PROCESS AND APPARATUS FOR AUTOMATICALLY CONTROLLING SLAG FOAMING

摘要

A metal alloy, such as steel, is manufactured in an electric arc furnac e system equipped with at least one sensor, at least one a controller comprisi ng a logic program and a variable valve in fluid communication with the furnace a nd a material source. The nature and quality of the slag formed over a molten met al 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.