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| Study of Dephosphorization of High-Phosphorus Hot Metal in CaO-SiO2-FeO-Na2O-Al2O3 Slag System |
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Received:October 15, 2013
Revised:October 22, 2013
Accepted:October 28, 2013
Published Online:April 20, 2015
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| DOI： |
| KeyWord:high-phosphorus hot metal; pretreatment of hot metal; calcium base dephosphorizing flux; dephosphorization |
| Author | Institution |
| Xuan Xinyu |
Faculty of Metallurgical and Energy Engineering of Kunming University of Science and Technology |
| Shi Zhe |
Faculty of Metallurgical and Energy Engineering of Kunming University of Science and Technology |
| Qi Xin |
Faculty of Metallurgical and Energy Engineering of Kunming University of Science and Technology |
| Cai Jiawu |
Faculty of Metallurgical and Energy Engineering of Kunming University of Science and Technology |
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| Abstract: |
| According to the actual situation of the high-phosphorus iron ore, the present paper studies the dephosphorization of high-phosphorus hot metal by using CaO-SiO2-FeO-Na2O-Al2O3 slag system. The results show that，under the same experimental conditions, when basicity of ω(CaO)/ω(SiO2) was 4, the effects of dephosphorization using Al2O3、Na2O and the mixture of Al2O3 and Na2O were better than that of using CaF2.The effects of dephosphorization with twice-joining slags were better than the effects of once-joining. When the composite flux with4% (Al2O3) and 2% (Na2O) was used, and was added twice, the dephosphorization rate reached 96%. |
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