APPARATUS AND METHOD FOR REMOVING CADMIUM FROM A CALCINED MATERIAL
    2.
    发明申请
    APPARATUS AND METHOD FOR REMOVING CADMIUM FROM A CALCINED MATERIAL 审中-公开
    从煅烧材料中除去镉的装置和方法

    公开(公告)号:WO2018002793A1

    公开(公告)日:2018-01-04

    申请号:PCT/IB2017/053763

    申请日:2017-06-23

    Applicant: FLSMIDTH A/S

    Abstract: An apparatus and method for removal of cadmium can include a first reactor that is configured to calcine material containing phosphate and subsequently feed that calcined material to a cadmium removal vessel that is operated to remove cadmium from the calcined material. The cadmium removal vessel may be operated so that conditions in the vessel provide a reducing environment for removal of cadmium from the calcined material. The removed cadmium can be subsequently processed via heat exchange and filtration that is configured to remove a substantial amount, if not all, of the cadmium from a flow of material containing the removed cadmium prior to gas of this flow of material being output to the atmosphere. In some embodiments, a seeding agent may be added to the material flow containing the cadmium prior to, during, or after heat exchange to help facilitate filtration of the cadmium out of the flow.

    Abstract translation: 用于去除镉的装置和方法可以包括第一反应器,其被配置为煅烧含有磷酸盐的材料并且随后将该煅烧的材料供给到镉去除容器,该镉去除容器被操作以从煅烧材料中去除镉 。 可以操作镉去除容器,使得容器中的条件为从煅烧材料去除镉提供还原环境。 可以随后通过热交换和过滤来处理去除的镉,该热交换和过滤被配置成在输送到大气中的材料流的气体之前从含有去除的镉的材料流中去除大量的(如果不是全部的话)镉 。 在一些实施方案中,可以在热交换之前,期间或之后将引发剂添加到含有镉的材料流中,以帮助促进将镉从流中滤出。

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