PROCEDE DE CRISTALLISATION D'UNE SOLUTION AQUEUSE
    3.
    发明公开
    PROCEDE DE CRISTALLISATION D'UNE SOLUTION AQUEUSE 审中-公开
    PROCESS FOR结晶的水溶液

    公开(公告)号:EP1183085A1

    公开(公告)日:2002-03-06

    申请号:EP00931332.1

    申请日:2000-05-22

    IPC分类号: B01D9/00

    CPC分类号: B01D9/00 B01D9/005

    摘要: The invention relates to a method for crystallizing an aqueous solution. According to the invention, said method consists in the following steps: at least one surfactant is initially added to the aqueous solution if the aqueous solution does not at least already contain one natural surfactant; the volume of the medium is subsequently swollen to form foam, whereupon crystallization occurs in a structured medium in the form of foam and said structured medium is used as a provisional material support for crystals undergoing a process of formation, after which the crystals or agglomerates of crystals are recovered by destructuring said foam.

    PROCEDE DE FABRICATION D'UN CHARBON ACTIF A PROPRIETES FERROMAGNETIQUES, ET CHARBON ACTIF OBTENU A PARTIR DUDIT PROCEDE
    9.
    发明公开
    PROCEDE DE FABRICATION D'UN CHARBON ACTIF A PROPRIETES FERROMAGNETIQUES, ET CHARBON ACTIF OBTENU A PARTIR DUDIT PROCEDE 审中-公开
    用于生产活性炭铁磁特性碳,用这种方法生产的木炭

    公开(公告)号:EP1068150A1

    公开(公告)日:2001-01-17

    申请号:EP99909067.3

    申请日:1999-03-23

    IPC分类号: C01B31/08 C01B31/10

    摘要: The invention concerns a method for making activated carbon with permanent magnetic properties, comprising the following steps: a) impregnating the raw material with an aqueous transition metal salt solution; b) filtering and drying the impregnated dried raw material; c) performing a pyrolysis cycle of the dried filtrate, gradually increasing the temperature up to a set temperature not less than 600 °C, and maintaining said temperature during sufficient retention time to obtain the desired degree of activation. The invention also concerns an activated carbon with ferromagnetic properties obtained by said method, said activated carbon being characterised in that it comprises transition metal oxide crystals closely embedded in its carbon structure whereof the micropores are not obstructed.