Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of high-density ultrafine particle graphite for ionization chamber
The invention provides a preparation method of high-density ultrafine granular graphite for an ionization chamber, which comprises the following steps: crushing coal pitch, stirring with a first organic solvent at the temperature of 50-100 DEG C, extracting insoluble substances, crushing, and sufficiently stirring with a second organic solvent at the temperature of 50-100 DEG C to obtain a soluble substance solution; after the temperature of the ultrafine particle size aggregate carbon in the kneading machine reaches a preset temperature, adding the soluble substance solution as a binder into the kneading machine for liquid phase mixing, heating to a temperature higher than the boiling point of the second organic solvent, keeping the temperature constant, and evaporating the solvent to dryness to obtain a paste material; crushing the paste to obtain pressed powder; putting the pressed powder into a mold, pressing, molding, maintaining the pressure, and releasing the pressure to obtain a green body sample; carbonizing the green body sample in an inert atmosphere, heating to a first preset carbonization final temperature, and keeping the temperature to obtain a carbonized product; and carrying out impregnation densification treatment and pressure maintaining on the carbonized product, carrying out secondary carbonization after impregnation is completed, maintaining the final temperature of second preset carbonization, carrying out graphitization treatment and maintaining, cooling and discharging.
本发明提供一种电离室用高致密超细颗粒石墨的制备方法，所述方法包括：将煤沥青破碎，与第一有机溶剂在50‑100℃温度条件下搅拌，提取不溶物，将其破碎，与第二有机溶剂在50‑100℃温度条件下充分搅拌，得到可溶物溶液；待捏合机中超细粒径骨料炭温度达到预设温度，将可溶物溶液作为粘结剂加入捏合机内进行液相混合，升温至第二有机溶剂沸点以上恒温，蒸干溶剂后得到糊料；破碎糊料得到压粉；将压粉装入模具压制成型保压，泄压后制得生坯样品；将生坯样品在惰性气氛中进行炭化处理，升温至第一预设炭化最终温度保持，得到炭化制品；对炭化制品进行浸渍增密处理保压，浸渍完毕后进行二次炭化，达到第二预设炭化最终温度保持，进行石墨化处理保持，冷却出炉。
Preparation method of high-density ultrafine particle graphite for ionization chamber
The invention provides a preparation method of high-density ultrafine granular graphite for an ionization chamber, which comprises the following steps: crushing coal pitch, stirring with a first organic solvent at the temperature of 50-100 DEG C, extracting insoluble substances, crushing, and sufficiently stirring with a second organic solvent at the temperature of 50-100 DEG C to obtain a soluble substance solution; after the temperature of the ultrafine particle size aggregate carbon in the kneading machine reaches a preset temperature, adding the soluble substance solution as a binder into the kneading machine for liquid phase mixing, heating to a temperature higher than the boiling point of the second organic solvent, keeping the temperature constant, and evaporating the solvent to dryness to obtain a paste material; crushing the paste to obtain pressed powder; putting the pressed powder into a mold, pressing, molding, maintaining the pressure, and releasing the pressure to obtain a green body sample; carbonizing the green body sample in an inert atmosphere, heating to a first preset carbonization final temperature, and keeping the temperature to obtain a carbonized product; and carrying out impregnation densification treatment and pressure maintaining on the carbonized product, carrying out secondary carbonization after impregnation is completed, maintaining the final temperature of second preset carbonization, carrying out graphitization treatment and maintaining, cooling and discharging.
本发明提供一种电离室用高致密超细颗粒石墨的制备方法，所述方法包括：将煤沥青破碎，与第一有机溶剂在50‑100℃温度条件下搅拌，提取不溶物，将其破碎，与第二有机溶剂在50‑100℃温度条件下充分搅拌，得到可溶物溶液；待捏合机中超细粒径骨料炭温度达到预设温度，将可溶物溶液作为粘结剂加入捏合机内进行液相混合，升温至第二有机溶剂沸点以上恒温，蒸干溶剂后得到糊料；破碎糊料得到压粉；将压粉装入模具压制成型保压，泄压后制得生坯样品；将生坯样品在惰性气氛中进行炭化处理，升温至第一预设炭化最终温度保持，得到炭化制品；对炭化制品进行浸渍增密处理保压，浸渍完毕后进行二次炭化，达到第二预设炭化最终温度保持，进行石墨化处理保持，冷却出炉。
Preparation method of high-density ultrafine particle graphite for ionization chamber
一种电离室用高致密超细颗粒石墨的制备方法
CHENG JINXING (Autor:in) / TANG ZHONGFENG (Autor:in) / SONG JINLIANG (Autor:in) / WANG QINGBO (Autor:in) / YU AI (Autor:in) / WEN WEIWEI (Autor:in) / LIAN PENGFEI (Autor:in) / WU YOUPENG (Autor:in)
30.04.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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