C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 21/06 (2006.01) C22B 9/02 (2006.01)
Patent
CA 2558104
The invention relates to a method for the purification of a molten metal containing one or more foreign elements. The invention is characterised in that the molten metal is cooled to a eutectic temperature to simultaneously form purified metal crystals and crystals containing at least one foreign element, and in that at least some of the crystals containing at least one foreign element are separated from the purified metal crystals by using a solid-solid separation technique.
La présente invention concerne un procédé de purification d'un métal en fusion contenant au moins un élément étranger. L'invention est caractérisée, d'une part en ce qu'on fait refroidir le métal en fusion jusqu'à une température eutectique de façon à obtenir simultanément des cristaux de métal purifié et des cristaux contenant au moins un élément étranger, et d'autre part en ce que, pour séparer des cristaux de métal purifié certains au moins des cristaux contenant au moins un élément étranger on a recours à une technique de séparation solide-solide.
Aleris Switzerland Gmbh
Corus Technology Bv
Ridout & Maybee Llp
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