公开(公告)号：EP1597403B1

公开(公告)日：2008-03-12

申请号：EP04713920.9

申请日：2004-02-24

申请人： Outotec Oyj

发明人： JÄRVINEN, Aimo ,  LAHTINEN, Marko ,  TAKALA, Heikki

IPC分类号： C22B3/08 ,  C22B19/00

CPC分类号： C22B3/08 ,  C22B19/22 ,  C22B19/26 ,  Y02P10/234

摘要： The invention relates to method for leaching zinc-containing materials in connection with the electrolytic recovery of zinc. According to this method, the feed materials i.e. zinc calcine and zinc sulphide, are leached in three stages, in which he sulphuric acid content of the stages rises in accordance with the direction in which the solids are moving. The solids and solution formed in the leaching stages are routed throughout the process countercurrently in relation to each other.