Lecture 19: Emergi ng Steelmaking Techno logies
Contents:
Basis
Energy Opt imizing Furnace
CONARC
Key words: EOF, CONARC
Basis:
• To develop ec ological balance techno logy. Such a techno logy wo uld re quire proc essing th e ra w
mate rials such th at liq uid pro ducts are discharged a t the e nvironmental tem perature and waste
products are discha rged in th eir harmless st a tes . Th is requires integrating t he c onc ep t of
recovery, reuse and recirculation with in the proces s envir onment .
• To develop a process which is flexible to use varying proportion of metallic materials depe nding
on their availability. Con verter steelmaking is b ased on ho t meta l.
• To develop te chnologies wh ich are n ot elec tric energy d ependent. E le c t r ic s t ee l m ak i n g i s
depe ndent of availab ility of cheap electric powe r, tho ugh dev elopments are made to use
chemical energy.
In t he abo ve conc ept, two tech nologies are wor thwhile to mention: Energy optimizing f urnace (EOF) and
CONARC (Co nverter + Arc furnace)
En ergy opt imizin g furn ace (E OF)
Figure 19.1 is a schematic sketch of an energy opt imizing furna ce (EO F). EOF is a comb ination of three
inde pendent, interco nnected react ors, n amely f urnace to pro duce steel, p reheater to heat the s crap and
a recuperator to rcover was te heat and to reus e by heating oxygen .
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