公开(公告)号：US12054804B2

公开(公告)日：2024-08-06

申请号：US16755789

申请日：2018-12-13

申请人： ArcelorMittal

发明人： Gaelle Kerzerho ,  Helene Boucard ,  Ana-Maria Iosif

IPC分类号： C22B19/00 ,  C22B3/00 ,  C22B7/00 ,  C22B7/02

CPC分类号： C22B19/22 ,  C22B7/007 ,  C22B7/02 ,  C22B13/045

摘要： A method for the treatment of sludge containing iron, the method including a leaching step wherein the sludge containing iron is mixed with an acid and an oxidation agent so as to create an oxidized leachate, and a step of precipitation of iron wherein the oxidized leachate is mixed with a neutralizing agent so as to create a mixture composed of a solid part including precipitated iron and of a liquid part, the neutralizing agent including at least 30% in weight of dust recovered from a bag filter treatment of ironmaking, steelmaking, coke making or sintering gas.