oxides and pyrometallurgy - crct · 2010. 12. 4. · 10-28 10-24 10-16 10-20. fe-zn-o system 2010...
TRANSCRIPT
![Page 1: Oxides and Pyrometallurgy - CRCT · 2010. 12. 4. · 10-28 10-24 10-16 10-20. Fe-Zn-O System 2010 Oxides and Pyrometallurgy 33 Montreal. Fe-Zn-O System 2010 Oxides and Pyrometallurgy](https://reader035.vdocuments.site/reader035/viewer/2022071410/61043e8c006648271d78c33c/html5/thumbnails/1.jpg)
Oxides and Pyrometallurgy
- Copper Extraction from Sulfide Concentrates
- Using Equilib Program
• Selection of databases
• Phase selection
• ?Slag and ?Monoxide
• Transition calculation
2010MontrealOxides and Pyrometallurgy 1
• Transition calculation
• Export of results to Excel and plotting
- Phase Diagrams of Oxide Systems
• In equilibrium with metals
• At fixed or variable oxygen pressure
• Being on a join
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Copper Extraction from Sulfide Concentrates
Copper SulfideConcentrate SMELTING
Blast FurnaceReverberatory Flash
MitsubishiNoranda
Matte
Slag Discardor Treatment
25-30% Cu28-34% Fe28-34% S2-6% SiO2
Small amount of Pb, Zn, Ni, Ca, etc.
~1250oCP(O2) = 10-9-10-11
atmP(S2) = 10-2 atm
Slag
0.2-2% Cu0.2-1.3% S
40-73% Cu
ROASTING
2010MontrealOxides and Pyrometallurgy 2
CONVERTING
Blister Copper
Matte
Slag
or Treatment
~1250oCP(O2) = 10-6-10-9 atmP(S2) = 10-6 -10-7 atm
40-73% Cu30-6% Fe30-20% S2-8% Cu
25% SiO2
SlagCleaning
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Direct Smelting: Matte/Slag/Cu equilibrium- Can all three phases Matte/Slag/Cu be in equilibriu m?
- Operating variables:
• Temperature
• Oxygen pressure
• Fe/SiO2 ratio in the Slag
• Amount of CaO in the Slag
- Subjects to examine:
2010MontrealOxides and Pyrometallurgy 3
• Losses of Cu into Slag
• Distribution of minor elements, Pb and Zn, among Matte, Slag and Cu
- Chemical system: Cu-Fe-Si-O-S + Ca-Pb-Zn
- Does this task make sense?
- At T=const there are 4-2=2 degrees of freedom => fix P(O2), vary Fe/SiO2
- Study the effect of CaO at constant amount of CaO in the Slag
- Pb(Slag)/Pb(Cu) will approach a constant as the amount of Pb approaches zero
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Fe-Cu-O-S System
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Cu-S System
[79Mou]
[76Bal]2 Liquids [79Jud]
[51Sch]
[54Sud]
[90Mas]
[92Gla]
[84Nie]
[72Coo]
[66Ros]
[77Pot]
[60Weh]
[60Joh]
[47Jen]
T ( °° °°
C)
1000
1200
1400
1600
1800
2000
2200
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[79Mou]
fcc + Digenite
[47Jen]
fcc + Chalcocite I
fcc + Chalcocite II
Digenite + Liquid
Covellite + Liquid
Mole fraction S0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
0
200
400
600
800
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Selection of DatabasesFactSage 6.1 - Summary of Databases
Compound Databases :
Coupled Compound & Solution Databases :
Package:
Other databases :
Overview of databases
FACT53 - FACT 5.3 compound database: Gaseous speciesSGPS - SGTE pure substances database
FToxid - oxide database for slags, glasses, ceramics, refractories Slag, OxidesFTsalt - salt database FThall - Hall alumium database FThelg - aqueous (Helgeson) database
FTmisc - miscealleneous database for sulfides, alloys, etc. Matte, Sulfides, Liquid metalsFTpulp - pulp and paper database (and corrosion and combustion)
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Other databases :
Databases:
Databases :
Other Databases:
FTlite - light metal database (formerly FSlite) Metal phases
FScopp - copper alloy databaseFSlead - lead alloy database
FSstel - steel database Metal phasesFSupsi - ultrapure silicon database
SGnobl - noble metal database (formerly FSnobl) SGnucl - nuclear database
SGTE(2007) - alloy database (formerly SGTE (2004)) Metal phasesSGsold - solders database BINARY - (2004) free alloy database
TDNucl - Thermodata nuclear database
VV
V
V
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FTmisc - FACT miscellaneous databases
- the system S-Fe-Ni-Co-Cr :
Liquid sulfide [FTmisc-MAT2] – from pure metal to pure sulfur
Solid sulfide phases
- the matte smelting system S-Cu-Fe-Ni-Co-Pb-Zn-As :
Liquid matte [FTmisc-MATT] – liquid sulfide, does not extend to pure metal.
