CaO-FeO-Al2O3-SiO2渣熔化溫度特性實驗研究

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CaO-FeO-Al₂O₃-SiO₂渣熔化溫度特性實驗研究

1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Central Research Institute of Building and Construction, MCC Group, Co., Ltd., Beijing 100088, China;
3. Tangshan Iron and Steel Group Co. Ltd., Tangshan 063016, China

摘要: 采用FactSage理論計算以及熔點實驗對CaO-FeO-Al₂O₃-SiO₂無氟的環保型鐵水預處理脫磷渣系的熔化溫度特性進行了系統研究，考察了爐渣堿度、Al₂O₃和FeO質量分數三個因素渣系熔化溫度特性的影響.研究結果表明：FeO的質量分數對渣系熔點的影響最大；爐渣的最佳配比為堿度5.5，Al₂O₃質量分數10%，FeO質量分數45%，該配比下爐渣熔化特性在本實驗條件下能夠滿足鐵水預處理用渣的熔化溫度特性的要求.
- 煉鐵 /
- 脫磷 /
- 渣 /
- 熔點
Abstract: Theoretical calculations by FactSage software and melting experiments were performed to systematically study the melting temperature characteristic of a CaO-FeO-Al₂O₃-SiO₂ fluoride-free slag system used for hot metal dephosphorization pretreatment. Three influence factors of the melting temperature of the slag were researched which were the slag's binary basicity, the mass fractions of Al₂O₃ and FeO. The results show that the mass fraction of FeO has the greatest impact on the melting temperature of the slag among three factors. The obtained best proportion of the slag is the binary basicity of 5.5, 10% Al₂O₃ and 45% FeO. Under the experimental conditions, the melting temperature characteristic of the optimal slag can meet requirements for hot metal dephosphorization pretreatment.
- ironmaking /
- dephosphorization /
- slags /
- melting point