CHARACTERIZATION OF METAL KINGS IN SLAG AFTER DESULFURIZATION CAST IRON ACCORDING TO THE REAGENT CO-INJECTION SCHEME
| Autor: | E. M. Sigarev, A. A. Pohvalitiy, A. V. Dovzhenko, E. A. Chubina |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Collection of scholarly papers of Dniprovsk State Technical University (Technical Sciences). 2:10-16 |
| ISSN: | 2617-8389 2519-2884 |
| DOI: | 10.31319/2519-2884.35.2019.36 |
| Popis: | The results a study of the distribution by fractions and composition of metal drops removed from the cover slag formed along the ladle desulfurization of hot metal according to the reagent co-injection scheme in the conditions of the converter shop of Dneprovsky Metallurgical Plant PJSC are presented. It is proposed to classify metal drops according to size and shape by groups «A», «B» and «C». Drops are assigned to group «A», mostly of irregular shape, which are formed mainly due to bursts of metal in the zone of the «eye» on the surface of the metal bath and are larger than10 mm; to group «B» – drops of spherical shape with a size of 2.5 ...10 mmand to group «C» – drops of both spherical and irregular shape with a size of less than2.5 mm, respectively. A characteristic size distribution of drops was established, which, for the conditions of co-injection lime and magnesium, amounted to: 0.5 ...2.5 mm– 10 ... 16%; 6 ...8 mm– 10 ... 20%; >10 mm– 30 ... 45%, respectively. It was found that with a decrease in the diameter of the drops from2.5 mmor less, there is a trend towards an increase in the sulfur content in the latter, and the sulfur content in the fraction |
| Databáze: | OpenAIRE |
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