Protective gas for metal production

C - Chemistry – Metallurgy – 23 – F

Patent

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C23F 11/02 (2006.01) B22D 21/04 (2006.01)

Patent

CA 2598351

Disclosed is a protective gas composition for preventing rapid oxidation or combustion of a molten magnesium/magnesium alloy. This protective gas composition is composed of a fluorine-containing organic compound and a carrier gas. Also disclosed is a method for preventing rapid oxidation or combustion of a molten magnesium or a magnesium alloy during production of magnesium or a magnesium alloy. This method is characterized in that the above- described gas composition is used as a protective gas for preventing rapid oxidation or combustion of a molten magnesium or a magnesium alloy.

L'invention concerne une composition de gaz protecteur destinée à éviter une oxydation rapide ou une combustion d'un alliage fondu magnésium/magnésium. Cette composition de gaz protecteur est composée d'un composé organique contenant du fluor et d'un gaz véhicule. L'invention concerne également un procédé destiné à éviter une oxydation rapide ou une combustion de magnésium fondu ou d'un alliage de magnésium lors de la fabrication de magnésium ou d'un alliage de magnésium. Ce procédé est caractérisé en ce que la composition de gaz décrite précédemment est utilisée en tant que gaz protecteur destiné à éviter une oxydation rapide ou une combustion de magnésium fondu ou d'un alliage de magnésium.

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