Different hot metal charging methods for EAFs were presented, with preference given to the sidewall launder method.From available literature 25 to 30 percent hot metal in the charge appeared optimum. It was determined that a decarburization rate limit of 0.1 percent C per minute was the limiting factor regarding hot metal usage. Based or the authors' experience with EOF operations - where decarburization rates of 0.25 percent C per minute are achieved-the EAF geometry mus be specifically designed for higher amounts o hot metal in the charge to obtain optimum productivity and economic performance. In addition, oxygen must be supplied and distributed evenly around the EAF shell circumference.Substantial savings can be achieved when hot metal is used as a scrap substitute in EAF operations, even with low scrap prices.
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