F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 27/00 (2010.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01) C04B 41/89 (2006.01) C21C 1/06 (2006.01) C21C 5/44 (2006.01) C21C 5/46 (2006.01) C22B 9/05 (2006.01) C22B 11/06 (2006.01) C22B 21/06 (2006.01) C25C 3/08 (2006.01) F27D 1/16 (2006.01) F27D 1/00 (2006.01)
Patent
CA 2369431
An apparatus for treating, in particular purifying or degassing, molten metal (40), comprising a component (10) exposable to molten metal to be treated and means (13) for imparting a rotary motion to the molten metal (40) about a substantially vertical axis. The apparatus is so arranged that during use at least part of a wear-exposed surface of the component (10) is temporarily or permanently in contact with molten metal (40), the contacting molten metal being in motion relative to the wear-exposed surface. The wear-exposed surface is coated with a slurry-applied protective coating (18A,18B) of refractory material in a heat stable binder, in particular an inorganic colloidal and/or polymeric binder, protecting the wear-exposed surface against erosion, oxidation and corrosion.
L'invention concerne un appareil conçu pour traiter, plus précisément pour purifier ou dégazer, du métal fondu(40), qui comporte un composant (10) exposé au métal fondu à traiter et un dispositif (13) destiné à imprimer audit métal (40)un mouvement de rotation autour d'un axe sensiblement vertical. L'appareil, ainsi conçu durant l'utilisation d'au moins une partie de la surface exposée à l'usure du composant, est temporairement, ou de façon permanente, en contact avec le métal fondu (40), ledit métal contigu étant en mouvement par rapport à la surface exposée à l'usure. Cette dernière est protégée par un revêtement (18A, 18B) de matériau réfractaire en suspension comportant un liant stable à la chaleur, en particulier un liant colloïdal et/ou polymère inorganique. La surface exposée à l'usure se trouve ainsi protégée contre l'érosion, l'oxydation et la corrosion.
Duruz Jean-Jacques
Holz K. Jacqueline
Gowling Lafleur Henderson Llp
Moltech Invent S.a.
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