Density of molten CaO-MnO-SiO2 slag
Archimedean method is a general method to measure molten slag density. For accurate measurements, the information of thermal expansion of the sinker is essential. In the previous studies, a linear thermal expansion of the sinker had been simply assumed, which might give us wrong information of slag density at high temperatures. In the present study, the thermal expansion of a Pt-10 pct Rh sinker was directly investigated by investigating the volume as a function of temperature, and a non-linear thermal expansion relation was obtained. This information was used to determine the molten slag density. CaO-MnO-SiO2 slag system was chosen for this study. The slag densities obtained in the present study were lower than the reported values. The density decreased with increasing temperature, and the temperature coefficient was in the range of - 3.10 ~ - 7.65x10-4 g/cm3K. At a fixed CaO content (25 wt％) and at a fixed SiO2 content (30 wt％), the slag density increased with increasing MnO content.
Archimedean method CaO-MnO-SiO2 slag Density Molar volume Thermal expansion
Joonho LEE Le Thu HOAI Joongkil CHOE Joo-Hyun PARK
Department of Material Science and Engineering, Korea University, Seoul, 136-713, Korea School of Materials Science and Engineering, University of Ulsan, Ulsan 680-749, Korea
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-8
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）