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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.