Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions
The oxidation kinetics of low valence titanium and iron in Ti-bearing blast furnace slag were investigated, the activation energies were calculated, which are 461.1 and 437.3 kJ/mol, respectively. The results illustrate that the oxidation process of Ti3+ in the slag is controlled by chemical reactio...
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MDPI AG
2016-05-01
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| Online Access: | http://www.mdpi.com/2075-4701/6/5/105 |
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| author | Li Zhang Wu Zhang Juhua Zhang Guangqiang Li |
| author_facet | Li Zhang Wu Zhang Juhua Zhang Guangqiang Li |
| author_sort | Li Zhang |
| collection | DOAJ |
| description | The oxidation kinetics of low valence titanium and iron in Ti-bearing blast furnace slag were investigated, the activation energies were calculated, which are 461.1 and 437.3 kJ/mol, respectively. The results illustrate that the oxidation process of Ti3+ in the slag is controlled by chemical reactions. However, the chemical reaction between oxygen and iron, between slag and gas, is the determining step of the iron oxidation process. The effects of the isothermal oxidation on the content of Fe2O3, FeM, FeO, and FeT in the slag are discussed. The Fe2+ and Ti3+ in the molten slag were oxidized at high temperatures. Oxygen affinity of the slag can be described using oxygen capacity. The oxygen capacity of Ti-bearing blast furnace slag was investigated during the dynamic oxidation process, the results indicates that the oxygen capacity of the slag decreased with increasing oxidation time during the dynamic oxidation process. |
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| language | English |
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| spelling | doaj.art-ccc7e4ea2e1b4f5aba3a243b6f25bca02022-12-21T18:20:21ZengMDPI AGMetals2075-47012016-05-016510510.3390/met6050105met6050105Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation ConditionsLi Zhang0Wu Zhang1Juhua Zhang2Guangqiang Li3School of Materials and Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110168, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe oxidation kinetics of low valence titanium and iron in Ti-bearing blast furnace slag were investigated, the activation energies were calculated, which are 461.1 and 437.3 kJ/mol, respectively. The results illustrate that the oxidation process of Ti3+ in the slag is controlled by chemical reactions. However, the chemical reaction between oxygen and iron, between slag and gas, is the determining step of the iron oxidation process. The effects of the isothermal oxidation on the content of Fe2O3, FeM, FeO, and FeT in the slag are discussed. The Fe2+ and Ti3+ in the molten slag were oxidized at high temperatures. Oxygen affinity of the slag can be described using oxygen capacity. The oxygen capacity of Ti-bearing blast furnace slag was investigated during the dynamic oxidation process, the results indicates that the oxygen capacity of the slag decreased with increasing oxidation time during the dynamic oxidation process.http://www.mdpi.com/2075-4701/6/5/105Ti-bearing blast furnace slagdynamic oxidationkineticsoxygen capacity |
| spellingShingle | Li Zhang Wu Zhang Juhua Zhang Guangqiang Li Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions Metals Ti-bearing blast furnace slag dynamic oxidation kinetics oxygen capacity |
| title | Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions |
| title_full | Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions |
| title_fullStr | Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions |
| title_full_unstemmed | Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions |
| title_short | Oxidation Kinetics and Oxygen Capacity of Ti-Bearing Blast Furnace Slag under Dynamic Oxidation Conditions |
| title_sort | oxidation kinetics and oxygen capacity of ti bearing blast furnace slag under dynamic oxidation conditions |
| topic | Ti-bearing blast furnace slag dynamic oxidation kinetics oxygen capacity |
| url | http://www.mdpi.com/2075-4701/6/5/105 |
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