It is designed for calculation of matte / slag / metal equilibria
Consistent with FToxid-SLAG, FTmisc-CuLQ and FTmisc-PbLQ
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It is not consistent with solid sulfide phases
- Liquid copper or speiss [FTmisc-CuLQ] – Cu-Pb-Zn-As-Fe-Ni-Au-S-O
- Liquid Fe [FTmisc-FeLQ] with dilute solutes Al, B, Bi, C, Ca, Ce, Co, Cr, Mg, Mn, Mo, N, Nb, Ni, O, P, Pb, S, Sb, Si, Te, Ti, V, W, Zn, Zr
- Liquid Pb [FTmisc-PbLQ] with dilute solues Ag, As, Au, Bi, Cu, Fe, Na, O, S, Sb, Sn, Zn
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Selection of Databases
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Input for Having Matte + Slag + Cu in Equilibrium
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Fixing Oxygen Pressure
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Selection of Stoichiometric Solids from FToxid
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Selection of Solutions
ASlag or ?Slag
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ASlag or ?Slag?MonoxideDormant phases
Calculatetransitions
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Transitions
Check that the Matte and Cu phases contain the righ t amount of sulphur
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A Series of Calculations
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Output Results in Excel
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Select Species for Output
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Fe-Zn-Si-O System
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Cu losses to Slag
Wt%-Cu_FToxid-SLAGA#1
3.6
3.65
3.7
3.75W
t% C
u in
SLA
G
lgP(O 2)=-8
2010MontrealOxides and Pyrometallurgy 18
3.45
3.5
3.55
3.6
1 1.5 2 2.5 3 3.5 4
Fe/SiO2
Wt%
Cu
in S
LAG
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Distribution of Pb between Slag and Cu
Pb(Sl/Cu)
0.8
1
1.2
1.4W
t% P
b(S
lag)
/Wt%
Pb(
Cu)
lgP(O 2)=-8
2010MontrealOxides and Pyrometallurgy 19
0
0.2
0.4
0.6
1 1.5 2 2.5 3 3.5 4
Fe/SiO2
Wt%
Pb(
Sla
g)/W
t% P
b(C
u)
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Distribution of Pb between Slag and Matte
Pb(Sl/Mt)
3
4
5
6W
t% P
b(S
lag)
/Wt%
Pb(
Mat
te)
lgP(O 2)=-8
2010MontrealOxides and Pyrometallurgy 20
0
1
2
3
1 1.5 2 2.5 3 3.5 4
Fe/SiO2
Wt%
Pb(
Sla
g)/W
t% P
b(M
atte
)
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Wt%-Cu_FToxid-SLAGA#1
6.65
6.7
6.75
6.8
6.85
6.9W
t% C
u in
SLA
G
Cu losses to Slag
lgP(O 2)=-7
2010MontrealOxides and Pyrometallurgy 21
6.35
6.4
6.45
6.5
6.55
6.6
1 1.2 1.4 1.6 1.8 2 2.2
Fe/SiO2
Wt%
Cu
in S
LAG
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Pb(Sl/Cu)
2.5
3
3.5
4
4.5
5
Wt%
Pb(
Sla
g)/W
t% P
b(C
u)
Distribution of Pb between Slag and Cu
lgP(O 2)=-7
2010MontrealOxides and Pyrometallurgy 22
0
0.5
1
1.5
2
2.5
1 1.2 1.4 1.6 1.8 2 2.2
Fe/SiO2
Wt%
Pb(
Sla
g)/W
t% P
b(C
u)
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Pb(Sl/Mt)
10
12
14
16
18
Wt%
Pb(
Sla
g)/W
t% P
b(M
atte
)
Distribution of Pb between Slag and Matte
lgP(O 2)=-7
2010MontrealOxides and Pyrometallurgy 23
0
2
4
6
8
1 1.2 1.4 1.6 1.8 2 2.2
Fe/SiO2
Wt%
Pb(
Sla
g)/W
t% P
b(M
atte
)
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Fe-Zn-Si-O System
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Fe-O System
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Fe-O System
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Fe-O System
