Abstract

A metallurgical treatment vessel comprises a multi-use, isostatically pressed, or vibrocast one-piece refractory vessel (1), comprising refractory sidewalls (2) and an integral refractory base (3), the vessel (1) being adapted, in use, to contain an induction heated melt, with a gas introduction device (4) connected to an external surface (5) of the refractory base (3), and with the granulometry of the refractory material of both the base (3) and sidewalls (2) being such that both are gas permeable, whereby gas introduced into the base (3) by the introduction device (4) percolates via interstitial routes into the base (3) and also from the base (3) into the sidewalls (4), whereby a gas emitting area is provided not only over the melt contacting surface (6) of the base (3), but also over the melt contacting inside surface (6A) of the sidewalls (2) of the vessel (1 ).

IPC Classes  ?

• F27B 14/04 - Crucible or pot furnacesTank furnaces adapted for treating the charge in vacuum or special atmosphere
• B22D 41/58 - Pouring-nozzles with gas injecting means
• C22B 9/05 - Refining by treating with gases, e.g. gas flushing
• B22D 1/00 - Treatment of fused masses in the ladle or the supply runners before casting