Change of the Chemical and Mineralogical Composition of the Slag during Oxygen Blowing in the Oxygen Converter Process
Abstract
:1. Introduction
2. Materials and Methods
3. Results
3.1. Changes in the Chemical Composition of Slag during Oxygen Blowing
3.2. Changes in the Mineralogical Composition of Slag during Oxygen Blowing
4. Discussion
5. Conclusions
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Sample | Pig Iron (t) | Scrap (t) | Lime (kg) | Dolomitic Lime (kg) | Demetallized Slag (kg) | Magnesite (kg) |
---|---|---|---|---|---|---|
Melt A | 150.1 | 40.0 | 5500 | 2000 | 1 000 | - |
1000 | - | - | - | |||
Melt B | 149.0 | 40.0 | 9000 | 1500 | - | 985 |
1500 | 1000 | - | - | |||
1300 | 3000 | - | 990 | |||
Melt C | 152.9 | 36.0 | 6750 | 1000 | - | - |
4500 | 1000 | - | - | |||
Melt D | 152.5 | 42.0 | 5000 | 2000 | - | - |
3100 | - | - | - | |||
Melt E | 153.0 | 42.0 | 5000 | 1000 | - | - |
3100 | 1000 | - | - |
Sample | Time (min) | Fe(total) (%) | FeO (%) | SiO2 (%) | CaO (%) | MgO (%) | MnO (%) | P2O5 (%) | S (%) | B | CaO (free) (%) |
---|---|---|---|---|---|---|---|---|---|---|---|
A2.5 | 2.5 | 22.00 | 20.80 | 19.06 | 27.06 | 4.43 | 6.49 | 1.47 | 0.04 | 1.42 | 7.42 |
A5 | 5.0 | 23.12 | 23.91 | 15.34 | 35.67 | 4.94 | 6.41 | 1.94 | 0.03 | 2.33 | 4.63 |
A8 | 8.0 | 20.43 | 16.09 | 16.98 | 42.15 | 7.05 | 4.36 | 1.64 | 0.04 | 2.48 | 4.93 |
A11 | 11.0 | 8.60 | 10.92 | 18.36 | 47.95 | 7.46 | 4.10 | 0.98 | 0.03 | 2.61 | 2.97 |
A24 | 24.0 | 12.29 | 10.78 | 13.26 | 49.40 | 6.65 | 3.11 | 0.96 | 0.03 | 3.73 | 1.83 |
A27 | 27.0 | 15.00 | 18.13 | 12.24 | 50.20 | 5.89 | 5.62 | 1.21 | 0.09 | 4.10 | 0.95 |
B2.5 | 2.5 | 23.80 | 25.87 | 19.10 | 33.37 | 4.03 | 7.06 | 1.40 | 0.04 | 1.75 | 8.39 |
B5 | 5.0 | 14.52 | 14.80 | 18.27 | 40.66 | 4.78 | 7.39 | 1.59 | 0.03 | 2.23 | 6.38 |
B8 | 8.0 | 11.28 | 11.77 | 18.53 | 43.82 | 4.85 | 9.39 | 1.34 | 0.04 | 2.36 | 5.45 |
B11 | 11.0 | 14.31 | 14.87 | 10.64 | 55.21 | 5.56 | 4.67 | 1.32 | 0.03 | 5.19 | 6.59 |
B24 | 24.0 | 15.77 | 15.52 | 12.20 | 47.26 | 6.03 | 5.78 | 1.32 | 0.04 | 3.87 | 4.81 |
B27 | 27.0 | 19.06 | 23.15 | 10.06 | 51.76 | 5.08 | 4.24 | 1.04 | 0.13 | 5.15 | 1.77 |
C2.5 | 2.5 | 20.22 | 24.14 | 18.06 | 35.05 | 4.63 | 8.09 | 1.00 | 0.03 | 1.94 | 7.86 |
C5 | 5.0 | 17.10 | 18.68 | 16.25 | 43.52 | 6.65 | 8.00 | 1.30 | 0.03 | 2.68 | 6.22 |
C8 | 8.0 | 6.48 | 8.05 | 15.60 | 57.76 | 5.44 | 4.55 | 1.09 | 0.04 | 3.70 | 5.42 |
C11 | 11.0 | 7.80 | 3.38 | 15.24 | 63.37 | 4.84 | 3.34 | 1.14 | 0.04 | 4.16 | 4.42 |
C24 | 24.0 | 12.71 | 4.31 | 14.16 | 47.53 | 5.44 | 3.86 | 1.00 | 0.08 | 3.36 | 1.84 |
C27 | 27.0 | 15.01 | 15.09 | 11.82 | 50.98 | 5.87 | 4.66 | 1.36 | 0.10 | 4.31 | 0.89 |
D2.5 | 2.5 | 18.54 | 16.09 | 19.30 | 37.11 | 5.44 | 4.71 | 1.12 | 0.00 | 1.92 | 10.97 |
D5 | 5.0 | 15.40 | 15.66 | 16.32 | 44.03 | 8.26 | 3.90 | 0.75 | 0.03 | 2.70 | 9.02 |
D8 | 8.0 | 18.54 | 16.14 | 14.00 | 38.41 | 5.64 | 3.93 | 0.87 | 0.00 | 2.74 | 7.35 |
D11 | 11.0 | 18.38 | 17.04 | 10.76 | 52.99 | 7.86 | 3.66 | 1.19 | 0.08 | 4.92 | 7.80 |
D24 | 24.0 | 18.87 | 20.69 | 9.80 | 50.47 | 7.96 | 3.73 | 1.39 | 0.07 | 5.15 | 2.10 |
