Process and apparatus for automatically controlling slag...

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

C - Chemistry, Metallurgy

21

C

C21C 7/076 (2006.01) B22D 27/00 (2006.01) C21D 11/00 (2006.01) F27D 19/00 (2006.01) F27D 21/00 (2006.01)

Patent

CA 2497730

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.

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