Particle size reduction by compressibility process of the alumina oxide

Abstract EN

The effect of the compaction applied pressure, compaction velocity and feed particle size on the size reduction of Alumina Oxide by using the compressibility process were investigated.

The apparatus consist of two punches and large die which is a single punch pressing.

The applied pressure varied over the range of (3.1 to 30.3) MPa and the compaction velocity adjusted from (0.5 to 100) cm / min.

Feed sizes used are ; 6000, 5000, 4500, 4000 and 3500 / urn.

The ground alumina oxide was screened by sieves analyses method.

The increases in specific surface area and the percentages of the losses in input energy for each case were evaluated. The results of this investigation indicated that the high size reduction occurred at a slower compaction velocity and a high applied pressure for all fed particle sizes.

These results will help us in the design of mills in order to decreases the losses in input energy for size reduction of solid material.