SEGREGATION PHENOMENA IN A SHAKER

The segregation phenomena of different binary mixtures were studied ex perimentally in a vertical shaker. The larger particles tend to move u pwards in the shaker in a certain range of vibrational accelerations. The segregation effect was more significant for the mixture with a lar ger size difference. The segregation coefficient was measured and foun d to increase with vibrational acceleration until reaching a maximum a nd then to decrease with acceleration. The bed expansion height was al so measured. It was found that the greatest; segregation effect occurr ed when the bed transformed from a dense state to a loose state.