C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 1/06 (2006.01) C22B 7/00 (2006.01) C22B 11/02 (2006.01)
Patent
CA 2570325
The method and furnace according to the invention enable a continuous processing of anode slime and are particularly suited to be connected to a process where anode slime is treated by hydrometallurgic methods after roasting. In the method according to the invention, the slime containing valuable metals and selenium is dried, roasted, sulfatized and cooled. The method includes steps to be carried out in succession, in continuous operation, so that the slime forms a slime layer on the conveyor and is conveyed to be treated in successive drying, roasting, sulfatizing and sulfuric acid removal and cooling units.
La présente invention concerne un procédé et un four permettant un traitement continu de boue anodique et qui conviennent particulièrement pour être reliés à un processus dans lequel la boue anodique est traitée par des procédés hydrométallurgiques après un grillage. Dans ce procédé, la boue contenant des métaux de valeur et du sélénium est séchée, grillée, sulfatées et refroidie. Ce procédé comprend des étapes effectuées successivement, en continu, de sorte que la boue forme une couche de boue sur le transporteur et soit transportée en vue d'un traitement dans des unités successives de séchage, de grillage, de sulfatage, de suppression d'acide sulfurique et de refroidissement.
Hyvarinen Olli
Jarvinen Olli
Lindroos Leo
Taskinen Pekka
Virtanen Henri
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Outokumpu Technology Oyj
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