Improved metallurgical vessel and method of using the same

B - Operations – Transporting – 22 – D

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B22D 41/08 (2006.01) F27B 3/12 (2006.01) F27D 1/04 (2006.01)

Patent

CA 2238855

A metallurgical vessel having a sloping bottom surface which includes a tapered upper surface terminating at a vertical surface, wherein the vertical surface terminates at a lower tapered surface for forming a pocket block reservoir such that the pocket block reservoir has a volume of less than or equal to about five percent of the total volume of the metallurgical vessel is disclosed. This pocket block reservoir provides an area for the accumulation of residue metal and slag when the metallurgical vessel is discharged, therefore resulting in a significant increase in the quantity of usable pure metal discharged from the metallurgical vessel and thus contributing to improved volumetric efficiency of the vessel. A method for improving the yield efficiency in the production of metal employing this vessel is also provided.

Cette invention concerne un récipient métallurgique à fond en pente présentant une surface inclinée qui se termine à la jonction avec une surface verticale, elle-même se terminant à la jonction avec une surface inférieure aussi en pente, de manière à former dans la partie la plus basse du fond une cavité ayant un volume d'environ cinq pour cent ou moins du volume total du récipient. Cette cavité sert à retenir le métal résiduel et les crasses lors du vidage du récipient, de sorte que la perte de métal pur utilisable est minimale, ce qui représente une meilleure exploitation du volume du récipient. Cette invention concerne également un procédé permettant d'augmenter le rendement d'une opération métallurgique mettant en oeuvre ce récipient.

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