Research Article
Adoption of Sinter Addition in Steelmaking Converter to Control Spitting
Table 1
Comparison of BOF operating data.
| | BOF operating parameters | Without sinter addition | With sinter addition |
| | Hot metal charge, kg/ton of crude steel (tcs) | 1076.9 | 1090.8 | | Scrap charge, kg/tcs | 110.8 | 88.5 | | Cal. lime, kg/tcs | 63.7 | 64.5 | | Cal. dolo., kg/tcs | 15.4 | 13.7 | | Oxygen consumption, Nm3/tcs | 53.3 (49.2–55.4) | 55.0 (49.2–61.5) | | Opening temp., °C | 1626 (1601–1655) | 1621 (1600–1681) |
| | Converter steel analysis | | C, % | 0.04 (0.03–0.07) | 0.04 (0.03–0.07) | | Mn, % | 0.021 (0.02–0.03) | 0.02 (0.01–0.03) | | P, % | 0.02 (0.014–0.028) | 0.019 (0.012–0.032) | | S, % | 0.057 (0.044–0.08) | 0.053 (0.042–0.076) |
| | Slag composition | | FeO, % | 28.6 (27.5–29.3) | 27.01 (25.6–29.33) | | SiO2, % | 10.31 (9.86–10.6) | 10.28 (9.58–11.62) | | CaO, % | 46.76 (44.34–48.5) | 47.02 (45.6–48.76) | | MgO, % | 3.91 (2.51–5.71) | 3.62 (2.33–4.2) | | Al2O3, % | 0.7 (0.4–1.1) | 0.49 (0.35–0.62) | | TiO2, % | 0.69 (0.56–0.85) | 0.77 (0.6–0.9) | | P2O5, % | 2.41 (2.13–2.6) | 2.38 (2–2.48) | | S, % | 0.17 (0.11–0.23) | 0.17 (0.15–0.18) |
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