Behavior of Metal Droplets in Slags during Desulphurization of Hot Metal
An intensive desulphurization of hot metal can result in significant additional losses of iron in the slag.These iron losses during desulphurization of hot metal can reach a value of 1.5%-2.5%of the total amount of processed hot metal.The majority of the iron losses are present in the slag in form of different iron droplets.Therefore,the knowledge of the formation and behavior of these droplets in slags can help to significantly decrease the iron losses during desulphurization of hot metal.The characteristics of different iron droplets such as the morphology,number,size,composition and solidification structure were investigated in industrial slag samples taken from a ladle after desulphurization of hot metal.It was found that different morphologies of iron droplets in slag depend on the mechanism for the dispersion of the hot metal droplets into the slag,the characteristics of slag(amount,viscosity,melting temperature,etc.)as well as some technological parameters(mode and intensity of injection of reagents for desulphurization,stirring rate of hot metal in the ladle,etc.).The main mechanisms for involving of different metal droplets into the slag and their behavior during desulphurization process are discussed based on the obtained characteristics of the metal droplets.
hot metal desulphurization iron losses metal droplets slag
Annika Fang YANG Andrey KARASEV P(a)r G(o)ran J(O)NSSON
KTH Royal Institute of Technology,SE-10044 Stockholm,Sweden
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
80-83
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）