METHOD FOR MAKING DRYING MORE EFFECTIVE

摘要

A method for suction drying of finely divided materials, in which method a filter cake made of a slurry containing liquid and finely divided solids is formed on a substantially planar surface of a filter medium by suction, the filter cake having an inner surface being in contact with an outer surface of the filter medium. T he method includes placing the outer surface of the filter cake and planar oute r surface of an oscillator in a mechanical contact with each other, so that an acoustic field, having an oscillation frequency is generated throughout the filter cake. The entire outer surface of said oscillator is in substantially continuous contact with said outer surface of said filter cake when said acoustic field is generated, thereby removing residual liquid in the filter cake combined with suction applied to an inner surface of the filter cake.