RECOVERY OF ELEMENTAL PHOSPHORUS FROM PHOSPHORUS SLUDGE
    1.
    发明公开
    RECOVERY OF ELEMENTAL PHOSPHORUS FROM PHOSPHORUS SLUDGE 审中-公开
    从含磷污泥中回收元素磷

    公开(公告)号:EP1237816A1

    公开(公告)日:2002-09-11

    申请号:EP00982729.6

    申请日:2000-07-27

    IPC分类号: C01B25/027

    CPC分类号: C01B25/027 Y10S210/906

    摘要: Disclosed is a method of recovering elemental phosphorus from a sludge that contains water, dirt, and elemental phosphorus. In the first step, the sludge is melted. A mixture is formed of the melted sludge and about 0.5 to about 3 wt% of an oxidizing agent, based on the weight of said elemental phosphorus in the sludge, and about 75 to about 400 wt% water, based on the weight of the sludge. The mixture is stirred until a continuous elemental phosphorus phase forms. The purified phosphorus phase is separated from the mixture.