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Fe-O System
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Fe-O System
Fe-LIQUID + ASlag-liq
Fe(s) + ASlag-liq
Fe(s2) + AMonoxide
ASlag-liqASlag-liq + gas_ideal
ASpinel + gas_ideal
AM
ono
xid
e
AS
pin
el +
Fe 2
O3(
s)
AS
pin
el +
AM
ono
xid
e
1 atmT
(C)
1200
1400
1600
1800
2010MontrealOxides and Pyrometallurgy 29
Fe(s) + AMonoxide
Fe(s) + ASpinel
Fe2O3(s) + gas_ideal
AS
pin
el +
Fe
AS
pin
el +
AM
ono
xid
e
mole O/(Fe+O)
T(C
)
0 0.2 0.4 0.6 0.8 1
400
600
800
1000
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Fe-O System
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Fe-O System
ASlag-liq + gas_ideal
Fe(s2) + AMonoxide
Fe(s) + ASlag-liq
Fe-LIQUID + ASlag-liq ASlag-liq
AM
onox
ide
AS
pine
l
Fe 2
O3(s
)
P=10000 atm
T(C
)
1200
1400
1600
1800
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Fe2O3(s) + gas_ideal
Fe(s) + ASpinel
Fe(s) + AMonoxide
AS
pine
l
Fe
mole O/(Fe+O)
T(C
)
0 0.2 0.4 0.6 0.8 1
400
600
800
1000
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Fe-O System
T, K
1200
1300
1400
1500
1600
1700
1800
1900
2000
Magnetite
Hem
atite
Wustite
SlagFe-liq+Slag
Fe-bcc+Slag
Fe-fcc+Slag
Fe-fcc+Wustite
1702
1801
1667
1644
1818
1863
[31Pfe][35Gre]
10-2
10-4
10-6
10-8
1
10-4
10-6
1
10-2
10-10
10-12
10-6
10-8
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FeO-Fe2O3 phase diagram: experimental points and calculated lines. Dashed lines are oxygen isobars (atm).
Weight % Fe2O3
0 10 20 30 40 50 60 70 80 90 100
800
900
1000
1100
1200
FeO Fe2O3
827
[45Dar]
[57Egn]
[66Ack][65Val]
[69Lyk][70Cam][74Tou][80Tak]
[46Dar]
10-12
10-8
10-10
10-16
10-28
10-24
10-16
10-20
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Fe-Zn-O System
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Fe-Zn-O System
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Fe-Zn-O System
2010MontrealOxides and Pyrometallurgy 35
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Fe-Zn-O System
0.6
0.7
0.8
0.9 0.1
0.2
0.3
0.4
O
Zincite
ASlag-liq
ASpinel
Zincite+O2
ASpinel+O2
1500oC
2010MontrealOxides and Pyrometallurgy 36
0.1
0.2
0.3
0.4
0.5
0.10.20.30.40.50.60.70.80.9
0.5
0.6
0.7
0.8
0.9
Fe Znmole fraction
Fe-LIQUID + Zincite
ASlag-liq
ASlag-liq + BCC_A2
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FeO-ZnO System (oxide phases only)
2010MontrealOxides and Pyrometallurgy 37
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FeO-ZnO System (oxide phases only)
2010MontrealOxides and Pyrometallurgy 38
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FeO-ZnO System (oxide phases only)
2010MontrealOxides and Pyrometallurgy 39
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FeO-ZnO System (oxide phases only)
ASlag-liq
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 40
AMonoxide Zincite
mole ZnO/(FeO+ZnO)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
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FeO-ZnO System (oxide phases only)
Phases do not have any Fe 2O3
2010MontrealOxides and Pyrometallurgy 41
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FeO-ZnO System (oxide phases and pure Fe)
2010MontrealOxides and Pyrometallurgy 42
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FeO-ZnO System (oxide phases and pure Fe)
2010MontrealOxides and Pyrometallurgy 43
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FeO-ZnO System (oxide phases and pure Fe)
ASlag-liq + Fe(liq)
ASlag-liq + Fe(s)