D27 | 27.0 | 19.84 | 21.13 | 10.83 | 48.62 | 6.75 | 4.21 | 1.28 | 0.12 | 4.49 | 0.58 |
E2.5 | 2.5 | 27.96 | 27.39 | 18.19 | 33.37 | 4.86 | 3.12 | 0.50 | 0.00 | 1.83 | 8.97 |
E5 | 5.0 | 26.37 | 30.46 | 13.73 | 37.23 | 4.66 | 6.23 | 2.00 | 0.03 | 2.71 | 5.79 |
E8 | 8.0 | 19.10 | 22.80 | 14.97 | 39.54 | 4.86 | 5.77 | 2.01 | 0.03 | 2.64 | 6.30 |
E11 | 11.0 | 14.32 | 10.63 | 12.12 | 48.03 | 4.86 | 2.17 | 0.99 | 0.00 | 3.96 | 6.98 |
E24 | 24.0 | 16.23 | 20.19 | 9.97 | 42.90 | 4.06 | 4.29 | 1.37 | 0.08 | 4.30 | 2.06 |
E27 | 27.0 | 21.44 | 22.13 | 10.24 | 46.55 | 4.34 | 5.79 | 1.28 | 0.12 | 4.55 | 0.72 |
Sample | Time (min) | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Tsteel (°C) | aO (ppm) |
---|---|---|---|---|---|---|---|---|
AM0 pig iron after desulphurization | 4.530 | 0.540 | 0.790 | 0.068 | 0.011 | - | - | |
AM8 | 8 | 2.520 | 0.090 | 0.010 | 0.020 | 0.015 | 1418 | 10.0 |
AM24 | 24 | 0.036 | 0.114 | 0.010 | 0.004 | 0.019 | 1645 | 882.7 |
AM27 | 27 | 0.031 | 0.069 | 0.005 | 0.007 | 0.016 | 1665 | 989.5 |
BM0 pig iron after desulphurization | 4.470 | 0.510 | 0.890 | 0.081 | 0.012 | - | - | |
BM8 | 8 | 2.240 | 0.140 | 0.010 | 0.033 | 0.033 | 1425 | 10.8 |
BM24 | 24 | 0.040 | 0.120 | 0.010 | 0.007 | 0.018 | 1630 | 669.4 |
BM27 | 27 | 0.020 | 0.050 | 0.005 | 0.004 | 0.017 | 1651 | 957.6 |
CM0 pig iron after desulphurization | 4.600 | 0.610 | 0.760 | 0.066 | 0.014 | - | - | |
CM8 | 8 | 2.490 | 0.090 | 0.010 | 0.019 | 0.016 | 1480 | 17.8 |
CM24 | 24 | 0.041 | 0.162 | 0.010 | 0.013 | 0.015 | 1667 | 798.5 |
CM27 | 27 | 0.036 | 0.135 | 0.005 | 0.010 | 0.014 | 1659 | 931.2 |
DM0 pig iron after desulphurization | 4.400 | 0.480 | 0.790 | 0.078 | 0.012 | - | - | |
DM8 | 8 | 2.370 | 0.100 | 0.010 | 0.036 | 0.015 | 1391 | 19.2 |
DM24 | 24 | 0.055 | 0.119 | 0.010 | 0.010 | 0.020 | 1659 | 759.7 |
DM27 | 27 | 0.033 | 0.084 | 0.010 | 0.009 | 0.017 | 1664 | 983.2 |
EM0 pig iron after desulphurization | 4.600 | 0.470 | 0.810 | 0.069 | 0.009 | - | - | |
EM8 | 8 | 2.290 | 0.090 | 0.010 | 0.018 | 0.022 | 1375 | 18.5 |
EM24 | 24 | 0.053 | 0.097 | 0.010 | 0.006 | 0.023 | 1590 | 618.8 |
EM27 | 27 | 0.028 | 0.066 | 0.005 | 0.006 | 0.017 | 1655 | 1191.0 |
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Baricová, D.; Pribulová, A.; Futáš, P.; Buľko, B.; Demeter, P. Change of the Chemical and Mineralogical Composition of the Slag during Oxygen Blowing in the Oxygen Converter Process. Metals 2018, 8, 844. https://0-doi-org.brum.beds.ac.uk/10.3390/met8100844
Baricová D, Pribulová A, Futáš P, Buľko B, Demeter P. Change of the Chemical and Mineralogical Composition of the Slag during Oxygen Blowing in the Oxygen Converter Process. Metals. 2018; 8(10):844. https://0-doi-org.brum.beds.ac.uk/10.3390/met8100844
Chicago/Turabian StyleBaricová, Dana, Alena Pribulová, Peter Futáš, Branislav Buľko, and Peter Demeter. 2018. "Change of the Chemical and Mineralogical Composition of the Slag during Oxygen Blowing in the Oxygen Converter Process" Metals 8, no. 10: 844. https://0-doi-org.brum.beds.ac.uk/10.3390/met8100844