Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall
AssigneeDelachaux S.A.
InventorPhilippe Liebaert
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Abstract
In the method of producing metals or metal alloys of high purity, in particular metallic chromium, granules of metal containing non-metallic inclusions and a reducing agent are treated under predetermined conditions of temperature and pressure so that the reducing agent reacts on the inclusions. During the treatment, the granules (26) are placed in a crucible (2) having an opening (14), and a wall (4) presenting at least one orifice (24).
Claims17
A method of producing granules (26) of metal in which granules of metal containing non-metallic inclusions and a reducing agent are treated under predetermined conditions of temperature and pressure so that the agent reduces the inclusions, the method comprising during the treatment,
- disposing the granules (26) in a crucible (2) having an opening (14) and a side wall (4) including a plurality of orifices (24) and facilitating a flow of gas through the crucible through the plurality of orifices, wherein the plurality of orifices (24) occupy the bottom two-thirds of the side wall.
The method according to 1, wherein it is implemented to produce metallic chromium.
Dependencies are inferred from the claim text.