The factors affecting the thermophysical properties of slags and glasses
In this work the various factors affecting the thermo-physical properties of slags and glasses are investigated. The effects of (i) the structure of the slag, (ii) individual cations and (iii) temperature on various physical properties are explored. The parameter Q (=4-NBO/T), which is a measure of the polymerisation of the melt, was used as a measure of the structure. The various ways in which cations affect various properties are listed. This study found the following: Liquidus temperature of slags decreased with decreasing strength of the M-O bond. Thermal expansion coefficients increased with decreasing Q and decreasing M-O bond strength. Viscosities increased with increasing Q, increasing cation size and with bridging due to the linking of chains by di-valent cations. Electrical resistivities increased with increasing Q, decreasing number of available cations and increasing cation size. The magnitude of thermal conductivity of solid and supercooled slags was determined by the rigidity of the silicate matrix and this decreased with decreasing Q, decreasing M-O bond strength and increasing temperature above the softening temperature. Surface tensions decreased with increasing Q and decreasing M-O bond strength.
Properties Slags Polymerisation Cation effects Temperature
Kenneth C. MILLS Lang.YUAN Zushu Li Kuo-Chih CHOU Guohua Zhang
Department of Materials, Imperial College, London, SW7 2AZ TataSteel Technology Centre, Rotherham Metallurgical and Ecological Engineering School, University of Science and Technology, Beijing 10008
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
1-21
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）