Sorne Properties of Aerated Powders

CIM Bulletin, 1970

G. A. TURNER, Professor of Chemical Engineering, University of Waterloo. S. P. CHONG, formerly at the University of Waterloo, now with the Iron Ore Company of Canada, Schefferville, Que. N. C. SHIH, formerly at the University of Waterloo, now at the University of Rochester, Rochester, N.Y.

Fine powders, with the bulk of the particle diameters Jess than 10 microns, were aerated so that each particle was, on the average, separated from its neighbours by 1.3 to 2 mean diameters. In this state, measurements were made of the viscosity and settling rate of the powder, and the interfacial tension between it and a moist pellet. From the viscosity measurements, qualitative analogies are drawn between the behaviour of the aerated powder and that of a dense gas near its critical point.
Keywords: Air, Behaviours, Clay, Density, interfacial tension, Iron Ore Company of Canada, Magnetite D. . . ., University of Waterloo, viscosity, particles, Pressure, Temperature, Tension, Value, viscosity