Bieber, JA
1991
Physicochemical Effects Influencing the Measurements of Interfacial Surface Tension of Coal Ashes
Nowok, J.W.; Bieber, J.A.; Benson, S.A. and Jones, M.L.
Fuel, 70:951-956, 1991. Funded by Morgantown Energy Technology Center.
The sessile drop technique has been used to determine the interfacial surface tension of Beulah, Illinois no. 6 and Pittsburgh no. 8 coal ash derived slags under various atmospheres. The physical and chemical effects that influence interfacial surface tension during heating cool slags are discussed. The results indicate that interfacial surface tension measurements obtained below the temperature of critical viscosity (Tcv) were lower than those determined above Tcv. This effect was attributed to a non-equilibrium state of surface tension due to the random distribution of surface active phases in the slag and higher polymerization of silicate structure. The interfacial surface tensions did not vary significantly with temperatures above Tcv.
Bieber, JA
1991
Physicochemical Effects Influencing the Measurements of Interfacial Surface Tension of Coal Ashes
Nowok, J.W.; Bieber, J.A.; Benson, S.A. and Jones, M.L.
Fuel, 70:951-956, 1991. Funded by Morgantown Energy Technology Center.
The sessile drop technique has been used to determine the interfacial surface tension of Beulah, Illinois no. 6 and Pittsburgh no. 8 coal ash derived slags under various atmospheres. The physical and chemical effects that influence interfacial surface tension during heating cool slags are discussed. The results indicate that interfacial surface tension measurements obtained below the temperature of critical viscosity (Tcv) were lower than those determined above Tcv. This effect was attributed to a non-equilibrium state of surface tension due to the random distribution of surface active phases in the slag and higher polymerization of silicate structure. The interfacial surface tensions did not vary significantly with temperatures above Tcv.