Analysis of tecniques for measurement of the size distribution of solid particles

• Main Authors: F. O. Arouca, M. A. S. Barrozo, J. J. R. Damasceno
• Format: Article
• Language: English
• Published: Brazilian Society of Chemical Engineering 2005-03-01
• Series: Brazilian Journal of Chemical Engineering
• Subjects: Gamma-ray attenuation technique; Size distribution of diameters
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322005000100014

Determination of the size distribution of solid particles is fundamental for analysis of the performance several pieces of equipment used for solid-fluid separation. The main objective of this work is to compare the results obtained with two traditional methods for determination of the size grade distribution of powdery solids: the gamma-ray attenuation technique (GRAT) and the LADEQ test tube technique. The effect of draining the suspension in the two techniques used was also analyzed. The GRAT can supply the particle size distribution of solids through the monitoring of solid concentration in experiments on batch settling of diluted suspensions. The results show that use of the peristaltic pump in the GRAT and the LADEQ methods produced a significant difference between the values obtained for the parameters of the particle size model.