Process and apparatus for automatically controlling slag...

Details Process and apparatus for automatically controlling slag... Process and apparatus for automatically controlling slag...

H - Electricity

05

B

H05B 11/00 (2006.01) C21C 5/52 (2006.01) C21C 5/54 (2006.01) F27B 3/28 (2006.01) F27D 17/00 (2006.01) F27D 19/00 (2006.01)

Patent

CA 2402860

A metal alloy, such as steel, is manufactured in an electric arc furnace system equipped with at least one sensor, at least one a controller comprising a logic program and a variable valve in fluid communication with the furnace and a material source. The nature and quality of the slag formed over a molten metal during the manufacture of steel is dynamically controlled by continuously adjusting the addition of one or more material to the arc furnace through the variable valve. Embodiments include foaming the slag during the steelmaking process by injecting carbon into the arc furnace continuously and variably over a flow rate of about 25 lbs/min to about 200 lbs/min.

Dans la présente invention, un alliage métallique tel que de l'acier est fabriqué dans un système de four à arc électrique comprenant au moins un capteur (20), au moins une unité de commande (24) comprenant un programme logique et un clapet variable (18) qui communique par le fluide avec le four et une source (16) de matière chargée. La nature et la qualité du laitier formé sur un métal fondu pendant la fabrication de l'acier dans le four est surveillée/contrôlée de manière dynamique au moyen de l'ajustement continu de l'ajout d'au moins une matière dans la four à arc par l'intermédiaire du clapet réglable (18). Le laitier est expansé pendant le processus de fabrication d'acier par injection de carbone dans le four à arc de manière continue et variable sur une plage de débits comprise entre 25 lbs/min et environ 200 lbs/min.

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