饱和氧化镁熔渣发泡行为的试验研究  

Experimental Study on Foaming Behavior of Saturated Magnesium Oxide Slag

作　　者：何佳 Alberto N.Conejo HE Jia;Alberto N.Conejo(School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing100083,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《中国资源综合利用》2025年第3期9-15,共7页China Resources Comprehensive Utilization

基　　金：北京市自然科学基金外籍学者项目(IS23038)。

摘　　要：熔渣泡沫化在电弧炉炼钢生产过程中具有实现高效低耗冶炼的重要意义。采用高温模拟试验,对不同成分下的电弧炉饱和氧化镁熔渣在脱碳反应条件下的发泡高度进行研究。试验结果表明,在脱碳反应的条件下,随着反应时间的延长,熔渣的发泡高度先升高后降低,熔渣发泡高度在反应时间为300~600 s时达到最大。熔渣发泡高度随FeO含量的变化主要体现为FeO含量升高导致熔渣黏度降低,FeO含量低于30%时,熔渣发泡高度随FeO含量升高而升高,FeO含量高于30%时,熔渣泡沫高度随FeO含量的变化没有明显规律。随着熔渣碱度升高,熔渣发泡高度先升高后降低。FeO含量为30%,碱度为1.9时,熔渣发泡高度达到最大,最大发泡高度为17.6 mm。研究结果将为推进电弧炉泡沫渣工艺研究提供重要支撑。Slag foam is of great significance to realize high efficiency and low consumption smelting in the process of electric arc furnace steelmaking.Using high-temperature simulation experiments,the foaming height of saturated magnesium oxide slag in electric arc furnaces with different compositions under decarbonization reaction conditions is studied.The experimental results show that under the conditions of decarbonization reaction,with the extension of reaction time,the foaming height of slag first increases and then decreases,and the foaming height of slag reaches its maximum at a reaction time of 300~600 s.The variation of slag foaming height with FeO content is mainly reflected in the decrease of slag viscosity caused by the increase of FeO content,when the FeO content is less than 30%,the height of slag foaming increases with the increase of FeO content,when FeO content is higher than 30%,the change of slag foam height with FeO content is not obvious.As the alkalinity of the slag increases,the foaming height of the slag first increases and then decreases.When the FeO content is 30% and the alkalinity is 1.9,the maximum foaming height of the slag reaches 17.6 mm.The research results will provide important support for promoting the research of foam slag technology of electric arc furnace.

关 键 词：熔渣 发泡高度 脱碳反应 FEO含量 碱度 

分 类 号：TF741.5[冶金工程—钢铁冶金]