PROCESS FOR PRODUCING METALS AND METAL ALLOYS IN A SMELT REDUCTION VESSEL

摘要

A process and a smelt reduction vessel (1) for producing metals and metal alloys, in particular iron and iron alloys, from metal oxides and ores in a smelt reduction vessel. The process and the vesse l are characterised in that loss of liquid and solids with waste gases (11) from the vessel are minimised by causing the waste gases, oxidising gases (5) and entrained liquid and sol- ids in the space in the vessel that is above the molten metal to rotate abou t a vertical axis of the vessel thereby forcing liquid and solids outwardly toward the wall of the vessel. This rotational motion may b e caused by injecting some or all of the oxidising gases through tuyeres (4) positioned above the bath surface obliquely to a vertical plane through a vertical axis of the vessel. The vessel may have a substantially rotationally symmetrical shape at least in t he space above the molten metal (2A).