A Holistic CFD Approach for Standard and Shaft-Type Electric Arc Furnaces
(Room 208A)
09 May 17
10:30 AM
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11:00 AM
Tracks:
Shaft Furnace Technology
Although the fluid-dynamic and thermodynamic phenomena during the different steps in an EAF are qualitatively known, some of these effects may cause process problems. Nowadays, CFD is able to provide a detailed insight into the EAF process. SMS group has developed a holistic CFD EAF model (3D, multi-phase, non-isothermal, transient) based on ANSYS FLUENT 17.0. The numerical model covers different aspects, such as: (a) blowing of oxygen through several injectors (supersonic) and a door lance (subsonic), (b) movement of melt, slag and furnace gas during flat-bath operation, (c) energy transfer of the electric arcs into the melt and onto the furnace walls, and (d) furnace wall load and CO post-combustion inside the furnace domain. This paper describes the CFD model and focuses on results for a 120-t AC EAF and a 140-t DC shaft-type furnace.