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    Fluidized bed method and plant for the heat treatment of solids containing titanium
    2.
    发明授权
    Fluidized bed method and plant for the heat treatment of solids containing titanium 有权
    流化床方法和用于热处理含钛固体的设备

    公开(公告)号：US07651547B2

    公开(公告)日：2010-01-26

    申请号：US10540376

    申请日：2003-12-10

    申请人： Dirk Nuber ,  Michael Ströder ,  Werner Stockhausen ,  Ali-Naghi Beyzavi ,  Lothar Formanek ,  Martin Hirsch

    发明人： Dirk Nuber ,  Michael Ströder ,  Werner Stockhausen ,  Ali-Naghi Beyzavi ,  Lothar Formanek ,  Martin Hirsch

    IPC分类号： B01J8/24 ,  C22B1/10 ,  C22B5/14

    CPC分类号： B01J8/1818 ,  B01J8/1836 ,  B01J8/26 ,  B01J2208/00548 ,  B01J2208/00725 ,  C21B13/0033 ,  C22B1/10 ,  C22B5/14 ,  C22B34/1204 ,  C22B34/1209 ,  F27B15/02 ,  F27B15/10 ,  Y02P10/136

    摘要： The present invention relates to a method and a plant for the heat treatment of solids containing titanium and possibly further metal oxides, in which fine-grained solids are heated to a temperature of 700 to 950° C. in a fluidized bed reactor (1). To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube (3) into a mixing chamber (7) of the reactor (1), the gas supply tube (3) being at least partly surrounded by a stationary annular fluidized bed (10) which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed (10) are adjusted such that the particle Froude numbers in the gas supply tube (3) are between 1 and 100, in the annular fluidized bed (10) between 0.02 and 2 and in the mixing chamber (7) between 0.3 and 30.

    摘要翻译： 本发明涉及用于热处理包含钛和可能的其它金属氧化物的固体的方法和设备，其中在流化床反应器（1）中将细粒固体加热至700-950℃， 。 为了提高能量利用率，建议从下方通过气体供给管（3）将第一气体或气体混合物引入反应器（1）的混合室（7），气体供给管（3）处于 最少部分地被固定的环形流化床（10）包围，所述静止环形流化床通过供应流化气体而流化。 调节第一气体或气体混合物以及用于环形流化床（10）的流化气体的气体速度，使得气体供应管（3）中的微粒弗劳德数在1和100之间，在环形 流化床（10）在0.02和2之间，并且在混合室（7）中在0.3和30之间。

    Fluidized bed method and plant for the heat treatment of solids containing titanium
    3.
    发明申请
    Fluidized bed method and plant for the heat treatment of solids containing titanium 有权
    流化床方法和用于热处理含钛固体的设备

    公开(公告)号：US20060162500A1

    公开(公告)日：2006-07-27

    申请号：US10540376

    申请日：2003-12-10

    申请人： Dirk Nuber ,  Michael Stroder ,  Werner Stockhausen ,  Ali-Naghi Beyzavi ,  Lothar Formanek ,  Martin Hirsch

    发明人： Dirk Nuber ,  Michael Stroder ,  Werner Stockhausen ,  Ali-Naghi Beyzavi ,  Lothar Formanek ,  Martin Hirsch

    IPC分类号： C22B34/12

    CPC分类号： B01J8/1818 ,  B01J8/1836 ,  B01J8/26 ,  B01J2208/00548 ,  B01J2208/00725 ,  C21B13/0033 ,  C22B1/10 ,  C22B5/14 ,  C22B34/1204 ,  C22B34/1209 ,  F27B15/02 ,  F27B15/10 ,  Y02P10/136

    摘要： The present invention relates to a method and a plant for the heat treatment of solids containing titanium and possibly further metal oxides, in which fine-grained solids are heated to a temperature of 700 to 950° C. in a fluidized bed reactor (1). To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube (3) into a mixing chamber (7) of the reactor (1), the gas supply tube (3) being at least partly surrounded by a stationary annular fluidized bed (10) which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed (10) are adjusted such that the particle Froude numbers in the gas supply tube (3) are between 1 and 100, in the annular fluidized bed (10) between 0.02 and 2 and in the mixing chamber (7) between 0.3 and 30.