Zincite + Fe(s)
Zincite + Fe(liq)
T(C
)
1400
1600
1800
2000
Convergency problems, missing lines
2010MontrealOxides and Pyrometallurgy 44
AMonoxide ZinciteAMonoxide + Zincite + Fe(s2)
mole ZnO/(FeO+ZnO)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 45
Oxide phases
Metal phases from FSstel
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 46
Oxide phases
Metal phases from FSstel
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 47
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FeO-ZnO System in Equilibrium with Metals
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 48
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Metals vs FeO-ZnO
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
ASlag-liq
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 49
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
AMonoxide Zincite
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 50
Oxide phases
Metal phases from SGTE
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 51
Oxide phases
Metal phases from SGTE
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FeO-ZnO System in Equilibrium with Metals
ASlag-liq + BCC_A2
ASlag-liq + LIQUID
LIQUID + Zincite
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 52
AMonoxide + FCC_A1
AMonoxide + BCC_A2BCC_A2 + Zincite
FCC_A1 + Zincite
AMonoxide + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Metals (FSstel vs SGTE)
ASlag-liq + BCC_A2
ASlag-liq + LIQUID
LIQUID + Zincite
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 53
AMonoxide + FCC_A1
AMonoxide + BCC_A2BCC_A2 + Zincite
FCC_A1 + Zincite
AMonoxide + BCC_A2
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 54
Oxide phases
Stoichiometric metal phases from Fact53
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 55
Oxide phases
Stoichiometric metal phases from Fact53
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FeO-ZnO System in Equilibrium with Metals
Zincite + Fe(liq)
Zincite + Fe(s)ASlag-liq + Fe(s)
ASlag-liq + Fe(liq)
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 56
Zincite + Fe(s2)
Zincite + Fe(s)AMonoxide + Fe(s)
AMonoxide + Fe(s2)
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Metals: FSstel vs pure Fe
Zincite + Fe(liq)
Zincite + Fe(s)ASlag-liq + Fe(s)
ASlag-liq + Fe(liq)ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 57
Zincite + Fe(s2)
Zincite + Fe(s)AMonoxide + Fe(s)
AMonoxide + Fe(s2)
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 58
Oxide phases
Only one metal phase, Fe(s), from Fact53
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FeO-ZnO System in Equilibrium with Metals
ASlag-liq + Fe(s)
Zincite + Fe(s)
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 59
AMonoxide + Fe(s)
Zincite + Fe(s)
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Metals: FSstel vs Fe(s)
ASlag-liq + Fe(s)
Zincite + Fe(s)
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 60
AMonoxide + Fe(s)
Zincite + Fe(s)
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Fe(s) vs FeO-ZnO
ASlag-liq + Fe(s)
Zincite + Fe(s)
ASlag-liq
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 61
AMonoxide + Fe(s)
Zincite + Fe(s)
AMonoxide Zincite
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 62
Oxide phases
Pure Fe and Zn (sol. and liq.) from Fact53
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FeO-ZnO System in Equilibrium with Metals
ASlag-liq + Zn(liq)
ASlag-liq + Fe(liq)
Zincite + Zn(liq)
