Slag Characterization: Viscosity of Synthetic Coal Slag in Steam

摘要

A rotating cylinder apparatus has been designed and constructed for measuring the viscosity of molten slags under steam pressure in the range of 15 to about 300 psi and up to about 1400C. Two synthetic coal slags, one high in alkali, and the other lower in alkali but higher in calcia were studied with this apparatus. In the high alkali slag equilibrium was probably not achieved and the viscosity appeared to increase with time. In the low alkali slag although the viscosity appeared to be increased with increasing steam pressure the ambient and higher pressure curves appear to tend to coalesce with increasing temperature.