Improved molten metal charge well

C - Chemistry – Metallurgy – 22 – B

Patent

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Details

C22B 7/00 (2006.01) C22B 9/16 (2006.01) C22B 21/06 (2006.01) F27B 3/18 (2006.01) F27D 3/14 (2006.01) F27D 3/16 (2006.01)

Patent

CA 2242906

In a charge well (C) for adding scrap metal pieces or particles to a molten metal bath, a stationary diverter (20) is provided in the charge well (C) for diverting the circular flow of molten metal, caused by orientation of the inlet port (14), in a downward direction, thereby creating a downward flow of molten metal which results in quick and efficient submergence of incoming lightweight scrap metal pieces or particles. Preferably, the diverter (20) includes a leading edge (22) which extends in a generally radial direction within the charge well (C) and a flat top (24) which tapers from the leading edge (22) to a point or narrowed trailing edge. A downward curver surface (28) extends from the leading edge (22) to facilitate the downward flow of molten metal.

Dans un puits de chargement (C), par lequel on ajoute des pièces ou des particules de ferraille à un bain de métal en fusion, est ménagé un élément de dérivation fixe (20) servant à faire dévier le flux circulaire de métal en fusion, formé par l'orientation de l'orifice d'admission (14), dans un sens descendant, ce qui crée un flux descendant de métal en fusion qui entraîne une immersion rapide et efficace des pièces ou particules de ferraille entrantes et légères. De préférence, l'élément de dérivation (20) comprend un bord d'attaque (22) qui s'étend dans un sens généralement radial dans le puits de chargement (C) et une partie supérieure plate (24) qui se rétrécit à partir du bord d'attaque (22) jusqu'à un point ou un bord arrière plus étroit. Une surface incurvée descendante (28) s'étend à partir du bord d'attaque (22) afin de faciliter l'écoulement vers le bas du métal en fusion.

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