ASlag-liq + Fe(s)Zincite + Fe(s)
ASlag-liq + Zincite + Fe(liq)
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 63
AMonoxide + Fe(s2)
AMonoxide + Fe(s)
Zincite + Fe(s2)
Zincite + Fe(s)
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Fe & Zn (s,l) vs FSstel
Zincite + Fe(s)
Zincite + Zn(liq)
ASlag-liq + Fe(s)
ASlag-liq + Fe(liq)
ASlag-liq + Zn(liq)
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 64
AMonoxide + Fe(s2)
AMonoxide + Fe(s) Zincite + Fe(s)
Zincite + Fe(s2)
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals and Gas
2010MontrealOxides and Pyrometallurgy 65
Oxide phases
Metal phases from FSstel
Gaseous species from Fact53
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FeO-ZnO System in Equilibrium with Metals and Gas
2010MontrealOxides and Pyrometallurgy 66
Oxide phases, all Metal phases from FSstel
Gaseous species only from Fact53
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FeO-ZnO System in Equilibrium with Metals and Gas
2010MontrealOxides and Pyrometallurgy 67
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FeO-ZnO System in Equilibrium with Metals and Gas
ASlag-liq + gas_ideal
ASlag-liq + BCC_A2
ASlag-liq + Fe-LIQUID
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 68
AMonoxide + FCC(c,n)
AMonoxide + BCC_A2 BCC_A2 + Zincite
Zincite + FCC(c,n)
gas_ideal + ZinciteAMonoxide + gas_ideal
ASlag-liq + FCC(c,n)
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO System in Equilibrium with Metals and Gas
ASlag-liq + gas_ideal
ASlag-liq + BCC_A2
ASlag-liq + Fe-LIQUID
ASlag-liq + Fe-LIQUID
Zincite + Fe-LIQUID
ASlag-liq + BCC_A2
FeO - ZnO - Femole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1400
1600
1800
2000
Red and blue curves are calculated without gas
2010MontrealOxides and Pyrometallurgy 69
AMonoxide + FCC(c,n)
AMonoxide + BCC_A2 BCC_A2 + Zincite
Zincite + FCC(c,n)
gas_ideal + Zincite
AMonoxide + gas_ideal
ASlag-liq + FCC(c,n)
Zincite + FCC(c,n)
AMonoxide + FCC(c,n)
AMonoxide+BCC_A2
AMonoxide+BCC_A2
Zincite + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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FeO-ZnO in Equilibrium with Metals at P=100 atm
2010MontrealOxides and Pyrometallurgy 70
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FeO-ZnO in Equilibrium with Metals at P=100 atm
ASlag-liq + BCC_A2
ASlag-liq + Fe-LIQUID
ASlag-liq + gas_ideal
gas_ideal + Zincite
Fe-LIQUID + Zincite
FeO - ZnO - FeP=100 atm, mole Fe/(FeO+ZnO+Fe) = 0.001
T(C
)
1600
1800
2000
2010MontrealOxides and Pyrometallurgy 71
AMonoxide + BCC_A2
AMonoxide + FCC(c,n)
BCC_A2 + Zincite
Zincite + FCC(c,n)
AMonoxide + BCC_A2
mole ZnO/(FeO+ZnO+Fe)
T(C
)
0 0.2 0.4 0.6 0.8 1
800
1000
1200
1400
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Fe-Zn-O System
0.6
0.7
0.8
0.9 0.1
0.2
0.3
0.4
O
Zincite
ASlag-liq
ASpinel
Zincite+O2
ASpinel+O2
1500oC
2010MontrealOxides and Pyrometallurgy 72
0.1
0.2
0.3
0.4
0.5
0.10.20.30.40.50.60.70.80.9
0.5
0.6
0.7
0.8
0.9
Fe Znmole fraction
Fe-LIQUID + Zincite
ASlag-liq
ASlag-liq + BCC_A2
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Oxide Phase Diagrams under Reducing Conditions
- Metal phases must be selected
- Step a bit off an oxide section towards metals
- FSstel is needed to see the right metal phases in equilibrium
2010MontrealOxides and Pyrometallurgy 73
- Metal phases often have only a minor effect on oxide phase boundaries