    摘要翻译： 本发明涉及用于热处理包含钛和可能的其它金属氧化物的固体的方法和设备，其中在流化床反应器（1）中将细粒固体加热至700-950℃， 。 为了提高能量利用率，建议从下方通过气体供给管（3）将第一气体或气体混合物引入反应器（1）的混合室（7），气体供给管（3）处于 最少部分地被固定的环形流化床（10）包围，所述静止环形流化床通过供应流化气体而被流化。 调节第一气体或气体混合物以及用于环形流化床（10）的流化气体的气体速度，使得气体供应管（3）中的微粒弗劳德数在1和100之间，在环形 流化床（10）在0.02和2之间，并且在混合室（7）中在0.3和30之间。

    Process for selective flotation of copper-lead-zinc sulfide
    5.
    发明授权
    Process for selective flotation of copper-lead-zinc sulfide 失效
    选择性浮选铜 - 铅 - 硫化锌的工艺

    公开(公告)号：US5439115A

    公开(公告)日：1995-08-08

    申请号：US149087

    申请日：1993-11-09

    申请人： Ali-Naghi Beyzavi ,  Leo Kitschen ,  Friedrich Rosenstock ,  Horst Dittmann

    发明人： Ali-Naghi Beyzavi ,  Leo Kitschen ,  Friedrich Rosenstock ,  Horst Dittmann

    IPC分类号： B03D1/02 ,  B03D1/06 ,  B03B1/00

    CPC分类号： B03D1/02 ,  B03D1/06

    摘要： In a process for a selective flotation of a copper-lead-zinc sulfide ore the raw ore is ground and slurried with water and the resulting suspension is aerated with air to adjust a certain oxidation-reduction potential and is subsequently successively conditioned with SO.sub.2, Ca(OH).sub.2, and collecting and frothing agents, whereafter a flotation of Cu is effected. An oxidation-reduction potential which is 70 to 90% of the oxidation-reduction potential desired for the flotation of Cu is adjusted by the aeration of the suspension with air before the flotation of Cu, the desired oxidation-reduction potential of 60 to 340 mV is adjusted during the flotation of Cu by the aeration with air, the flotation of Cu is effected at a pH of 8.5 to 10.5 and Cu is removed from the flotation process with the froth.

    摘要翻译： 在选择性浮选铜 - 铅 - 锌硫化物矿石的过程中，将原矿矿石研磨并用水制浆，并将所得悬浮液用空气充气以调节一定的氧化还原电位，随后连续地用SO 2，Ca （OH）2，以及收集和起泡剂，然后进行浮选。 Cu浮选所需的氧化还原电位的70〜90％的氧化还原电位通过在浮选Cu之前利用空气充气来调节，期望的氧化还原电位为60〜340mV 在通过空气曝气在Cu浮选期间进行调节，Cu的浮选在8.5至10.5的pH下进行，并且用浮沫从浮选过程中除去Cu。

    Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing substances
    6.
    发明授权
    Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing substances 失效
    从含TiO 2的物质中回收TiO2浓缩物

    公开(公告)号：US5186920A

    公开(公告)日：1993-02-16

    申请号：US795292

    申请日：1991-11-19

    申请人： Rudolf Heng ,  Walter Koch ,  Ali-Naghi Beyzavi

    发明人： Rudolf Heng ,  Walter Koch ,  Ali-Naghi Beyzavi

    IPC分类号： C22B34/12

    CPC分类号： C22B34/1204

    摘要： The iron content of the TiO.sub.2 -containing precursor is subjected to a direct reduction to effect a metallization of at least 90%. The reduced product is separated into magnetic and nonmagnetic fractions by magnetic separation. To oxidize the metallic iron, the magnetic fraction is subjected to an oxidation in an acid medium with agitation at a pH value below 2, under a pressure of 12 to 24 bars, and at a temperature from 150.degree. to 210.degree. C. with a supply of an oxygen-containing gas that contains at least 90% oxygen. When the suspension has been pressure-relieved, the hematite which has been formed is separated from the TiO.sub.2 concentrate.

    摘要翻译： 将含TiO 2的前体的铁含量进行直接还原以实现至少90％的金属化。 通过磁分离将还原产物分离成磁性和非磁性级分。 为了氧化金属铁，磁性部分在酸性介质中在pH值低于2的搅拌下，在12至24巴的压力和150至210℃的温度下进行氧化， 供应含有至少90％氧气的含氧气体。 当悬浮液被压力释放时，已经形成的赤铁矿与TiO 2浓缩物分离。