Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter
To characterize the splashing behavior under the impact of the top-blown gas jet in converter, in this paper a physical model is developed with the prototype of a 200 t converter in China. We captured the impact cavity morphology triggered by the top-blown gas jet of the oxygen lance, and found that...
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| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/9/4/409 |
| _version_ | 1819029295998173184 |
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| author | Bo Zhang Kai Chen Ruifang Wang Chengjun Liu Maofa Jiang |
| author_facet | Bo Zhang Kai Chen Ruifang Wang Chengjun Liu Maofa Jiang |
| author_sort | Bo Zhang |
| collection | DOAJ |
| description | To characterize the splashing behavior under the impact of the top-blown gas jet in converter, in this paper a physical model is developed with the prototype of a 200 t converter in China. We captured the impact cavity morphology triggered by the top-blown gas jet of the oxygen lance, and found that the impact cavity shape gradually changed following the sequence of “disc„ → “bowl„ → “cone„ with the increase in the gas flow, leading to the variation of the splashing modes. Moreover, the splashing inside and outside the converter was characterized quantitatively under the different top-blown gas jet conditions. The results showed that the splashing on the furnace inner wall concentrated at the region adjacent to the molten bath surface, implying severe flushing of the furnace lining of this region. The critical gas flow of splashing outside the converter is 32.3 Nm<sup>3</sup>·h<sup>−1</sup>, corresponding to a gas flow of 39,000 Nm<sup>3</sup>·h<sup>−1</sup> in the prototype. In addition, the foaming slag can suppress the splashing during the smelting process. The statistics of the splashing flux provide a reference for maintaining the safety of the workers and the converter equipment. |
| first_indexed | 2024-12-21T06:12:00Z |
| format | Article |
| id | doaj.art-674a279738ba4f1892e571cf5f06060d |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-21T06:12:00Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-674a279738ba4f1892e571cf5f06060d2022-12-21T19:13:30ZengMDPI AGMetals2075-47012019-04-019440910.3390/met9040409met9040409Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a ConverterBo Zhang0Kai Chen1Ruifang Wang2Chengjun Liu3Maofa Jiang4Key Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, ChinaKey Laboratory for Ecological Metallurgy of Multimetallic Ores (Ministry of Education), Northeastern University, Shenyang 110819, ChinaTo characterize the splashing behavior under the impact of the top-blown gas jet in converter, in this paper a physical model is developed with the prototype of a 200 t converter in China. We captured the impact cavity morphology triggered by the top-blown gas jet of the oxygen lance, and found that the impact cavity shape gradually changed following the sequence of “disc„ → “bowl„ → “cone„ with the increase in the gas flow, leading to the variation of the splashing modes. Moreover, the splashing inside and outside the converter was characterized quantitatively under the different top-blown gas jet conditions. The results showed that the splashing on the furnace inner wall concentrated at the region adjacent to the molten bath surface, implying severe flushing of the furnace lining of this region. The critical gas flow of splashing outside the converter is 32.3 Nm<sup>3</sup>·h<sup>−1</sup>, corresponding to a gas flow of 39,000 Nm<sup>3</sup>·h<sup>−1</sup> in the prototype. In addition, the foaming slag can suppress the splashing during the smelting process. The statistics of the splashing flux provide a reference for maintaining the safety of the workers and the converter equipment.https://www.mdpi.com/2075-4701/9/4/409physical modellingsplashingtop-blownoxygen lanceconverter |
| spellingShingle | Bo Zhang Kai Chen Ruifang Wang Chengjun Liu Maofa Jiang Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter Metals physical modelling splashing top-blown oxygen lance converter |
| title | Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter |
| title_full | Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter |
| title_fullStr | Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter |
| title_full_unstemmed | Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter |
| title_short | Physical Modelling of Splashing Triggered by the Gas Jet of an Oxygen Lance in a Converter |
| title_sort | physical modelling of splashing triggered by the gas jet of an oxygen lance in a converter |
| topic | physical modelling splashing top-blown oxygen lance converter |
| url | https://www.mdpi.com/2075-4701/9/4/409 |
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