- If you do not have FSstel or SGTE database for meta l phases, select metals from Fact53
- Do not forget the gas phase
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FeO-CoO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 74
Oxide phases, Gaseous species
Metal phases from FSstel
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FeO-CoO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 75
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FeO-CoO System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 76
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FeO-CoO System in Equilibrium with Metals
BCC_A2 + AMonoxide
FCC(c,n) + AMonoxide
FeO - CoO - Femole Fe/(FeO+CoO) = 0.001
T(C
)
700
900
1100
1300
2010MontrealOxides and Pyrometallurgy 77
BCC_A2 + ASpinel
FCC(c,n) + ASpinel
HCP(c,n) + ASpinel
HCP(c,n) + ASpinel + AMonoxide
FCC(c,n) + ASpinel + AMonoxide
mole CoO/(FeO+CoO)
T(C
)
0 0.2 0.4 0.6 0.8 1100
300
500
700
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FeO-CoO System in Equilibrium with Pure Fe and Co
2010MontrealOxides and Pyrometallurgy 78
Oxide phases, Gaseous species
Metal phases from Fact53
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FeO-CoO System in Equilibrium with Pure Fe and Co
2010MontrealOxides and Pyrometallurgy 79
Oxide phases
Fe and Co from Fact53
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FeO-CoO System in Equilibrium with Pure Fe and Co
AMonoxide + Co(s2)
AMonoxide + Fe(s2) + Co(s2)
AMonoxide + Fe(s2)
AMonoxide + Fe(s) + Co(s2)
FeO - CoO - Femole Fe/(FeO+CoO) = 0.001
T(C
)
700
900
1100
1300
2010MontrealOxides and Pyrometallurgy 80
ASpinel + AMonoxide + Co(s)
ASpinel + AMonoxide + Co(s2)
ASpinel + Fe(s) + Co(s)
ASpinel + Fe(s) + Co(s2)
ASpinel + Co(s)
ASpinel + Co(s2)
mole CoO/(FeO+CoO)
T(C
)
0 0.2 0.4 0.6 0.8 1100
300
500
700
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FeO-CoO in Equilibrium with Fe and Co vs FSstel
AMonoxide + Fe(s2)
AMonoxide + Co(s2)
BCC_A2 + AMonoxide
FCC(c,n) + AMonoxide
FeO - CoO - Comole Co/(FeO+CoO) = 0.001
900
1100
1300
2010MontrealOxides and Pyrometallurgy 81
ASpinel + Fe(s) + Co(s)
ASpinel + Fe(s) + Co(s2)
ASpinel + Fe(s)
AMonoxide + Fe(s)
ASpinel + Co(s2)
ASpinel + Co(s)
AMonoxide + Co(s)
BCC_A2 + ASpinel
FCC(c,n) + ASpinel
HCP(c,n) + ASpinel
BCC_A2 + AMonoxide
HCP(c,n) + ASpinel + AMonoxide
FCC(c,n) + ASpinel + AMonoxide
mole CoO/(FeO+CoO)
T(C
)
0 0.2 0.4 0.6 0.8 1100
300
500
700
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FeO-CoO System in Equilibrium with Pure Co
AMonoxide + Co(s2)
FeO - CoO - Femole Fe/(FeO+CoO) = 0.001
T(C
)
700
900
1100
1300
2010MontrealOxides and Pyrometallurgy 82
ASpinel + Co(s)
ASpinel + Co(s2)
mole CoO/(FeO+CoO)
T(C
)
0 0.2 0.4 0.6 0.8 1100
300
500
700
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FeO-CoO System in Equilibrium with Pure Fe
AMonoxide + Fe(s)
AMonoxide + Fe(s2)
FeO - CoO - Femole Fe/(FeO+CoO) = 0.001
T(C
)
700
900
1100
1300
2010MontrealOxides and Pyrometallurgy 83
ASpinel + Fe(s)
AMonoxide + Fe(s)
mole CoO/(FeO+CoO)
T(C
)
0 0.2 0.4 0.6 0.8 1100
300
500
700
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Fe-Co-O System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 84
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Fe-Co-O System in Equilibrium with Metals
2010MontrealOxides and Pyrometallurgy 85
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Fe-Co-O System in Equilibrium with Metals
0.6
0.7
0.8
0.9 0.1
