US 12,228,340 B2
Cold crucible
Kader Zaidat, Saint Martin d'Heres (FR); Christian Garnier, Eybens (FR); and Ghatfan Hasan, Saint Martin d'Heres (FR)
Assigned to INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE GRENOBLE ALPES, Saint Martin d'Heres (FR)
Appl. No. 17/429,228
Filed by INSTITUT POLYTECHNIQUE DE GRENOBLE, Grenoble (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); and UNIVERSITE GRENOBLE ALPES, Saint Martin d'Heres (FR)
PCT Filed Feb. 6, 2020, PCT No. PCT/EP2020/053046
§ 371(c)(1), (2) Date Aug. 6, 2021,
PCT Pub. No. WO2020/161264, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 1901243 (FR), filed on Feb. 7, 2019.
Prior Publication US 2022/0136771 A1, May 5, 2022
Int. Cl. F27B 14/10 (2006.01); C30B 35/00 (2006.01); H05B 6/24 (2006.01); H05B 6/42 (2006.01)
CPC F27B 14/10 (2013.01) [C30B 35/002 (2013.01); H05B 6/24 (2013.01); H05B 6/42 (2013.01); F27B 2014/108 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A cold crucible comprising: a cage called cold cage comprising at least one sector made of material that is a conductor of electricity and into which a charge to be melted is to be introduced, and a cooling device comprising a heat-transfer fluid, the cooling device being configured to cool each sector of the cold cage, wherein the cold crucible further comprises at least one generation device for generating an electromagnetic field, each generation device being housed inside said at least one sector of the cold cage of the cold crucible, and wherein the electromagnetic field generated by the at least one generation device is such that it has a density substantially greater than 0.02 T, at a distance substantially greater than 2 mm from an edge of the at least one generation device oriented towards the inside of the cold cage.