Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments
In this paper, the influence of the Fe<sub>2</sub>O<sub>3</sub> addition amount on the dephosphorization of hot metal at 1623 K with the slag of the low basicity (CaO/SiO<sub>2</sub>) of about 1.5 was investigated by using high-temperature laboratorial experiments...
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MDPI AG
2021-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/3/417 |
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| author | Wenkui Yang Jian Yang Yanqiu Shi Zhijun Yang Fubin Gao Runhao Zhang Han Sun |
| author_facet | Wenkui Yang Jian Yang Yanqiu Shi Zhijun Yang Fubin Gao Runhao Zhang Han Sun |
| author_sort | Wenkui Yang |
| collection | DOAJ |
| description | In this paper, the influence of the Fe<sub>2</sub>O<sub>3</sub> addition amount on the dephosphorization of hot metal at 1623 K with the slag of the low basicity (CaO/SiO<sub>2</sub>) of about 1.5 was investigated by using high-temperature laboratorial experiments. With increasing the Fe<sub>2</sub>O<sub>3</sub> addition amount from 5 to 30 g, the contents of [C], [Si], [Mn] and [P] in the hot metal at the end of dephosphorization are decreased and the corresponding removal ratios increase. In dephosphorization slags, the phosphorus mainly exists in the form of the nCa<sub>2</sub>SiO<sub>4</sub>–Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> solid solution in the phosphorus-rich phase and the value of coefficient n decreases from 20 to 1. Furthermore, the oxygen potential and activity at the interface between the slag and hot metal are increased. When the oxygen potential and the oxygen activity at the interface are greater than 0.72 × 10<sup>−12</sup> and 7.1 × 10<sup>−3</sup>, respectively, the dephosphorization ratio begins to increase rapidly. When the Fe<sub>2</sub>O<sub>3</sub> addition amount is increased to 30 g, the ratio of the Fe<sub>2</sub>O<sub>3</sub> addition amount to theoretical calculation consumption is around 175%, and the dephosphorization ratio reaches the highest value of 83.3%. |
| first_indexed | 2024-03-09T05:38:59Z |
| format | Article |
| id | doaj.art-67675520d2264e1cbb56acc4031dbeae |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T05:38:59Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-67675520d2264e1cbb56acc4031dbeae2023-12-03T12:26:26ZengMDPI AGMetals2075-47012021-03-0111341710.3390/met11030417Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial ExperimentsWenkui Yang0Jian Yang1Yanqiu Shi2Zhijun Yang3Fubin Gao4Runhao Zhang5Han Sun6State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaHBIS Handan Iron and Steel Group Co., LTD, Handan City, Hebei 056015, ChinaHBIS Handan Iron and Steel Group Co., LTD, Handan City, Hebei 056015, ChinaHBIS Handan Iron and Steel Group Co., LTD, Handan City, Hebei 056015, ChinaState Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaIn this paper, the influence of the Fe<sub>2</sub>O<sub>3</sub> addition amount on the dephosphorization of hot metal at 1623 K with the slag of the low basicity (CaO/SiO<sub>2</sub>) of about 1.5 was investigated by using high-temperature laboratorial experiments. With increasing the Fe<sub>2</sub>O<sub>3</sub> addition amount from 5 to 30 g, the contents of [C], [Si], [Mn] and [P] in the hot metal at the end of dephosphorization are decreased and the corresponding removal ratios increase. In dephosphorization slags, the phosphorus mainly exists in the form of the nCa<sub>2</sub>SiO<sub>4</sub>–Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> solid solution in the phosphorus-rich phase and the value of coefficient n decreases from 20 to 1. Furthermore, the oxygen potential and activity at the interface between the slag and hot metal are increased. When the oxygen potential and the oxygen activity at the interface are greater than 0.72 × 10<sup>−12</sup> and 7.1 × 10<sup>−3</sup>, respectively, the dephosphorization ratio begins to increase rapidly. When the Fe<sub>2</sub>O<sub>3</sub> addition amount is increased to 30 g, the ratio of the Fe<sub>2</sub>O<sub>3</sub> addition amount to theoretical calculation consumption is around 175%, and the dephosphorization ratio reaches the highest value of 83.3%.https://www.mdpi.com/2075-4701/11/3/417dephosphorizationdistribution ratio of phosphoruslow temperaturelow basicityFe<sub>2</sub>O<sub>3</sub> addition amounthot metal |
| spellingShingle | Wenkui Yang Jian Yang Yanqiu Shi Zhijun Yang Fubin Gao Runhao Zhang Han Sun Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments Metals dephosphorization distribution ratio of phosphorus low temperature low basicity Fe<sub>2</sub>O<sub>3</sub> addition amount hot metal |
| title | Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments |
| title_full | Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments |
| title_fullStr | Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments |
| title_full_unstemmed | Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments |
| title_short | Effect of the Fe<sub>2</sub>O<sub>3</sub> Addition Amount on Dephosphorization of Hot Metal with Low Basicity Slag by High-Temperature Laboratorial Experiments |
| title_sort | effect of the fe sub 2 sub o sub 3 sub addition amount on dephosphorization of hot metal with low basicity slag by high temperature laboratorial experiments |
| topic | dephosphorization distribution ratio of phosphorus low temperature low basicity Fe<sub>2</sub>O<sub>3</sub> addition amount hot metal |
| url | https://www.mdpi.com/2075-4701/11/3/417 |
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