0.2
0.3
0.4
0.5
O
AS
pinel + AM
onoxide + BC
C_A
2
Fe2O3(s)AMonoxide
AMonoxide
ASpinel
700oC
2010MontrealOxides and Pyrometallurgy 86
0.1
0.2
0.3
0.4
0.5
0.10.20.30.40.50.60.70.80.9
0.5
0.6
0.7
0.8
0.9
Fe Comole fraction
BCC_A2 FCC(c,n)
AS
pinel + AM
onoxide + BC
C_A
2
ASpinel + AMonoxide + FCC(c,n)ASpinel + FCC(c,n) + BCC_A2
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Fe-Co-O System in Equilibrium with Pure Metals
2010MontrealOxides and Pyrometallurgy 87
Oxide phases
Fe and Co from Fact53
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Fe-Co-O System in Equilibrium with Pure Metals
0.6
0.7
0.8
0.9 0.1
0.2
0.3
0.4
O
ASpinel + gas_ideal
AMonoxideAMonoxide
ASpinel
Fe2O3
700oC
2010MontrealOxides and Pyrometallurgy 88
0.1
0.2
0.3
0.4
0.5
0.10.20.30.40.50.60.70.80.9
0.5
0.6
0.7
0.8
0.9
Fe Comole fraction
Co(s2) + AMonoxide + Fe(s)
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Fe2O3-Cr2O3 System in Equilibrium with Air
2010MontrealOxides and Pyrometallurgy 89
Gas phase must be selected even though it does not form
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Fe2O3-Cr2O3 System in Equilibrium with Air
2010MontrealOxides and Pyrometallurgy 90
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Fe2O3-Cr2O3 System in Equilibrium with Air
ASlag-liq
Fe2O3 - Cr2O3 - O2p(O2) = 0.21 atm
T(C
)
2100
2300
2500
2010MontrealOxides and Pyrometallurgy 91
ASpinel
M2O3(corundum)
mole Cr2O3/(Fe2O3+Cr2O3)
T(C
)
0 0.2 0.4 0.6 0.8 11300
1500
1700
1900
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MgO-Cr2O3 System at P(O2)=10-5.5 atm
2010MontrealOxides and Pyrometallurgy 92
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MgO-Cr2O3 System at P(O2)=10-5.5 atm
2010MontrealOxides and Pyrometallurgy 93
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MgO-Cr2O3 System at P(O2)=10-5.5 atm
ASpinel
AM
onox
ide
ASlag-liq
gas_ideal
ASlag-liq
MgO - Cr 2O3 - O2p(O2) = 10
-5.5 atm
T(C
)
2200
2600
3000
2010MontrealOxides and Pyrometallurgy 94
ASpinel
AM
onox
ide
ASpinel + Cr2O3(s)
mole Cr2O3/(MgO+Cr2O3)
T(C
)
0 0.2 0.4 0.6 0.8 11000
1400
1800
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MgO-Cr 2O3 System at P(O2)=10-5.5 atm
2010MontrealOxides and Pyrometallurgy 95
Gas phase must be selected, but it can be made dormant
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MgO-Cr2O3 System at P(O2)=10-5.5 atm, Dormant Gas
AM
onox
ide
ASpinel
ASlag-liq
MgO - Cr 2O3 - O2p(O2) = 10
-5.5 atm
T(C
)
2200
2600
3000
2010MontrealOxides and Pyrometallurgy 96
AM
onox
ide
ASpinel
ASpinel + Cr2O3(s)
mole Cr2O3/(MgO+Cr2O3)
T(C
)
0 0.2 0.4 0.6 0.8 11000
1400
1800
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Fe-Cr-O System at 1300 °C
2010MontrealOxides and Pyrometallurgy 97
Oxide phases
Metal phases from FSstel
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Fe-Cr-O System at 1300 °C
2010MontrealOxides and Pyrometallurgy 98
Oxide phases
Nothing from Fact53 and from FSstel
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Fe-Cr-O System at 1300 °C
2010MontrealOxides and Pyrometallurgy 99
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Fe-Cr-O System at 1300 °C
ASpinel
M2O3(corundum)
AMonoxide
Fe - Cr - O21300
oC
2)) (
atm
)
-10
-8
-6
-4
-2
0
2010MontrealOxides and Pyrometallurgy 100
BCC_A2
FC
C(c
,n)
FCC(c,n) + ASpinel
FCC(c,n) + M2O3(corundum)
BCC_A2 + M2O3(corundum)
mole Cr/(Fe+Cr)
log 1
0(p(
O2
0 0.2 0.4 0.6 0.8 1-20
-18
-16
-14
-12
-10