Process for decreasing the contaminant content of aluminium...

Details Process for decreasing the contaminant content of aluminium... Process for decreasing the contaminant content of aluminium...

C - Chemistry, Metallurgy

22

B

53/246

C22B 21/06 (2006.01)

Patent

CA 1144378

ABSTRACT OF THE DISCLOSURE The invention relates to a process for decreasing the contaminant content of aluminium melte or of aluminium alloy melts, in the first line their content of alkali metal, of hydrogen gas and of solid non-metallic contaminants, especially oxides in a way that an inert gas of a pressure below 2 atmospheres, preferably nitrogen gas containing a powder which develops chlorine gas is led into the aluminium melt or aluminium alloy melt isolated from the air, at a temperature of 670 - 860 °C.

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