Continuous Charging and Preheating of Prereduced Iron Ore.
Tress-JE; Hunter-WL; Stickney-WA
NTIS: PB 240 837 :10 pages
The Bureau of Mines has developed a process to utilize waste heat from electric arc steelmaking furnace gases to preheat the ferrous material charged to the furnace. Four heat exchangers were designed, tested, and operated successfully on 1-ton electric arc furnaces. Briquets and pellets were charged continuously, both countercurrent to the hot furnace offgases and at ambient temperatures. A comparison of the electrical energy consumed in each situation showed that preheating can lower energy requirements as much as 15.6 percent.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 240 837