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    METHOD USING ADSORBENT
    2.
    发明公开
    METHOD USING ADSORBENT 审中-公开

    公开(公告)号：US20240165582A1

    公开(公告)日：2024-05-23

    申请号：US18274788

    申请日：2022-01-28

    申请人： MITSUI MINING & SMELTING CO., LTD.

    发明人： Takao OSAKO ,  Kazuhiko KATO ,  Yutaka KOBAYASHI

    IPC分类号： B01J20/10 ,  B01J20/28 ,  B01J20/34 ,  C02F1/28 ,  C02F101/20

    CPC分类号： B01J20/103 ,  B01J20/28069 ,  B01J20/28083 ,  B01J20/34 ,  C02F1/281 ,  B01J2220/82 ,  C02F2101/20

    摘要： An object of the present invention is to provide a novel method of recovering a metal and/or a metal ion from a liquid to be treated, by use of a monolith adsorbent, and a novel method of regenerating an adsorbent used in the method of recovering a metal and/or a metal ion from a liquid to be treated, and, in order to achieve the object, the present invention provides a method of recovering a metal and/or a metal ion, the method including the following steps of:



    (1) preparing for a solution containing a metal and/or a metal ion;
    (2) preparing for an adsorbent having a co-continuous structure formed by: a ceramic skeleton including mesopores; and macropores, wherein a surface of the ceramic skeleton is modified by a metal- and/or metal ion-adsorbable functional group, a most frequent pore diameter of the macropores before modification by the functional group is 0.20 μm or more and 4.0 μm or less, and a most frequent pore diameter of the mesopores before modification by the functional group is 2.0 nm or more and 50 nm or less;
    (3) contacting the solution and the adsorbent;
    (4) contacting the adsorbent subjected to step (3) and an acidic solution; and
    (5) recovering the metal and/or the metal ion from the acidic solution subjected to step (4).

    APPARATUSES AND METHODS FOR PRODUCING SOL, GEL AND SILICA POROUS BODY
    3.
    发明公开
    APPARATUSES AND METHODS FOR PRODUCING SOL, GEL AND SILICA POROUS BODY 审中-公开

    公开(公告)号：US20240166524A1

    公开(公告)日：2024-05-23

    申请号：US18274615

    申请日：2022-01-28

    申请人： MITSUI MINING & SMELTING CO., LTD.

    发明人： Takao OSAKO ,  Kazuhiko KATO ,  Yutaka KOBAYASHI

    IPC分类号： C01B33/141 ,  C01B33/146 ,  C01B33/152 ,  C01B33/157 ,  C04B38/00

    CPC分类号： C01B33/141 ,  C01B33/146 ,  C01B33/152 ,  C01B33/157 ,  C04B38/0045 ,  C04B2235/3418

    摘要： An object of the present invention is to provide apparatuses and methods, in which solation of a mixed liquid can be allowed to progress under sufficiently controlled conditions with the mixed liquid being effectively cooled, to thereby industrially produce a homogeneous sol, and then sol-gel transition with a phase separation process can be induced, to produce a gel having a co-continuous structure of a skeleton phase and a solvent phase and to produce a silica porous body having macropores. According to one embodiment of the present invention, there is provided a sol producing apparatus (1) that produces a sol for use in production of a silica porous body having macropores, the sol producing apparatus (1) including a mixing section (11) that prepares a mixed liquid (M) containing a silica precursor, a catalyst and a macropore forming agent, a first feeding section (12) that feeds the silica precursor to the mixing section (11), a second feeding section (13A) that feeds the catalyst and the macropore forming agent in admixture with each other, to the mixing section (11), a discharging pipe (14) that discharges the mixed liquid (M) from the mixing section (11), and a cooling section (15) that cools the mixed liquid (M) flowing through the discharging pipe (14), to 35° C. or less.