SOCRATCES - Deliverable D3.5 - Report on the attrtion and comminution of limestone

This document is the deliverable of the task 3.5 (Particle agglomeration analysis) included in WP3 (solar calcination). The document is a report on the work carried out to study the effect of high intensity acoustic fields on the agglomeration of fine CaO/CaCO3 particles (<150?m). The research activity has been developed in different stages. In the first one, the different samples of limestones and dolomites, distributed by CSIC to the other partners of the project, have been characterized by particle size distribution (PSD) and scanning electron microscopy (SEM). Based on this preliminary characterization, the sample having the smallest particle size has been selected as sorbent to be used in the next steps in order to study the effect of the sound on the agglomeration phenomena in the worst-case scenario. In particular, fluidization tests have been performed under both ordinary and sound-assisted conditions in order to characterize the samples from the fluid-dynamic point of view. Finally, carbonation/calcination experiments have been carried out at CSP-CaL conditions under both ordinary and sound-assisted condition in order to highlight the effect of the sound on the agglomeration phenomena.