| CaO-SiO_2-FeO-P_2O_5渣系脱磷影响因素的研究 |
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| 引用本文： | 袁林华,苏 畅,吕宁宁.CaO-SiO_2-FeO-P_2O_5渣系脱磷影响因素的研究[J].山东冶金,2014(1):38-41. |
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| 作者姓名： | 袁林华 苏 畅 吕宁宁 |
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| 作者单位： | [1]沈阳东大冶金科技股份有限公司,辽宁沈阳110819 [2]东北大学材料与冶金学院,辽宁沈阳110819 |
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| 摘 要： | 为了提高转炉渣中CaO的利用率,降低转炉渣的碱度,通过试验研究了CaO粒度、粒状CaO的加入比例、温度和保温时间对含磷富集相的影响。结果表明,适当增大CaO的粒度有利于2CaO·SiO2-3CaO·P2O5固溶体的形成;当渣中粒状CaO的含量较低时,增加粒状CaO的加入比例,可促进渣中大颗粒固溶体的形成并减少渣中磷的含量,但当粒状CaO的含量较高时,2CaO·SiO2-3CaO·P2O5固溶体生成量减少;适当提高温度有利于脱磷反应的进行;随反应时间的延长,2CaO·SiO2-3CaO·P2O5固溶体的粒径增大,而且固溶体中磷的含量也不断增加。
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| 关 键 词： | CaO-SiO2-FeO-P2O5渣系 CaO粒度 温度 保温时间 磷富集相 |
Research on the Influence Factors of Dephosphorization in CaO-SiO2-FeO-P2O5Slag |
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| Affiliation: | YUAN Linhua, SU Chang, L Ningning ( 1 Northeastern University Metallurgical Technology Institute Company Limited, Shenyang 110819, China; 2 School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China) |
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| Abstract: | For improving the efficiency of CaO and decreasing the basicity of converter, the effects of CaO particles, holding time and temperature on the formation of phosphor enrichment phase were investigated in this paper. The results showed that increasing the particle size of CaO properly was beneficial to the formation of 2CaO·SiO2-3CaO·P2O5 solid solution. When the granular CaO is low in slag, increasing the proportion of granular, CaO could promote the formation of 2CaO·SiO2-3CaO·P2O5 solid solution, but the 2CaO·SiO2-3CaO·P2O5 solid solution decreased when the granular CaO is high in slag. Increasing the temperature properly was beneficial to the dephosphorization reaction. Prolonging the reaction time could enlarge the size of 2CaO·SiO2-3CaO·P2O5 solid solution and improve the content of phosphorus in 2CaO·SiO2-3CaO·P2O5 solid solution. |
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| Keywords: | CaO-SiO2-FeO-P2O5 slag CaO particle sizes temperature holding time phosphor enrichment phase |
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