公开(公告)号：EP1165845A4

公开(公告)日：2002-06-12

申请号：EP00911185

申请日：2000-02-23

申请人： HYLSA SA

发明人： SALINAS-FERNANDEZ MARIO A ,  GUERRA-REYES MARIA T ,  APARICIO-ARRANZ JOSE M ,  VILLARREAL-TREVINO JUAN A ,  PEDROZA-CONTRERAS MIGUEL ANGEL

IPC分类号： C21B13/00 ,  C21B13/04 ,  C22B1/24 ,  C22B5/12 ,  C22B7/02 ,  C22B19/30 ,  C22B1/20 ,  C21B13/14 ,  C22B1/16 ,  C22B1/216 ,  C22B1/22 ,  C22B1/245 ,  C22B13/02 ,  C22B17/02 ,  C22B19/00 ,  C22B19/34

CPC分类号： C22B1/2406 ,  C21B13/0046 ,  C21B13/04 ,  C22B5/12 ,  C22B7/02 ,  C22B19/30 ,  Y02P10/122 ,  Y02P10/136 ,  Y02P10/216

摘要： The present invention relates to a method and apparatus for separating undesired toxic metals, such as Zn, Pb and Cd, from iron-containing materials by: sintering a mixture of such materials (typically including EAF dust and mill scale) with carbonaceous particles to form sturdy sinter lumps; preheating such lumps in a non-reducing atmosphere, if needed, to achieve an elevated temperature generally above the vaporization temperature of the undesired metals, but below the sticking temperature of said iron-containing lumps (which is typically below the vaporization temperatures of such undesired metals in their oxide form), feeding the lumps at such elevated temperature into a reduction reactor; flowing hot reducing gas through said lumps to volatilize said undesired reduced metals and carry the volatilized metals out of said reduction reactor leaving the iron-containing lumps largely stripped of the undesired metals and ready for discharge and safe and/or useful disposal or re-use, and finally cooling the off gas from the reactor to separate out the resulting solidified unwanted metals (typically in their oxide form resulting from a water quench cooling).