Thermal Conductivities of R<,2>O-CaO-SiO<,2>(R=Li,Na,K) Slag Melts Determined by Hot Wire Method

摘要：

Thermal conductivities of CaO-SiO<,2> slags containing Li<,2>O, Na<,2>O and K<,2>O have been determined using the non-stationary hot wire method over a temperature range from room temperature to 1823K. The temperature rise caused the thermal conductivities for the melts to decrease. The thermal conductivities of slag melts having the same SiO<,2> concentration, i. e., the same NBO/T (number of non- bridging oxygens per tetrahedrally coordinated atom), decreased by replacement of CaO with R<,2>O but took almost the same value at their liquidus temperatures (T<,L>), irrespective of the (％R<,2>O)/(％CaO) ratio, where R represents Li, Na and K. Furthermore, plotting the thermal conductivities against T/T<,L> (temperature normalised by T<,L>) indicates that the thermal conductivities for the melts are not dependent upon the (％R<,2>O)/(％CaO) ratio within experimental scatter as long as the SiO<,2> concentration is kept constant. On the basis of this finding, a prediction equation has been empirically proposed for thermal conductivities of R<,2>O-CaO-SiO <,2> melts.

关键词： thermal conductivity hot wire method metallurgical slag melt, R<,2>O-CaO-SiO<,2>

作者: SUSA Masahiro OZAWA Sumito ENDO Rie

作者单位: Dept of Metallurgy and Ceramics Science, Tokyo Institute of Technology, Meguro-ku, Tokyo, Japan

会议类型: 国际会议

会议名称: 第十一届中日钢铁技术研讨会(11th China-Japan Symposium on Oron and Steel Technology)

会议地点: 武汉

会议语种:英文

页码: 80-87

在线出版日期: 2007-10-29（万方平台首次上网日期，不代表论文的发表时间）