Production of metal powders by reduction of metal salts in fused bath
AssigneeCerex Corporation
InventorsGerard-Pierre Bienvenu, Bernard Chaleat, Dominique Dubruque, Jean-Claude Girardot, Philippe Vaxelaire
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Abstract
In a process for the production of a metal by reducing a salt of said metal, an exchange is carried out between a reducing metal and a reducible metal within a fused salt bath under conditions in which the reducible metal in the reduced metal state is immiscible in the bath in the presence of the reducing metal which has previously been dissolved in the bath.
Claims18
A process for the production of a metal by reduction of a salt of said metal, said process comprising providing a reducing metal dissolved in a bath of fused metal salts and adding the salt to be reduced under conditions in which the reducible metal in the state of reduced metal is immiscible in the bath in the presence of the reducing metal in the state of salt dissolved in said bath, said reducing metal being introduced into said bath in the state of a mixture with a halide of another metal forming with the halide of said reducing metal a eutectic mixture which constitutes said bath.
A process for the production of a reducible metal (A) by reduction of a salt of said metal, said process comprising forming a reducing metal (B) in a fused salt bath by reduction of a salt of said reducing metal with calcium carbide, reacting resultant reducing metal (B) with said salt of said reducible metal (A) in said fused salt bath under conditions in which the reducible metal in the state of reduced metal is immiscible in the bath in the presence of the reducing metal in the state of salt dissolved in said bath.
A process for the production of a metal by reduction of a salt of said metal, said process comprising providing a reducing metal dissolved in a bath of fused metal salts, adding the salt to be reduced under conditions in which the reducible metal in the state of reduced metal is immiscible in the bath in the presence of the reducing metal in the state of salt dissolved in said bath, and reacting resultant salt of said reducing metal with calcium carbide so as to regenerate said reducing metal.
Dependencies are inferred from the claim text.