- 专利标题: Method and device for treating and utilizing bypass dusts
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申请号: US15577225申请日: 2016-05-20
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公开(公告)号: US20180148374A1公开(公告)日: 2018-05-31
- 发明人: Serge Lukas ZIHLMANN , Florian Christian TRELA-GROSS
- 申请人: Holcim Technology Ltd.
- 优先权: ATA339/2015 20150528
- 国际申请: PCT/IB2016/000672 WO 20160520
- 主分类号: C04B7/43
- IPC分类号: C04B7/43 ; C04B7/60 ; B01D47/02 ; C02F9/00
摘要:
A method for treating and utilizing bypass dusts from a cement production process involves a) contacting the bypass dust with an aqueous phase and mixing the same to obtain a suspension, wherein water-soluble components of the bypass dust are dissolved in the aqueous phase; b) performing a solid/liquid separation, in particular a vacuum filtration or a filter press filtration, to separate the solids contained in the suspension, wherein a brine remains; c) precipitating a partial amount of the heavy metals present in the brine, and optionally Ca, and separating the precipitate from the brine; and d) subjecting the brine to an electrocoagulation, wherein a flocculate containing the heavy metals remaining in the brine is separated.
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