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1. 发明申请

WO1996033949A1 PROCESS AND DEVICE FOR OBTAINING OXIDISED GRAPHITE 审中-公开
标题翻译：用于获得氧化石墨的工艺和装置
公开(公告)号：WO1996033949A1
公开(公告)日：1996-10-31
申请号：PCT/RU1996000106
申请日：1996-04-26
申请人： AVDEEV, Viktor Vasilievich , FINAENOV, Alexandr Ivanovich , NIKOLSKAYA, Irina Viktorovna , MONYAKINA, Ljudmila Arkadievna , KRASNOV, Vladimir Vasilievich , APOSTOLOV, Sergei Petrovich , GODUNOV, Igor Andreevich , SHKIROV, Viktor Afanasievich , MARTYNOV, Igor Jurievich
IPC分类号： C01B31/04
CPC分类号： C01B32/23 , C01B32/225 , C01P2006/11
摘要： The invention pertains to the technology of carbon-graphite materials, in particular to the production of oxidised graphite used as a component in fireproofing materials, and also for obtaining cellular graphite used in metallurgy, thermal power engineering, the chemical industry and other industries. The process for obtaining oxidised graphite involves treating graphite powder in an electrolytic solution of strong acids until intercalation compound are formed, hydrolysis, washing and drying of the oxidised graphite. The treatment is carried out in the presence of chemical oxidants at a constant redox potential of 0.55 - 1.55 V, and/or by anodic oxidisation of the graphite as an electrical current is passed through the graphite/acid mixture between the anode and cathode, the anode potential being kept at a constant 1-2 V and the weight ratio of acid consumption to graphite being 1-4. The strong acids used are primarily sulphuric or nitric acid. The proposed device for use in obtaining oxidised graphite comprises a reactor which is provided with a housing with an inner cylindrical surface. The housing accommodates an anode, cathode and a diaphragm situated between the cathode and anode and permeable to the acid solution. The housing also accommodates vanes mounted radially on an axial horizontal shaft so as to be capable of rotation and radial movement until abutting the anode surface. The anode is a half ring whose axis is offset relative to that of the horizontal shaft, thereby widening the gap between the anode and diaphragm by between 1.5 and 3 times from the feed pipe to the discharge pipe.
摘要翻译：本发明涉及碳 - 石墨材料的技术，特别是生产用作防火材料中的组分的氧化石墨，以及用于获得用于冶金，火力发电，化学工业和其它工业中的泡沫石墨。获得氧化石墨的方法包括在强酸的电解溶液中处理石墨粉，直到形成螯合化合物，水解，洗涤和干燥氧化石墨。处理在化学氧化剂存在下以0.55-1.55V的恒定氧化还原电位进行，和/或通过阳极氧化石墨，电流通过阳极和阴极之间的石墨/酸混合物，阳极电位保持在1-2V的恒定值，酸消耗与石墨的重量比为1-4。使用的强酸主要是硫酸或硝酸。所提出的用于获得氧化石墨的装置包括设置有具有内圆柱表面的壳体的反应器。壳体容纳阳极，阴极和位于阴极和阳极之间并且可渗透酸溶液的隔膜。壳体还容纳径向安装在轴向水平轴上的叶片，以便能够旋转和径向移动直到邻接阳极表面。阳极是半轴，其轴线相对于水平轴偏移，从而将阳极和隔膜之间的间隙从进料管扩大到排出管的1.5至3倍。

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