graphite material
一种高密高强石墨材料的制备方法
LI TAO (author) / WANG WEI (author) / LI XIAOXIANG (author) / XIE AIXIANG (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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