- 专利标题： Phosphogypsum decomposition process
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申请号： US16766500申请日： 2018-11-22
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公开(公告)号： US11383987B2公开(公告)日： 2022-07-12
- 发明人: Driss Dhiba , Lhoussaine Omari , Jamal Chaouki , Ahmad Mohaddespour
- 申请人： OCP SA
- 申请人地址： MA Casablanca
- 专利权人： OCP SA
- 当前专利权人： OCP SA
- 当前专利权人地址： MA Casablanca
- 代理机构： Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- 优先权： EP17203182 20171122
- 国际申请： PCT/MA2018/000019 WO 20181122
- 国际公布： WO2019/103586 WO 20190531
- 主分类号： C01F11/00
- IPC分类号： C01F11/00 ; C01F11/08 ; B01J8/24 ; C01B17/50
摘要：
The present invention relates to a process for decomposing calcium sulfate (CaSO4) present in phosphogypsum (PG), comprising the following steps: a) providing a reactor containing phosphogypsum (PG) and a solid source of carbon (C), b) reacting a flow of dioxygen (Oz) with the source of carbon (C) so as to generate carbon oxide (CO), c) reacting carbon oxide (CO) obtained in step a) with calcium sulfate (CaSO4) of the phosphogypsum to produce calcium oxide (CaO) and sulfoxide (SO2) according to the following reaction: CaSO4+CO→CaO+SO2+CO2 wherein the mass ratio C/PG is between 0.2 and DA, and the mass ratio 15 O2/PG is between 0.5 and 1.5.
公开/授权文献
- US20200377375A1 Phosphogypsum Decomposition Process 公开/授权日：2020-12-03
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