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FactSage Steelmaking Consortium Project
Overview
Department of Materials Science and Engineering
Professor In-Ho Jung
Tel : 82-2-880-7077
E-mail: [email protected]
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Slag/Refractory/
Inclusions/Flux/
Steel
Slag:Viscosity,
Molar volume,
Thermal
Conductivity, etc.
Thermodynamic
database
Physical Property
database
Kinetic Process
Simulation models
(EERZ Concept)
- Secondary Refining Units
- Continuous Casting Process
Overall Goal of FactSage Steelmaking Consortium Project
(2009~2020)
Combining Thermodynamics
& Mass transfer based on
numerical analysis and plant
sampling data2
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2017-2
020
Steel database
High alloy steels with all common elements
(steelmaking, alloy design, metallic coating)R
E o
xy-s
ulfid
es,
Hig
h V
an
d T
io
xid
e s
lag
s
Addition of C, H into oxy-fluoride systems
SF
CA
s
Steelmaking Consortium project (2009 ~ 2020)
3
FactSage DatabaseOxide database (FToxid): CaO-
MgO-FeO-Fe2O3-Al2O3-SiO2-…
FSStel and FeLq databasae
P2O5(de-P process)
Na2O, K2O, Li2O, F, S
Oxy Fluoride system
(mold flux & refining slag)
Na
2 O-F
et O
, Mn
O,…
,
(refin
ing
, refra
cto
ry)
Ti oxides, ZrO2, B2O3
Tra
nsie
nt m
eta
l oxid
es
(Mn
, Cr, V
, Ti
ox
ide
s)
2014-2
017
2009-2
014
Steel database
(high Mn, Al, Si alloys)
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Steelmaking Consortium project (2009 ~ 2020)
4
Physical property database for molten slags
Process simulation: Steelmaking process
Viscosity
Molar volume
Electric conductivity
Y 2014
Solidification of slag
Continuous casting process: mold flux
RH degassor Basic Oxygen Furnace
LF
Injection Tundish
VTD
KR
Y 2010 Y 2020
RH degassor EAF
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Steelmaking Consortium Project (2017-2020)
5
Project-A: Thermodynamic database of oxide system:
(i) Expansion of Ti, V and Cr oxide systems. (continuation
from
previous consortium project)
- CaO-MgO-Al2O3-SiO2-FeO-Fe2O3-MnO-Na2O + Ti oxide (Ti3+,
Ti4+)
- CaO-MgO-Al2O3-SiO2-FeO-Fe2O3-MnO + Cr oxide (Cr2+, Cr3+,
Cr6+)
- CaO-MgO-Al2O3-SiO2-FeO-Fe2O3 + V oxide (V2+, 3+, 4+, 5+)
(ii) Development of rare earth oxy-sulfide systems.
- CaO-MgO-Al2O3-SiO2-RE2O3-RE2S3
(iii) Development of the database related to the iron ore
sintering
process.
- CaO-SiO2-FeO-Fe2O3-MgO-Al2O3 system + SFCA and SFCA-I.
(iv) Development of the database of the Mg-Al-Si-C-N-O
system
(v) Solubility of C and H in liquid slag and mold flux
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Steelmaking Consortium Project (2017-2020)
6
Project-B: Thermodynamic databases for metallic systems:
This is for the development of new steel database covering all
current and
future steel grades (low C, stainless steel, high alloy steel,
etc.) and even ferro-
alloys. In addition, Galvanizing bath database is going to be
expanded.
(i) Expansion to Stainless steels
- Ni, Cr, Ti, Mo, … (both 300 and 400 series).
(ii) Expansion to TRIP steels
- carbide and nitride ppts: (Ti,Nb,Zr,…)(C,N)
(iii) Expansion to Super steels
- BCC and FCC order/disorder phases: Al-Co-Cr-Fe-Ni-Ti
(iv) Galvanizing bath database
- Zn-Al-Fe-Si-Mg + Mn, Cr.
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Steelmaking Consortium Project (2017-2020)
7
Project-C: Physical properties database for oxide and
metallic systems.Molar volume of liquid slag system was
completed in 2015.
(i) Viscosity database for liquid slag- Revision of the
viscosity database of the Ti oxide system (Wan-Yi Kim)
- Addition of P2O5 systems(preliminary study done – insufficient
data available)
(ii) Thermal conductivity database of liquid slag- Silicate
system and oxyfluoride system
(iii) Molar volume and viscosity of liquid metal system- Molar
volume and viscosity of liquid metal
for both high alloy steels and galvanizing bath
(iv) Surface tension database for liquid metal system (tentative
project)
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Steelmaking Consortium Project (2017-2020)
8
Project-D: Development of a simple kinetic process
simulation model for the secondary steelmaking process
and continuous casting process.
Using the same FactSage macro simulation approach we have used
for other
process simulations, we will develop new models for the
Electrical Arc Furnace
(EAF) and Tundish, and we will continuously upgrade the RH
degassor and Vacuum
Tank Degassor (VTD) models. In 2019, we will begin to convert
the FactSage macro
model to a stand-alone software with a user-friendly interface
using ChemApp DLL.
Review and develop slag foaming model.
Develop and insert simplified ferro-alloy dissolution model in
process simulation.
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Steelmaking consortium project (2009~2020) – 2018 Annual
meeting, Seoul, Korea
