Martin I. Blake

Particle Aggregation States and Aerosol Clogging

AbstractThe clogging tendencies of different concentrations of sulfamerazine suspensions composed of suspended particles in the dispersed, coagulated, and flocculated states were studied. The dispersed suspension system showed clogging at the 10 to 15 percent solids level, while the coagulated system clogged between 5 and 10 percent, and the flocculated system clogged between the 20 and 25 percent sulfamerazine concentration. The greater the extent of coagulation of the solid particles, the lower the concentration at which clogging occurs. In the flocculated system, the particles are loosely packed in a network-meshed structure and a cake does not form. The propellant systems used were selected for their value in this theoretical study.